安卓实现个性彩色好看的二维码
2024-06-20 06:28:00
前言
二维码以前也写过好几篇，今天姑且是对以前知识的总结，顺便复习一下，圣人说过：温故知新。
还是和以前一样先看下效果，再来对着代码讲解。
看效果图：
之前呢，也写过用安卓实现二维码生成彩色的二维码和带logo的二维码，也知道可以使用QRCode和ZXing两种方式，然后这一篇呢也是写二维码使用BarcodeFormat.QR_CODE，主要也是看见很多的非常漂亮的二维码，这里呢主要模仿qq的二维码，并且也高仿实现了长按发送给朋友和保存到图库的功能，觉得不错呢就请多支持下，哪里不好呢也可以说出来。好了我们一步一步来。
第一步：简单二维码实现
先来个最简单的二维码：
看下简单代码实现：
<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-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*** 根据指定内容生成自定义宽高的二维码图片**<span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @param</span> content* 需要生成二维码的内容*<span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @param</span> width* 二维码宽度*<span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @param</span> height* 二维码高度*<span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @throws</span> WriterException* 生成二维码异常*/</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> Bitmap <span class="hljs-title" style="box-sizing: border-box;">makeQRImage</span>(String content, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> width, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> height)<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">throws</span> WriterException {Hashtable<EncodeHintType, String> hints = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> Hashtable<EncodeHintType, String>();hints.put(EncodeHintType.CHARACTER_SET, <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"UTF-8"</span>);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 图像数据转换，使用了矩阵转换</span>BitMatrix bitMatrix = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> QRCodeWriter().encode(content,BarcodeFormat.QR_CODE, width, height, hints);<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span>[] pixels = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span>[width * height];<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 按照二维码的算法，逐个生成二维码的图片，两个for循环是图片横列扫描的结果</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> y = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>; y < height; y++) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> x = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>; x < width; x++) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (bitMatrix.get(x, y))<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//范围内为黑色的</span>pixels[y * width + x] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xff000000</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//其他的地方为白色</span>pixels[y * width + x] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xffffffff</span>;}}<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 生成二维码图片的格式，使用ARGB_8888</span>Bitmap bitmap = Bitmap.createBitmap(width, height,Bitmap.Config.ARGB_8888);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//设置像素矩阵的范围</span>bitmap.setPixels(pixels, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, width, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, width, height);<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> bitmap;}</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><li style="box-sizing: border-box; padding: 0px 5px;">36</li></ul>
第二步：简单二维码加logo
接下来给二维码加logo:（看图）
<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-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*** 根据指定内容生成自定义宽高的二维码图片** param logoBm* logo图标* param content* 需要生成二维码的内容* param width* 二维码宽度* param height* 二维码高度* throws WriterException* 生成二维码异常*/</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> Bitmap <span class="hljs-title" style="box-sizing: border-box;">makeQRImage</span>(Bitmap logoBmp, String content,<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> QR_WIDTH, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> QR_HEIGHT) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">throws</span> WriterException {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">try</span> {<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 图像数据转换，使用了矩阵转换</span>Hashtable<EncodeHintType, Object> hints = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> Hashtable<EncodeHintType, Object>();hints.put(EncodeHintType.CHARACTER_SET, <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"utf-8"</span>);hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 容错率</span>hints.put(EncodeHintType.MARGIN, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>); <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// default is 4</span>hints.put(EncodeHintType.MAX_SIZE, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">350</span>);hints.put(EncodeHintType.MIN_SIZE, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">100</span>);BitMatrix bitMatrix = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> QRCodeWriter().encode(content,BarcodeFormat.QR_CODE, QR_WIDTH, QR_HEIGHT, hints);<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span>[] pixels = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span>[QR_WIDTH * QR_HEIGHT];<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> y = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>; y < QR_HEIGHT; y++) {<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 下面这里按照二维码的算法，逐个生成二维码的图片，//两个for循环是图片横列扫描的结果</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> x = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>; x < QR_WIDTH; x++) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (bitMatrix.get(x, y))pixels[y * QR_WIDTH + x] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xff000000</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span>pixels[y * QR_WIDTH + x] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xffffffff</span>;}}<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// ------------------添加图片部分------------------//</span>Bitmap bitmap = Bitmap.createBitmap(QR_WIDTH, QR_HEIGHT,Bitmap.Config.ARGB_8888);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 设置像素点</span>bitmap.setPixels(pixels, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, QR_WIDTH, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, QR_WIDTH, QR_HEIGHT);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 获取图片宽高</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> logoWidth = logoBmp.getWidth();<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> logoHeight = logoBmp.getHeight();<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (QR_WIDTH == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span> || QR_HEIGHT == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>;}<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (logoWidth == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span> || logoHeight == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> bitmap;}<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 图片绘制在二维码中央，合成二维码图片</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// logo大小为二维码整体大小的1/2</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">float</span> scaleFactor = QR_WIDTH * <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1.0</span>f / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span> / logoWidth;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">try</span> {Canvas canvas = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> Canvas(bitmap);canvas.drawBitmap(bitmap, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>);canvas.scale(scaleFactor, scaleFactor, QR_WIDTH / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>,QR_HEIGHT / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>);canvas.drawBitmap(logoBmp, (QR_WIDTH - logoWidth) / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>,(QR_HEIGHT - logoHeight) /<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>);canvas.save(Canvas.ALL_SAVE_FLAG);canvas.restore();<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> bitmap;} <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">catch</span> (Exception e) {bitmap = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>;e.getStackTrace();}} <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">catch</span> (WriterException e) {e.printStackTrace();}<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</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><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><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li><li style="box-sizing: border-box; padding: 0px 5px;">52</li><li style="box-sizing: border-box; padding: 0px 5px;">53</li><li style="box-sizing: border-box; padding: 0px 5px;">54</li><li style="box-sizing: border-box; padding: 0px 5px;">55</li><li style="box-sizing: border-box; padding: 0px 5px;">56</li><li style="box-sizing: border-box; padding: 0px 5px;">57</li><li style="box-sizing: border-box; padding: 0px 5px;">58</li><li style="box-sizing: border-box; padding: 0px 5px;">59</li><li style="box-sizing: border-box; padding: 0px 5px;">60</li><li style="box-sizing: border-box; padding: 0px 5px;">61</li><li style="box-sizing: border-box; padding: 0px 5px;">62</li><li style="box-sizing: border-box; padding: 0px 5px;">63</li><li style="box-sizing: border-box; padding: 0px 5px;">64</li><li style="box-sizing: border-box; padding: 0px 5px;">65</li><li style="box-sizing: border-box; padding: 0px 5px;">66</li><li style="box-sizing: border-box; padding: 0px 5px;">67</li><li style="box-sizing: border-box; padding: 0px 5px;">68</li><li style="box-sizing: border-box; padding: 0px 5px;">69</li><li style="box-sizing: border-box; padding: 0px 5px;">70</li><li style="box-sizing: border-box; padding: 0px 5px;">71</li><li style="box-sizing: border-box; padding: 0px 5px;">72</li><li style="box-sizing: border-box; padding: 0px 5px;">73</li></ul>
上段代码可以看出要给二维码图片中间加logo，但是图片不能占据整个二维码图片的很大一部分。然后还必须设置容错率：容错率有M,L,Q,H几个等级，容错率越高,二维码的有效像素点就越多。这里使用小写的utf-8编码，大写会出现]Q2\000026开头内容，为了好看点还设置了边距和大小。
第三步：实现带logo的彩色二维码
接下来我们把黑白矩阵变为彩色矩阵：
就把
<code class="hljs cs 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;">if</span> (bitMatrix.<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">get</span>(x, y))pixels[y * width + x] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xff000000</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span>pixels[y * width + x] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xffffffff</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></ul>
替换为:(这里的颜色随便设置，效果随便改)
<code class="hljs cs 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;">if</span> (x < QR_WIDTH / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span> && y < QR_HEIGHT / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>) {pixels[y * QR_WIDTH + x] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xFF0094FF</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 蓝色</span>Integer.toHexString(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> Random().nextInt());} <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (x < QR_WIDTH / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span> && y > QR_HEIGHT / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>) {pixels[y * QR_WIDTH + x] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xFFFED545</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 黄色</span>} <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (x > QR_WIDTH / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span> && y > QR_HEIGHT / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>) {pixels[y * QR_WIDTH + x] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xFF5ACF00</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 绿色</span>} <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> {pixels[y * QR_WIDTH + x] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xFF000000</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 黑色</span>}} <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> {pixels[y * QR_WIDTH + x] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xffffffff</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 白色</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></ul>
改后的效果：
第四步：给二维码加背景
接下来我们来给二维码图片加背景：
<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-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*** 给二维码图片加背景**/</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> Bitmap <span class="hljs-title" style="box-sizing: border-box;">addBackground</span>(Bitmap foreground,Bitmap background){<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> bgWidth = background.getWidth();<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> bgHeight = background.getHeight();<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> fgWidth = foreground.getWidth();<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> fgHeight = foreground.getHeight();Bitmap newmap = Bitmap.createBitmap(bgWidth, bgHeight, Bitmap.Config.ARGB_8888);Canvas canvas = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> Canvas(newmap);canvas.drawBitmap(background, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>);canvas.drawBitmap(foreground, (bgWidth - fgWidth) / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>,(bgHeight - fgHeight) *<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span> / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span>+<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">70</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>);canvas.save(Canvas.ALL_SAVE_FLAG);canvas.restore();<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> newmap;}</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>
这样效果就变为：
第五步：给二维码加水印
然后二维码的个性化制作就最后一步了：加水印，位置随便放
<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-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*** 在图片右下角添加水印**<span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @param</span> srcBMP* 原图*<span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @param</span> markBMP* 水印图片*<span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @return</span> 合成水印后的图片*/</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> Bitmap <span class="hljs-title" style="box-sizing: border-box;">composeWatermark</span>(Bitmap srcBMP, Bitmap markBMP) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (srcBMP == <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>;}<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 创建一个新的和SRC长度宽度一样的位图</span>Bitmap newb = Bitmap.createBitmap(srcBMP.getWidth(),srcBMP.getHeight(), Bitmap.Config.ARGB_8888);Canvas cv = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> Canvas(newb);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 在 0，0坐标开始画入原图</span>cv.drawBitmap(srcBMP, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 在原图的右下角画入水印</span>cv.drawBitmap(markBMP, srcBMP.getWidth() - markBMP.getWidth()*<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span>,srcBMP.getHeight()*<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">7</span> , <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 保存</span>cv.save(Canvas.ALL_SAVE_FLAG);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 存储</span>cv.restore();<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> newb;}
</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></ul>
这里贴下实现二维码个性化的完整代码类：
<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;">package</span> com.ry.personalizedcode.uitls;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> android.content.Context;
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> android.graphics.Bitmap;
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> android.graphics.BitmapFactory;
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> android.graphics.Canvas;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> com.google.zxing.BarcodeFormat;
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> com.google.zxing.EncodeHintType;
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> com.google.zxing.WriterException;
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> com.google.zxing.common.BitMatrix;
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> com.google.zxing.qrcode.QRCodeWriter;
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> java.util.Hashtable;
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">import</span> java.util.Random;<span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*** Created on 2016/2/24.* 生成二维码的工具类*/</span>
<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);">MakeQRCodeUtil</span> {</span><span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*** 根据指定内容生成自定义宽高的二维码图片** param logoBm* logo图标* param content* 需要生成二维码的内容* param width* 二维码宽度* param height* 二维码高度* throws WriterException* 生成二维码异常*/</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> Bitmap <span class="hljs-title" style="box-sizing: border-box;">makeQRImage</span>(Bitmap logoBmp, String content,<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> QR_WIDTH, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> QR_HEIGHT) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">throws</span> WriterException {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">try</span> {<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 图像数据转换，使用了矩阵转换</span>Hashtable<EncodeHintType, Object> hints = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> Hashtable<EncodeHintType, Object>();hints.put(EncodeHintType.CHARACTER_SET, <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"utf-8"</span>);hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 容错率</span>hints.put(EncodeHintType.MARGIN, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>); <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// default is 4</span>hints.put(EncodeHintType.MAX_SIZE, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">350</span>);hints.put(EncodeHintType.MIN_SIZE, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">100</span>);BitMatrix bitMatrix = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> QRCodeWriter().encode(content,BarcodeFormat.QR_CODE, QR_WIDTH, QR_HEIGHT, hints);<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span>[] pixels = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span>[QR_WIDTH * QR_HEIGHT];<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> y = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>; y < QR_HEIGHT; y++) {<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 下面这里按照二维码的算法，逐个生成二维码的图片，//两个for循环是图片横列扫描的结果</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> x = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>; x < QR_WIDTH; x++) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (bitMatrix.get(x, y)) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (x < QR_WIDTH / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span> && y < QR_HEIGHT / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>) {pixels[y * QR_WIDTH + x] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xFF0094FF</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 蓝色</span>Integer.toHexString(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> Random().nextInt());} <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (x < QR_WIDTH / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span> && y > QR_HEIGHT / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>) {pixels[y * QR_WIDTH + x] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xFFFED545</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 黄色</span>} <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (x > QR_WIDTH / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span> && y > QR_HEIGHT / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>) {pixels[y * QR_WIDTH + x] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xFF5ACF00</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 绿色</span>} <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> {pixels[y * QR_WIDTH + x] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xFF000000</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 黑色</span>}} <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> {pixels[y * QR_WIDTH + x] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xffffffff</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 白色</span>}}}<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// ------------------添加图片部分------------------//</span>Bitmap bitmap = Bitmap.createBitmap(QR_WIDTH, QR_HEIGHT,Bitmap.Config.ARGB_8888);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 设置像素点</span>bitmap.setPixels(pixels, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, QR_WIDTH, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, QR_WIDTH, QR_HEIGHT);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 获取图片宽高</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> logoWidth = logoBmp.getWidth();<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> logoHeight = logoBmp.getHeight();<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (QR_WIDTH == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span> || QR_HEIGHT == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>;}<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (logoWidth == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span> || logoHeight == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> bitmap;}<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 图片绘制在二维码中央，合成二维码图片</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// logo大小为二维码整体大小的1/2</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">float</span> scaleFactor = QR_WIDTH * <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1.0</span>f / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span> / logoWidth;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">try</span> {Canvas canvas = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> Canvas(bitmap);canvas.drawBitmap(bitmap, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>);canvas.scale(scaleFactor, scaleFactor, QR_WIDTH / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>,QR_HEIGHT / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>);canvas.drawBitmap(logoBmp, (QR_WIDTH - logoWidth) / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>,(QR_HEIGHT - logoHeight) /<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>);canvas.save(Canvas.ALL_SAVE_FLAG);canvas.restore();<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> bitmap;} <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">catch</span> (Exception e) {bitmap = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>;e.getStackTrace();}} <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">catch</span> (WriterException e) {e.printStackTrace();}<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>;}<span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*** 获取十六进制的颜色代码.例如 "#6E36B4" , For HTML ,*<span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @return</span> String*/</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> String <span class="hljs-title" style="box-sizing: border-box;">getRandColorCode</span>(){String r,g,b;Random random = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> Random();r = Integer.toHexString(random.nextInt(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">256</span>)).toUpperCase();g = Integer.toHexString(random.nextInt(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">256</span>)).toUpperCase();b = Integer.toHexString(random.nextInt(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">256</span>)).toUpperCase();r = r.length()==<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span> ? <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"0"</span> + r : r ;g = g.length()==<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span> ? <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"0"</span> + g : g ;b = b.length()==<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span> ? <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"0"</span> + b : b ;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> r+g+b;}<span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*** 根据指定内容生成自定义宽高的二维码图片**<span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @param</span> content* 需要生成二维码的内容*<span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @param</span> width* 二维码宽度*<span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @param</span> height* 二维码高度*<span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @throws</span> WriterException* 生成二维码异常*/</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> Bitmap <span class="hljs-title" style="box-sizing: border-box;">makeQRImage</span>(String content, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> width, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> height)<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">throws</span> WriterException {Hashtable<EncodeHintType, String> hints = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> Hashtable<EncodeHintType, String>();hints.put(EncodeHintType.CHARACTER_SET, <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"UTF-8"</span>);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 图像数据转换，使用了矩阵转换</span>BitMatrix bitMatrix = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> QRCodeWriter().encode(content,BarcodeFormat.QR_CODE, width, height, hints);<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span>[] pixels = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span>[width * height];<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 按照二维码的算法，逐个生成二维码的图片，两个for循环是图片横列扫描的结果</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> y = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>; y < height; y++) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> x = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>; x < width; x++) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (bitMatrix.get(x, y))pixels[y * width + x] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xff000000</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span>pixels[y * width + x] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xffffffff</span>;}}<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 生成二维码图片的格式，使用ARGB_8888</span>Bitmap bitmap = Bitmap.createBitmap(width, height,Bitmap.Config.ARGB_8888);bitmap.setPixels(pixels, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, width, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, width, height);<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> bitmap;}<span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*** 从资源文件中获取图片**<span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @param</span> context* 上下文*<span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @param</span> drawableId* 资源文件id*<span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @return</span>*/</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> Bitmap <span class="hljs-title" style="box-sizing: border-box;">gainBitmap</span>(Context context, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> drawableId) {Bitmap bmp = BitmapFactory.decodeResource(context.getResources(),drawableId);<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> bmp;}<span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*** 在图片右下角添加水印**<span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @param</span> srcBMP* 原图*<span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @param</span> markBMP* 水印图片*<span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;"> @return</span> 合成水印后的图片*/</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> Bitmap <span class="hljs-title" style="box-sizing: border-box;">composeWatermark</span>(Bitmap srcBMP, Bitmap markBMP) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (srcBMP == <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>) {<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>;}<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 创建一个新的和SRC长度宽度一样的位图</span>Bitmap newb = Bitmap.createBitmap(srcBMP.getWidth(),srcBMP.getHeight(), Bitmap.Config.ARGB_8888);Canvas cv = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> Canvas(newb);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 在 0，0坐标开始画入原图</span>cv.drawBitmap(srcBMP, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 在原图的右下角画入水印</span>cv.drawBitmap(markBMP, srcBMP.getWidth() - markBMP.getWidth()*<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span>,srcBMP.getHeight()*<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">7</span> , <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 保存</span>cv.save(Canvas.ALL_SAVE_FLAG);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 存储</span>cv.restore();<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> newb;}<span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*** 给二维码图片加背景**/</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> Bitmap <span class="hljs-title" style="box-sizing: border-box;">addBackground</span>(Bitmap foreground,Bitmap background){<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> bgWidth = background.getWidth();<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> bgHeight = background.getHeight();<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> fgWidth = foreground.getWidth();<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> fgHeight = foreground.getHeight();Bitmap newmap = Bitmap.createBitmap(bgWidth, bgHeight, Bitmap.Config.ARGB_8888);Canvas canvas = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> Canvas(newmap);canvas.drawBitmap(background, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>);canvas.drawBitmap(foreground, (bgWidth - fgWidth) / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>,(bgHeight - fgHeight) *<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span> / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span>+<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">70</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>);canvas.save(Canvas.ALL_SAVE_FLAG);canvas.restore();<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> newmap;}
}
</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><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li><li style="box-sizing: border-box; padding: 0px 5px;">52</li><li style="box-sizing: border-box; padding: 0px 5px;">53</li><li style="box-sizing: border-box; padding: 0px 5px;">54</li><li style="box-sizing: border-box; padding: 0px 5px;">55</li><li style="box-sizing: border-box; padding: 0px 5px;">56</li><li style="box-sizing: border-box; padding: 0px 5px;">57</li><li style="box-sizing: border-box; padding: 0px 5px;">58</li><li style="box-sizing: border-box; padding: 0px 5px;">59</li><li style="box-sizing: border-box; padding: 0px 5px;">60</li><li style="box-sizing: border-box; padding: 0px 5px;">61</li><li style="box-sizing: border-box; padding: 0px 5px;">62</li><li style="box-sizing: border-box; padding: 0px 5px;">63</li><li style="box-sizing: border-box; padding: 0px 5px;">64</li><li style="box-sizing: border-box; padding: 0px 5px;">65</li><li style="box-sizing: border-box; padding: 0px 5px;">66</li><li style="box-sizing: border-box; padding: 0px 5px;">67</li><li style="box-sizing: border-box; padding: 0px 5px;">68</li><li style="box-sizing: border-box; padding: 0px 5px;">69</li><li style="box-sizing: border-box; padding: 0px 5px;">70</li><li style="box-sizing: border-box; padding: 0px 5px;">71</li><li style="box-sizing: border-box; padding: 0px 5px;">72</li><li style="box-sizing: border-box; padding: 0px 5px;">73</li><li style="box-sizing: border-box; padding: 0px 5px;">74</li><li style="box-sizing: border-box; padding: 0px 5px;">75</li><li style="box-sizing: border-box; padding: 0px 5px;">76</li><li style="box-sizing: border-box; padding: 0px 5px;">77</li><li style="box-sizing: border-box; padding: 0px 5px;">78</li><li style="box-sizing: border-box; padding: 0px 5px;">79</li><li style="box-sizing: border-box; padding: 0px 5px;">80</li><li style="box-sizing: border-box; padding: 0px 5px;">81</li><li style="box-sizing: border-box; padding: 0px 5px;">82</li><li style="box-sizing: border-box; padding: 0px 5px;">83</li><li style="box-sizing: border-box; padding: 0px 5px;">84</li><li style="box-sizing: border-box; padding: 0px 5px;">85</li><li style="box-sizing: border-box; padding: 0px 5px;">86</li><li style="box-sizing: border-box; padding: 0px 5px;">87</li><li style="box-sizing: border-box; padding: 0px 5px;">88</li><li style="box-sizing: border-box; padding: 0px 5px;">89</li><li style="box-sizing: border-box; padding: 0px 5px;">90</li><li style="box-sizing: border-box; padding: 0px 5px;">91</li><li style="box-sizing: border-box; padding: 0px 5px;">92</li><li style="box-sizing: border-box; padding: 0px 5px;">93</li><li style="box-sizing: border-box; padding: 0px 5px;">94</li><li style="box-sizing: border-box; padding: 0px 5px;">95</li><li style="box-sizing: border-box; padding: 0px 5px;">96</li><li style="box-sizing: border-box; padding: 0px 5px;">97</li><li style="box-sizing: border-box; padding: 0px 5px;">98</li><li style="box-sizing: border-box; padding: 0px 5px;">99</li><li style="box-sizing: border-box; padding: 0px 5px;">100</li><li style="box-sizing: border-box; padding: 0px 5px;">101</li><li style="box-sizing: border-box; padding: 0px 5px;">102</li><li style="box-sizing: border-box; padding: 0px 5px;">103</li><li style="box-sizing: border-box; padding: 0px 5px;">104</li><li style="box-sizing: border-box; padding: 0px 5px;">105</li><li style="box-sizing: border-box; padding: 0px 5px;">106</li><li style="box-sizing: border-box; padding: 0px 5px;">107</li><li style="box-sizing: border-box; padding: 0px 5px;">108</li><li style="box-sizing: border-box; padding: 0px 5px;">109</li><li style="box-sizing: border-box; padding: 0px 5px;">110</li><li style="box-sizing: border-box; padding: 0px 5px;">111</li><li style="box-sizing: border-box; padding: 0px 5px;">112</li><li style="box-sizing: border-box; padding: 0px 5px;">113</li><li style="box-sizing: border-box; padding: 0px 5px;">114</li><li style="box-sizing: border-box; padding: 0px 5px;">115</li><li style="box-sizing: border-box; padding: 0px 5px;">116</li><li style="box-sizing: border-box; padding: 0px 5px;">117</li><li style="box-sizing: border-box; padding: 0px 5px;">118</li><li style="box-sizing: border-box; padding: 0px 5px;">119</li><li style="box-sizing: border-box; padding: 0px 5px;">120</li><li style="box-sizing: border-box; padding: 0px 5px;">121</li><li style="box-sizing: border-box; padding: 0px 5px;">122</li><li style="box-sizing: border-box; padding: 0px 5px;">123</li><li style="box-sizing: border-box; padding: 0px 5px;">124</li><li style="box-sizing: border-box; padding: 0px 5px;">125</li><li style="box-sizing: border-box; padding: 0px 5px;">126</li><li style="box-sizing: border-box; padding: 0px 5px;">127</li><li style="box-sizing: border-box; padding: 0px 5px;">128</li><li style="box-sizing: border-box; padding: 0px 5px;">129</li><li style="box-sizing: border-box; padding: 0px 5px;">130</li><li style="box-sizing: border-box; padding: 0px 5px;">131</li><li style="box-sizing: border-box; padding: 0px 5px;">132</li><li style="box-sizing: border-box; padding: 0px 5px;">133</li><li style="box-sizing: border-box; padding: 0px 5px;">134</li><li style="box-sizing: border-box; padding: 0px 5px;">135</li><li style="box-sizing: border-box; padding: 0px 5px;">136</li><li style="box-sizing: border-box; padding: 0px 5px;">137</li><li style="box-sizing: border-box; padding: 0px 5px;">138</li><li style="box-sizing: border-box; padding: 0px 5px;">139</li><li style="box-sizing: border-box; padding: 0px 5px;">140</li><li style="box-sizing: border-box; padding: 0px 5px;">141</li><li style="box-sizing: border-box; padding: 0px 5px;">142</li><li style="box-sizing: border-box; padding: 0px 5px;">143</li><li style="box-sizing: border-box; padding: 0px 5px;">144</li><li style="box-sizing: border-box; padding: 0px 5px;">145</li><li style="box-sizing: border-box; padding: 0px 5px;">146</li><li style="box-sizing: border-box; padding: 0px 5px;">147</li><li style="box-sizing: border-box; padding: 0px 5px;">148</li><li style="box-sizing: border-box; padding: 0px 5px;">149</li><li style="box-sizing: border-box; padding: 0px 5px;">150</li><li style="box-sizing: border-box; padding: 0px 5px;">151</li><li style="box-sizing: border-box; padding: 0px 5px;">152</li><li style="box-sizing: border-box; padding: 0px 5px;">153</li><li style="box-sizing: border-box; padding: 0px 5px;">154</li><li style="box-sizing: border-box; padding: 0px 5px;">155</li><li style="box-sizing: border-box; padding: 0px 5px;">156</li><li style="box-sizing: border-box; padding: 0px 5px;">157</li><li style="box-sizing: border-box; padding: 0px 5px;">158</li><li style="box-sizing: border-box; padding: 0px 5px;">159</li><li style="box-sizing: border-box; padding: 0px 5px;">160</li><li style="box-sizing: border-box; padding: 0px 5px;">161</li><li style="box-sizing: border-box; padding: 0px 5px;">162</li><li style="box-sizing: border-box; padding: 0px 5px;">163</li><li style="box-sizing: border-box; padding: 0px 5px;">164</li><li style="box-sizing: border-box; padding: 0px 5px;">165</li><li style="box-sizing: border-box; padding: 0px 5px;">166</li><li style="box-sizing: border-box; padding: 0px 5px;">167</li><li style="box-sizing: border-box; padding: 0px 5px;">168</li><li style="box-sizing: border-box; padding: 0px 5px;">169</li><li style="box-sizing: border-box; padding: 0px 5px;">170</li><li style="box-sizing: border-box; padding: 0px 5px;">171</li><li style="box-sizing: border-box; padding: 0px 5px;">172</li><li style="box-sizing: border-box; padding: 0px 5px;">173</li><li style="box-sizing: border-box; padding: 0px 5px;">174</li><li style="box-sizing: border-box; padding: 0px 5px;">175</li><li style="box-sizing: border-box; padding: 0px 5px;">176</li><li style="box-sizing: border-box; padding: 0px 5px;">177</li><li style="box-sizing: border-box; padding: 0px 5px;">178</li><li style="box-sizing: border-box; padding: 0px 5px;">179</li><li style="box-sizing: border-box; padding: 0px 5px;">180</li><li style="box-sizing: border-box; padding: 0px 5px;">181</li><li style="box-sizing: border-box; padding: 0px 5px;">182</li><li style="box-sizing: border-box; padding: 0px 5px;">183</li><li style="box-sizing: border-box; padding: 0px 5px;">184</li><li style="box-sizing: border-box; padding: 0px 5px;">185</li><li style="box-sizing: border-box; padding: 0px 5px;">186</li><li style="box-sizing: border-box; padding: 0px 5px;">187</li><li style="box-sizing: border-box; padding: 0px 5px;">188</li><li style="box-sizing: border-box; padding: 0px 5px;">189</li><li style="box-sizing: border-box; padding: 0px 5px;">190</li><li style="box-sizing: border-box; padding: 0px 5px;">191</li><li style="box-sizing: border-box; padding: 0px 5px;">192</li><li style="box-sizing: border-box; padding: 0px 5px;">193</li><li style="box-sizing: border-box; padding: 0px 5px;">194</li><li style="box-sizing: border-box; padding: 0px 5px;">195</li><li style="box-sizing: border-box; padding: 0px 5px;">196</li><li style="box-sizing: border-box; padding: 0px 5px;">197</li><li style="box-sizing: border-box; padding: 0px 5px;">198</li><li style="box-sizing: border-box; padding: 0px 5px;">199</li><li style="box-sizing: border-box; padding: 0px 5px;">200</li><li style="box-sizing: border-box; padding: 0px 5px;">201</li><li style="box-sizing: border-box; padding: 0px 5px;">202</li><li style="box-sizing: border-box; padding: 0px 5px;">203</li><li style="box-sizing: border-box; padding: 0px 5px;">204</li><li style="box-sizing: border-box; padding: 0px 5px;">205</li><li style="box-sizing: border-box; padding: 0px 5px;">206</li><li style="box-sizing: border-box; padding: 0px 5px;">207</li><li style="box-sizing: border-box; padding: 0px 5px;">208</li><li style="box-sizing: border-box; padding: 0px 5px;">209</li><li style="box-sizing: border-box; padding: 0px 5px;">210</li><li style="box-sizing: border-box; padding: 0px 5px;">211</li><li style="box-sizing: border-box; padding: 0px 5px;">212</li><li style="box-sizing: border-box; padding: 0px 5px;">213</li><li style="box-sizing: border-box; padding: 0px 5px;">214</li><li style="box-sizing: border-box; padding: 0px 5px;">215</li><li style="box-sizing: border-box; padding: 0px 5px;">216</li><li style="box-sizing: border-box; padding: 0px 5px;">217</li><li style="box-sizing: border-box; padding: 0px 5px;">218</li><li style="box-sizing: border-box; padding: 0px 5px;">219</li><li style="box-sizing: border-box; padding: 0px 5px;">220</li><li style="box-sizing: border-box; padding: 0px 5px;">221</li><li style="box-sizing: border-box; padding: 0px 5px;">222</li><li style="box-sizing: border-box; padding: 0px 5px;">223</li><li style="box-sizing: border-box; padding: 0px 5px;">224</li><li style="box-sizing: border-box; padding: 0px 5px;">225</li><li style="box-sizing: border-box; padding: 0px 5px;">226</li><li style="box-sizing: border-box; padding: 0px 5px;">227</li><li style="box-sizing: border-box; padding: 0px 5px;">228</li><li style="box-sizing: border-box; padding: 0px 5px;">229</li><li style="box-sizing: border-box; padding: 0px 5px;">230</li><li style="box-sizing: border-box; padding: 0px 5px;">231</li><li style="box-sizing: border-box; padding: 0px 5px;">232</li><li style="box-sizing: border-box; padding: 0px 5px;">233</li><li style="box-sizing: border-box; padding: 0px 5px;">234</li><li style="box-sizing: border-box; padding: 0px 5px;">235</li><li style="box-sizing: border-box; padding: 0px 5px;">236</li><li style="box-sizing: border-box; padding: 0px 5px;">237</li></ul>
第六步：给二维码实现长按功能
最后为了模拟下qq的查看二维码名片功能，还加了一个长按弹出actionSheet的功能。
看效果：
具体的 安卓版actionSheet的实现，前面博客有介绍需要的请移步。
这里我们先来实现发送给好友功能：（这里就不做第三方的发送）
<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;"> private void sendToFriends() {Intent intent=new Intent(Intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ACTION</span>_SEND)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>Uri imageUri= Uri<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.parse</span>(Environment<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getExternalStorageDirectory</span>()+<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"/code/qrcode.jpg"</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setType</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"image/*"</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.putExtra</span>(Intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.EXTRA</span>_STREAM, imageUri)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setFlags</span>(Intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.FLAG</span>_ACTIVITY_NEW_TASK)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>startActivity(Intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.createChooser</span>(intent, getTitle()))<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</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></ul>
发送给朋友效果图：
然后就是要实现保存到本地图库的功能：
<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-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*** 先保存到本地再广播到图库* */</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</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;">saveImageToGallery</span>(Context context, Bitmap bmp) {<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 首先保存图片</span>File appDir = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> File(Environment.getExternalStorageDirectory(),<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"code"</span>);<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!appDir.exists()) {appDir.mkdir();}String fileName = <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"qrcode.jpg"</span>;file = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> File(appDir, fileName);<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">try</span> {FileOutputStream fos = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> FileOutputStream(file);bmp.compress(CompressFormat.JPEG, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">100</span>, fos);fos.flush();fos.close();} <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">catch</span> (FileNotFoundException e) {e.printStackTrace();} <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">catch</span> (IOException e) {e.printStackTrace();}<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 其次把文件插入到系统图库</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">try</span> {MediaStore.Images.Media.insertImage(context.getContentResolver(), file.getAbsolutePath(), fileName, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>);<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// 最后通知图库更新</span>context.sendBroadcast(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> Intent( Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"file://"</span>+ file)));} <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">catch</span> (FileNotFoundException e) {e.printStackTrace();}}</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>
总结：
这篇说白了就是使用了大量的Canvas和bitmap的处理，然后篇幅也是有点长，看起来也是有点累。要看完整的代码请自己下载PersonalizedCode.rar。
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