Android图片加载神器之Fresco-加载图片基础[详细图解Fresco的使用]
2024-05-03 21:56:45
前半部分找不到原文链接了
后半部分原文链接：http://www.jianshu.com/p/5364957dcf49
著作权归作者所有，转载请联系作者获得授权，并标注“简书作者”。
Fresco简单的使用—SimpleDraweeView
百学须先立志—学前须知：
尽信书，不如无书—能学到什么？
1、SimpleDraweeView最基本的使用
2、SimpleDraweeView的圆形图
3、SimpleDraweeView的圆角图
4、SimpleDraweeView的缩放类型工欲善其事必先利其器—下载Fresco并导入到项目
Fresco中文说明：http://www.fresco-cn.org/
Fresco项目GitHub地址：https://github.com/facebook/fresco
<code class="hljs xml has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;"><!-- 访问网络的权限 --></span> <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">uses-permission</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:name</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"android.permission.INTERNET"</span>/></span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li></ul><div class="save_code tracking-ad" data-mod="popu_249"><a target=_blank target="_blank"><img src="http://static.blog.csdn.net/images/save_snippets.png" alt="" /></a></div>
常见问题：
初次使用，我们就先简单书写我们的 activity_main.xml ：
<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><RelativeLayout xmlns:android=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res/android"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>><<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>android:id=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@+id/main_adv"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"300dp"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"300dp"</span>android:layout_centerInParent=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>></<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>></RelativeLayout></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li></ul><div class="save_code tracking-ad" data-mod="popu_249"><a target=_blank target="_blank"><img src="http://static.blog.csdn.net/images/save_snippets.png" alt="" /></a></div>
<code class="hljs java has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-class" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">class</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">MainActivity</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">extends</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">AppCompatActivity</span> {</span><span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@Override</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">protected</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">onCreate</span>(Bundle savedInstanceState) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">super</span>.onCreate(savedInstanceState);setContentView(R.layout.activity_main);} }</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li></ul><div class="save_code tracking-ad" data-mod="popu_249"><a target=_blank target="_blank"><img src="http://static.blog.csdn.net/images/save_snippets.png" alt="" /></a></div>
<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"> java<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.lang</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.RuntimeException</span>: Unable to start activity ComponentInfo{scp<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.frescodemo</span>/scp<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.frescodemo</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.MainActivity</span>}: <span class="hljs-label" style="box-sizing: border-box;">android.view.InflateException:</span> Binary XML file line <span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">#5: Error inflating class com.facebook.drawee.view.SimpleDraweeView</span>at android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.app</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ActivityThread</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.performLaunchActivity</span>(ActivityThread<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2264</span>)at android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.app</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ActivityThread</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.handleLaunchActivity</span>(ActivityThread<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2313</span>)at android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.app</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ActivityThread</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.access</span>$1100(ActivityThread<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">141</span>)at android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.app</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ActivityThread</span>$H<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.handleMessage</span>(ActivityThread<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1238</span>)at android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.os</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Handler</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.dispatchMessage</span>(Handler<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">102</span>)at android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.os</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Looper</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.loop</span>(Looper<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">136</span>)at android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.app</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ActivityThread</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.main</span>(ActivityThread<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5336</span>)at java<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.lang</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.reflect</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Method</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.invokeNative</span>(Native Method)at java<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.lang</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.reflect</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Method</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.invoke</span>(Method<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">515</span>)at <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.android</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.internal</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.os</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ZygoteInit</span>$MethodAndArgsCaller<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.run</span>(ZygoteInit<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">871</span>)at <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.android</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.internal</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.os</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ZygoteInit</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.main</span>(ZygoteInit<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">687</span>)at dalvik<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.system</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.NativeStart</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.main</span>(Native Method)Caused by: android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.InflateException</span>: Binary XML file line <span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">#5: Error inflating class com.facebook.drawee.view.SimpleDraweeView</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li></ul><div class="save_code tracking-ad" data-mod="popu_249"><a target=_blank target="_blank"><img src="http://static.blog.csdn.net/images/save_snippets.png" alt="" /></a></div>
运行报错了！怎么回事呢？这里啊，是因为我们没有在应用调用 setContentView() 之前进行初始化Fresco造成的；解决办法：
<code class="hljs java has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-class" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">class</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">MainActivity</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">extends</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">AppCompatActivity</span> {</span><span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@Override</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">protected</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">onCreate</span>(Bundle savedInstanceState) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">super</span>.onCreate(savedInstanceState);Fresco.initialize(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">this</span>);setContentView(R.layout.activity_main);} }</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li></ul><div class="save_code tracking-ad" data-mod="popu_249"><a target=_blank target="_blank"><img src="http://static.blog.csdn.net/images/save_snippets.png" alt="" /></a></div>
占位图—placeholderImage：
在此之前我们需要一张占位图 icon_placeholder.png 大家右键另存为即可：
<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><RelativeLayout xmlns:android=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res/android"</span>xmlns:fresco=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res-auto"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>><<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>android:id=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@+id/main_adv"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_centerInParent=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>fresco:placeholderImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_placeholder"</span>fresco:placeholderImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"fitCenter"</span>></<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>></RelativeLayout></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li></ul><div class="save_code tracking-ad" data-mod="popu_249"><a target=_blank target="_blank"><img src="http://static.blog.csdn.net/images/save_snippets.png" alt="" /></a></div>
正在加载图—progressBarImage：
在此之前我们需要一张正在加载图 icon_progress_bar.png 大家右键另存为即可：
<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><RelativeLayout xmlns:android=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res/android"</span>xmlns:fresco=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res-auto"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>><<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>android:id=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@+id/main_sdv"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_centerInParent=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>fresco:actualImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"focusCrop"</span>fresco:placeholderImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_placeholder"</span>fresco:placeholderImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"fitCenter"</span>fresco:progressBarImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_progress_bar"</span>fresco:progressBarImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"centerInside"</span>fresco:progressBarAutoRotateInterval=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"5000"</span>></<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>></RelativeLayout></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li></ul><div class="save_code tracking-ad" data-mod="popu_249"><a target=_blank target="_blank"><img src="http://static.blog.csdn.net/images/save_snippets.png" alt="" /></a></div>
<code class="hljs java has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-class" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">class</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">MainActivity</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">extends</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">AppCompatActivity</span> {</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> SimpleDraweeView simpleDraweeView;<span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@Override</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">protected</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">onCreate</span>(Bundle savedInstanceState) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">super</span>.onCreate(savedInstanceState);Fresco.initialize(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">this</span>);setContentView(R.layout.activity_main);initView();}<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">initView</span>() {<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//创建SimpleDraweeView对象</span>simpleDraweeView = (SimpleDraweeView) findViewById(R.id.main_sdv);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//创建将要下载的图片的URI</span>Uri imageUri = Uri.parse(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"https://img-my.csdn.net/uploads/avatar/4/E/8/1_y1scp.jpg"</span>);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//开始下载</span>simpleDraweeView.setImageURI(imageUri);} }</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li></ul><div class="save_code tracking-ad" data-mod="popu_249"><a target=_blank target="_blank"><img src="http://static.blog.csdn.net/images/save_snippets.png" alt="" /></a></div>
失败图—failureImage：
在此之前我们需要一张正在加载图 icon_failure.png 大家右键另存为即可：
<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><RelativeLayout xmlns:android=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res/android"</span>xmlns:fresco=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res-auto"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>><<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>android:id=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@+id/main_sdv"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_centerInParent=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>fresco:actualImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"focusCrop"</span>fresco:placeholderImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_placeholder"</span>fresco:placeholderImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"fitCenter"</span>fresco:progressBarImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_progress_bar"</span>fresco:progressBarImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"centerInside"</span>fresco:progressBarAutoRotateInterval=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"5000"</span>fresco:failureImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_failure"</span>fresco:failureImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"centerInside"</span>></<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>></RelativeLayout></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li></ul><div class="save_code tracking-ad" data-mod="popu_249"><a target=_blank target="_blank"><img src="http://static.blog.csdn.net/images/save_snippets.png" alt="" /></a></div>
<code class="hljs java has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-class" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">class</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">MainActivity</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">extends</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">AppCompatActivity</span> {</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> SimpleDraweeView simpleDraweeView;<span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@Override</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">protected</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">onCreate</span>(Bundle savedInstanceState) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">super</span>.onCreate(savedInstanceState);Fresco.initialize(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">this</span>);setContentView(R.layout.activity_main);initView();}<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">initView</span>() {<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//创建SimpleDraweeView对象</span>simpleDraweeView = (SimpleDraweeView) findViewById(R.id.main_sdv);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//创建将要下载的图片的URI</span>Uri imageUri = Uri.parse(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"https://img-my.csdn.net/uploads/avatar_y1scp.jpg"</span>);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//开始下载</span>simpleDraweeView.setImageURI(imageUri);} }</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li></ul><div class="save_code tracking-ad" data-mod="popu_249"><a target=_blank target="_blank"><img src="http://static.blog.csdn.net/images/save_snippets.png" alt="" /></a></div>
重试图—retryImage：
在此之前我们需要一张正在加载图 icon_retry.png 大家右键另存为即可：
<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><RelativeLayout xmlns:android=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res/android"</span>xmlns:fresco=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res-auto"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>><<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>android:id=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@+id/main_sdv"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_centerInParent=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>fresco:actualImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"focusCrop"</span>fresco:placeholderImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_placeholder"</span>fresco:placeholderImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"fitCenter"</span>fresco:progressBarImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_progress_bar"</span>fresco:progressBarImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"centerInside"</span>fresco:progressBarAutoRotateInterval=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"5000"</span>fresco:failureImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_failure"</span>fresco:failureImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"centerInside"</span>fresco:retryImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_retry"</span>fresco:retryImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"centerCrop"</span>></<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>></RelativeLayout></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li></ul><div class="save_code tracking-ad" data-mod="popu_249"><a target=_blank target="_blank"><img src="http://static.blog.csdn.net/images/save_snippets.png" alt="" /></a></div>
<code class="hljs java has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-class" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">class</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">MainActivity</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">extends</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">AppCompatActivity</span> {</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> SimpleDraweeView simpleDraweeView;<span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@Override</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">protected</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">onCreate</span>(Bundle savedInstanceState) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">super</span>.onCreate(savedInstanceState);Fresco.initialize(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">this</span>);setContentView(R.layout.activity_main);initView();}<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">initView</span>() {<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//创建SimpleDraweeView对象</span>simpleDraweeView = (SimpleDraweeView) findViewById(R.id.main_sdv);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//创建将要下载的图片的URI</span>Uri imageUri = Uri.parse(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"https://img-my.csdn.net/uploads/avatar_y1scp.jpg"</span>);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//开始下载</span>simpleDraweeView.setImageURI(imageUri);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//创建DraweeController</span>DraweeController controller = Fresco.newDraweeControllerBuilder()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//加载的图片URI地址</span>.setUri(imageUri)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//设置点击重试是否开启</span>.setTapToRetryEnabled(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//设置旧的Controller</span>.setOldController(simpleDraweeView.getController())<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//构建</span>.build();<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//设置DraweeController</span>simpleDraweeView.setController(controller);} }</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li></ul><div class="save_code tracking-ad" data-mod="popu_249"><a target=_blank target="_blank"><img src="http://static.blog.csdn.net/images/save_snippets.png" alt="" /></a></div>
淡入淡出动画—fadeDuration：
<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><RelativeLayout xmlns:android=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res/android"</span>xmlns:fresco=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res-auto"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>><<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>android:id=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@+id/main_sdv"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_centerInParent=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>fresco:actualImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"focusCrop"</span>fresco:placeholderImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_placeholder"</span>fresco:placeholderImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"fitCenter"</span>fresco:progressBarImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_progress_bar"</span>fresco:progressBarImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"centerInside"</span>fresco:progressBarAutoRotateInterval=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"5000"</span>fresco:failureImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_failure"</span>fresco:failureImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"centerInside"</span>fresco:retryImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_retry"</span>fresco:retryImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"centerCrop"</span>fresco:fadeDuration=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"5000"</span>></<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>></RelativeLayout></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li></ul><div class="save_code tracking-ad" data-mod="popu_249"><a target=_blank target="_blank"><img src="http://static.blog.csdn.net/images/save_snippets.png" alt="" /></a></div>
重试+进度图+失败图 进度图+正确图
背景图—backgroundImage：
<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><RelativeLayout xmlns:android=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res/android"</span>xmlns:fresco=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res-auto"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>><<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>android:id=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@+id/main_sdv"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_centerInParent=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>fresco:actualImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"focusCrop"</span>fresco:fadeDuration=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"5000"</span>fresco:backgroundImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@android:color/holo_orange_light"</span>></<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>></RelativeLayout></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li></ul><div class="save_code tracking-ad" data-mod="popu_249"><a target=_blank target="_blank"><img src="http://static.blog.csdn.net/images/save_snippets.png" alt="" /></a></div>
叠加图—overlayImage：
<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><RelativeLayout xmlns:android=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res/android"</span>xmlns:fresco=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res-auto"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>><<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>android:id=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@+id/main_sdv"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_centerInParent=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>fresco:actualImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"focusCrop"</span>fresco:placeholderImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_placeholder"</span>fresco:placeholderImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"fitCenter"</span>fresco:progressBarImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_progress_bar"</span>fresco:progressBarImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"centerInside"</span>fresco:progressBarAutoRotateInterval=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"5000"</span>fresco:failureImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_failure"</span>fresco:failureImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"centerInside"</span>fresco:retryImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_retry"</span>fresco:retryImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"centerCrop"</span>fresco:fadeDuration=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"5000"</span>fresco:backgroundImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@android:color/holo_orange_light"</span>fresco:pressedStateOverlayImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@android:color/holo_green_dark"</span>fresco:overlayImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@android:color/black"</span>></<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>></RelativeLayout></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li></ul><div class="save_code tracking-ad" data-mod="popu_249"><a target=_blank target="_blank"><img src="http://static.blog.csdn.net/images/save_snippets.png" alt="" /></a></div>
圆形图—roundAsCircle：
一行代码搞定圆形图：设置roundAsCircle为true；
<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><RelativeLayout xmlns:android=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res/android"</span>xmlns:fresco=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res-auto"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>><<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>android:id=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@+id/main_sdv"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_centerInParent=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>fresco:actualImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"focusCrop"</span>fresco:placeholderImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_placeholder"</span>fresco:placeholderImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"fitCenter"</span>fresco:progressBarImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_progress_bar"</span>fresco:progressBarImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"centerInside"</span>fresco:progressBarAutoRotateInterval=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"5000"</span>fresco:failureImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_failure"</span>fresco:failureImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"centerInside"</span>fresco:retryImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_retry"</span>fresco:retryImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"centerCrop"</span>fresco:fadeDuration=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"5000"</span>fresco:backgroundImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@android:color/holo_orange_light"</span>fresco:roundAsCircle=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>></<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>></RelativeLayout></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li></ul><div class="save_code tracking-ad" data-mod="popu_249"><a target=_blank target="_blank"><img src="http://static.blog.csdn.net/images/save_snippets.png" alt="" /></a></div>
圆角图—roundedCornerRadius：
<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><RelativeLayout xmlns:android=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res/android"</span>xmlns:fresco=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res-auto"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>><<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>android:id=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@+id/main_sdv"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_centerInParent=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>fresco:actualImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"focusCrop"</span>fresco:placeholderImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_placeholder"</span>fresco:placeholderImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"fitCenter"</span>fresco:progressBarImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_progress_bar"</span>fresco:progressBarImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"centerInside"</span>fresco:progressBarAutoRotateInterval=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"5000"</span>fresco:failureImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_failure"</span>fresco:failureImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"centerInside"</span>fresco:retryImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_retry"</span>fresco:retryImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"centerCrop"</span>fresco:fadeDuration=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"5000"</span>fresco:backgroundImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@android:color/holo_orange_light"</span>fresco:roundedCornerRadius=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"30dp"</span>></<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>></RelativeLayout></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li></ul><div class="save_code tracking-ad" data-mod="popu_249"><a target=_blank target="_blank"><img src="http://static.blog.csdn.net/images/save_snippets.png" alt="" /></a></div>
可以看到，从图片开始加载一直到图片下载完毕，整个图像都是圆角的。
圆角属性 圆角属性 左上角是否为圆角 fresco:roundTopLeft="false"右上角是否为圆角 fresco:roundTopRight="false"
左下角是否为圆角 fresco:roundBottomLeft="false"右下角是否为圆角 fresco:roundBottomRight="false"当我们同时设置图像显示为圆形图像和圆角图像时，只会显示为圆形图像。
圆形圆角边框宽度及颜色—roundingBorder：
<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><RelativeLayout xmlns:android=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res/android"</span>xmlns:fresco=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res-auto"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>><<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>android:id=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@+id/main_sdv"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_centerInParent=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>fresco:actualImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"focusCrop"</span>fresco:placeholderImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_placeholder"</span>fresco:placeholderImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"focusCrop"</span>fresco:progressBarImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_progress_bar"</span>fresco:progressBarImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"focusCrop"</span>fresco:progressBarAutoRotateInterval=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"5000"</span>fresco:failureImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_failure"</span>fresco:failureImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"focusCrop"</span>fresco:retryImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_retry"</span>fresco:retryImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"focusCrop"</span>fresco:fadeDuration=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"5000"</span>fresco:backgroundImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@android:color/holo_orange_light"</span>fresco:roundAsCircle=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>fresco:roundedCornerRadius=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"30dp"</span>fresco:roundTopLeft=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>fresco:roundTopRight=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>fresco:roundBottomLeft=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>fresco:roundBottomRight=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>fresco:roundingBorderWidth=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"10dp"</span>fresco:roundingBorderColor=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@android:color/black"</span>></<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>></RelativeLayout></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li></ul><div class="save_code tracking-ad" data-mod="popu_249"><a target=_blank target="_blank"><img src="http://static.blog.csdn.net/images/save_snippets.png" alt="" /></a></div>
运行效果(左边显示的是带边框的圆形图像，右边显示的是带边框的圆角图像)：
圆形或圆角图像底下的叠加颜色—roundWithOverlayColor：
<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><RelativeLayout xmlns:android=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res/android"</span>xmlns:fresco=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res-auto"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>><<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>android:id=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@+id/main_sdv"</span>android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"100dp"</span>android:layout_centerInParent=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>fresco:actualImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"focusCrop"</span>fresco:placeholderImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_placeholder"</span>fresco:placeholderImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"focusCrop"</span>fresco:progressBarImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_progress_bar"</span>fresco:progressBarImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"focusCrop"</span>fresco:progressBarAutoRotateInterval=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"5000"</span>fresco:failureImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_failure"</span>fresco:failureImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"focusCrop"</span>fresco:retryImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@mipmap/icon_retry"</span>fresco:retryImageScaleType=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"focusCrop"</span>fresco:fadeDuration=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"5000"</span>fresco:backgroundImage=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@android:color/holo_orange_light"</span>fresco:roundWithOverlayColor=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"@android:color/darker_gray"</span>fresco:roundAsCircle=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>></<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.facebook</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.drawee</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.SimpleDraweeView</span>></RelativeLayout></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li></ul><div class="save_code tracking-ad" data-mod="popu_249"><a target=_blank target="_blank"><img src="http://static.blog.csdn.net/images/save_snippets.png" alt="" /></a></div>
缩放类型—ScaleType：
类型 描述 center 居中，无缩放 centerCrop 保持宽高比缩小或放大，使得两边都大于或等于显示边界。居中显示。 focusCrop 同centerCrop, 但居中点不是中点，而是指定的某个点 centerInside 使两边都在显示边界内，居中显示。如果图尺寸大于显示边界，则保持长宽比缩小图片。 fitCenter 保持宽高比，缩小或者放大，使得图片完全显示在显示边界内。居中显示 fitStart 同上。但不居中，和显示边界左上对齐 fitEnd 同fitCenter， 但不居中，和显示边界右下对齐 fitXY 不保存宽高比，填充满显示边界 none 如要使用tile mode显示, 需要设置为none 总结：
XML属性 意义 fadeDuration 淡入淡出动画持续时间(单位：毫秒ms) actualImageScaleType 实际图像的缩放类型 placeholderImage 占位图 placeholderImageScaleType 占位图的缩放类型 progressBarImage 进度图 progressBarImageScaleType 进度图的缩放类型 progressBarAutoRotateInterval 进度图自动旋转间隔时间(单位：毫秒ms) failureImage 失败图 failureImageScaleType 失败图的缩放类型 retryImage 重试图 retryImageScaleType 重试图的缩放类型 backgroundImage 背景图 overlayImage 叠加图 pressedStateOverlayImage 按压状态下所显示的叠加图 roundAsCircle 设置为圆形图 roundedCornerRadius 圆角半径 roundTopLeft 左上角是否为圆角 roundTopRight 右上角是否为圆角 roundBottomLeft 左下角是否为圆角 roundBottomRight 右下角是否为圆角 roundingBorderWidth 圆形或者圆角图边框的宽度 roundingBorderColor 圆形或者圆角图边框的颜色 roundWithOverlayColor 圆形或者圆角图底下的叠加颜色(只能设置颜色) viewAspectRatio 控件纵横比 GitHub：
开始之前
如果你有使用的心得，技巧，踩坑经历，希望贡献出来，我会在TODO中慢慢添加(^^)/
关于Fresco
<code class="cpp"> Fresco 是一个强大的图片加载组件。Fresco 中设计有一个叫做*image pipeline*的模块。它负责从网络，从本地文件系统，本地资源加载图片。为了最大限度节省空间和CPU时间，它含有<span class="hljs-number">3</span>级缓存设计（<span class="hljs-number">2</span>级内存，<span class="hljs-number">1</span>级文件）。Fresco 中设计有一个叫做*Drawees*模块，方便地显示loading图，当图片不再显示在屏幕上时，及时地释放内存和空间占用。Fresco 支持 Android2<span class="hljs-number">.3</span>(API level <span class="hljs-number">9</span>) 及其以上系统。</code>使用Fresco
这其实不是我写此文章的目的， 因为关于使用， 官方文档已经足够详细；并且多篇博客已经进行了解读和使用引导，甚至可运行阅读和Demo。
什么？想在这儿也学习学习，好吧， 人都是懒惰的，何况我们程序员~~！
那么，我就简单做个收集吧(也不就是Google Or Baidu Or ... 其他搜索引擎)：如果你觉得你有更好的链接，请推荐哦
中文文档
<code class="objectivec"> http:<span class="hljs-comment">//www.fresco-cn.org/ ； 如果真心读不懂英文或者不想读， 那么这里，你可以去看看。</span></code>
导入官方示例
<code class="ruby"> <span class="hljs-symbol">http:</span>/<span class="hljs-regexp">/www.cnblogs.com/stay</span><span class="hljs-regexp">/p/</span><span class="hljs-number">4398432</span>.html； 简单看了下，还不错， 讲的相对详细，我并未细看。因为其实导入和编译项目该是开发的基本功吧,(*^_<span class="hljs-number">_</span>^*) 嘻嘻……</code>简单使用
<code class="objectivec"> http:<span class="hljs-comment">//blog.csdn.net/y1scp/article/details/49245535； 非常详细的使用教程了吧，作者还是比较有心的，点个赞。</span></code>
进阶研究
这是一个作者的系列博客吧，具体内容还没时间细细品读，但是能坚持写，可见很有耐心。
昨晚闲来无事逛微博, 发现一个0.7.0版本Fresco的源码解析,看了看, 很是不错,在此更新推荐给大家:
Fresco-Source-Analysis
目前看到最好的Fresco的源码解读了吧Demo
Fresco-Sample-Usage
这个算是一个不错的示例项目吧，可以参考不少东西，具体对项目的介绍，自己去看doc，或者简书中Facebook开源的Android图片加载库Fresco的Demo项目也有介绍；Huqiu Liao
fresco-demo-for-gradle
秋百万作品，绝对精品。 有个图片加载开源的简单对比，用法也很多，非常有参考价值。值得一提的是，貌似中文文档也是秋百万的作品fresco-docs-cn,可以去观摩一下，我不肯定，但是感觉是。开源库使用之痛
Fresco强大，却也并不完美，但一直在更新，所以，不管你考虑使用，都建议持续关注开源库的发展和更新，因为说不定，就会有好消息，让你学习，让你轻松。
本人是非常欣赏开源作者的各种开源作品，也乐于使用，只是，开源库之初，总有很多不尽如人意的地方，这也是常说的，坑~
是的，这才是本文的重点
本人在新项目中使用Fresco库，非常感谢Facebook~
实际使用， 就会遇到各种问题，而我之所以写，也只是因为有些问题， 确实值得我们注意， 写下了，防止自己下次再犯， 同时，也给遇到类似问题的一些参考吧：
一般情况下，直接 Fresco.initialized(context) 初始化后，在布局中进行如下引用
<code class="css"> <<span class="hljs-tag">com</span><span class="hljs-class">.facebook</span><span class="hljs-class">.drawee</span><span class="hljs-class">.view</span><span class="hljs-class">.SimpleDraweeView</span> <span class="hljs-rule"><span class="hljs-attribute">android</span>:<span class="hljs-value">id=<span class="hljs-string">"@+id/my_image_view"</span> android:layout_width=<span class="hljs-string">"130dp"</span> android:layout_height=<span class="hljs-string">"130dp"</span> fresco:placeholderImage=<span class="hljs-string">"@drawable/ic_launcher"</span> /></span></span></code>就已经可以应付大部分情况了， 也无需担心其他问题；
稍等： 吐槽下， 居然宽高基础使用是必须设置具体的dp值的可是，本人在使用时，偏偏就是用来做相册多选（自作孽，(⊙﹏⊙)b）：
那么问题来了 ，
首先的问题就是OOM。。。
额， 这么强大的库也能OOM?
都知道，多图加载确实好内存，可是，别的三方库是OK的哇，什么情况？当然是使用姿势不太对， 是的， 宫格显示就是大图显示， 导致拖动都卡顿， 于是， 做了优化:
<code class="cpp"> <span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">static</span> <span class="hljs-keyword">void</span> <span class="hljs-title">showThumb</span><span class="hljs-params">(Uri uri, SimpleDraweeView draweeView)</span></span>{ ImageRequest request = ImageRequestBuilder.newBuilderWithSource(uri) .setResizeOptions(<span class="hljs-keyword">new</span> ResizeOptions(DensityUtil.dip2px(<span class="hljs-number">144</span>), DensityUtil.dip2px(<span class="hljs-number">144</span>))) .build(); DraweeController controller = Fresco.newDraweeControllerBuilder() .setImageRequest(request) .setOldController(draweeView.getController()) .setControllerListener(<span class="hljs-keyword">new</span> BaseControllerListener<ImageInfo>()) .build(); draweeView.setController(controller);}</code>乍一看，好爽，自动替我Resize了图片， 还抽取个方法， 好复用， 好爽，O(∩_∩)O~；
Tip: 如果Resize后还会出现问题，那么可能参数设置的问题了吧，细查下宽高大小之类吧运行试了试， 咦~ 滑动好顺畅。。。难道就好了？Oh~No， 新问题出现了，
图片显示不全 （具体表现为显示为纯白色，或纯黑色）
什么鬼？
也是疑惑异常，之前不Resize之前还能显示的，怎么现在反而有些显示不出了？难道是这个方法有什么问题？
遂查看官方文档Resizing，看完心中大呼： 法克~ 细节，细节， 细节
U0~EIQSZBP5ELOH$@`EVU%3.png人家文档说的很清楚嘛，此方法 只支持JPG, 只支持JPG, 只支持JPG, ，内心
此时是崩溃的，心中想， 只支持JPG怎么够用，现在png的，webp的各种格式的怎么办...往下顺着看， 好吧， 哈哈， 请允许我窃喜，是的，官方提供了方法来支持更多格式：
(5LX_1O0V997KM$JL5R_ULR.pngTip: 此处记得，不是setDownsampleEnabled(true)就可以了，还得调用之前的Resize方法，人家文档也说的很明白了
好吧， 也许即使如此，有些人还不知如何设定这个属性呢，其实很简单哇，人家Configuration是可以定义的哇， 初始化的时候进行定义 ：
<code class="objectivec">ImagePipelineConfig config = ImagePipelineConfig<span class="hljs-variable">.newBuilder</span>(<span class="hljs-keyword">this</span>) <span class="hljs-variable">.setDownsampleEnabled</span>(<span class="hljs-literal">true</span>) <span class="hljs-variable">.build</span>();Fresco<span class="hljs-variable">.initialize</span>(<span class="hljs-keyword">this</span>, config);</code>
嗯， 是的， Fresco和其他图片加载框架一样，也是支持自定义一些Config属性的，支持很多，什么DiskCacheConfig、ImagePipelineConfig、MemoryCacheParams等很多，自行看官方文档进行脑补吧~
好吧，问题是否解决了呢，本人运行看了看，ok， 之前白屏的地方，图片出来了，滑动看看呢， 还不错哦。
更多
当然，也还有很多使用上的问题，我会再使用的同时在此继续更新一些，以使自己能温故而知新。
另外，我是喜欢做好人的， 如果你懒， 那么，当你出现问题，有几个地方你得去瞅瞅咯：
Fresco Issue 567 这里有一些PNG图片展示的TooManyBitmapsException
Fresco Issue 84 可以参考看看评论中解决问题的过程
Fresco Issue 738 不知道怎么设置缓存？可作参考
本人也单独配置了一份很详细的Config， 大家也可以根据自己的需要进行个性化配置。
todo 2015/12/18
<code> 此处占坑， 用来总结更多~~</code>
结尾
很多时候， 知道强大的东西还不够，我们还都会用，会用还不够，甚至还得去研习如何用的更精， 用精对于好多人依然不够， 因为还要知道其原理， 甚至学习和自己构建；
最后， 本人正在技术探索的路上， 苦于平时工作压力较大， 时间相对较少， 难免写的过程了有疏漏， 甚至更多，若恰好， 你看到了有问题之处， 或者有建议修改， 那么， 请提出来吧， 帮助我进步 ， 谢谢~
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