RecyclerView 悬浮/粘性头部——StickyHeaderDecoration
2024-05-30 20:31:19
转载至：https://blog.csdn.net/qian520ao/article/details/76167193
ItemDecoration是recyclerView拓展的一个很好工具，支持我们在recyclerView上面做各种操作，而且耦合性低，容易添加。这篇我们先用ItemDecoration来做悬浮/粘性头部，后面还可以用ItemDecoration做时间轴，手机通讯录联系人右侧字母导航栏。
老规矩，先上图。
集成方式
github地址:https://github.com/qdxxxx/StickyHeaderDecoration
天气热，本github已安装空调，star即可免费享用~~
- 注入依赖
Step 1. Add the JitPack repository to your build file
Step 2. Add the dependency
allprojects {repositories {...maven { url 'https://jitpack.io' }}}- 1
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dependencies {compile 'com.github.qdxxxx:StickyHeaderDecoration:1.0.1'}- 1
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Activity里面集成代码
- 分组头部
NormalDecoration decoration = new NormalDecoration() {@Overridepublic String getHeaderName(int pos) {return //返回每个分组头部名称;}};- 1
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自定义头部/悬浮头部layout】【自定义头部加载图片请用
loadImage()方法】
decoration.setOnDecorationHeadDraw(new NormalDecoration.OnDecorationHeadDraw() {@Overridepublic View getHeaderView(int pos) {return //返回自定义头部view;}});- 1
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头部点击事件
decoration.setOnHeaderClickListener(new NormalDecoration.OnHeaderClickListener() {@Overridepublic void headerClick(int pos) {}});- 1
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GridLayoutManager请配合GridDecoration使用。
方法及属性介绍
name format 中文解释 setHeaderHeight integer 分组头部高度 setTextPaddingLeft integer 普通分组头部【只含文字】文字左边距 setTextSize integer 普通分组头部【只含文字】文字大小 setTextColor integer 普通分组头部【只含文字】文字颜色 setHeaderContentColor integer 普通分组头部【只含文字】文字背景颜色 onDestory 清空数据集合/监听等 *loadImage String,integer,ImageView 用来加载并刷新图片到分组头部【自定义头部很重要的方法！】
实现解刨
又要开始漫天代码的解刨了，非专业战斗人员…请务必耐着性子看。
首先我们来划分几个主要的功能模块- 预留不同分组的头部空间
- 绘制不同分组头部
- 绘制悬浮头部
- 悬浮头部粘性效果（上推效果）
- 头部点击处理
- 自定义layout的头部
- GridLayoutManager的适配
进击的
ItemDecoration以下一个段落引用【带心情去旅行】的简书，写的很具体。
先看下RecyclerView.ItemDecoration的源码（部分）：
public static abstract class ItemDecoration {...public void onDraw(Canvas c, RecyclerView parent, State state) {onDraw(c, parent);}public void onDrawOver(Canvas c, RecyclerView parent, State state) {onDrawOver(c, parent);}public void getItemOffsets(Rect outRect, View view, RecyclerView parent, State state) {getItemOffsets(outRect, ((LayoutParams) view.getLayoutParams()).getViewLayoutPosition(),parent);} }- 1
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里面是我们常用的三个方法：
- getItemOffsets：通过Rect为每个Item设置偏移，用于绘制Decoration。
- onDraw：通过该方法，在Canvas上绘制内容，在绘制Item之前调用。（如果没有通过getItemOffsets设置偏移的话，Item的内容会将其覆盖）
- onDrawOver：通过该方法，在Canvas上绘制内容,在Item之后调用。(画的内容会覆盖在item的上层)
RecyclerView 的背景、onDraw绘制的内容、Item、onDrawOver绘制的内容，各层级关系如下：
表示感谢【带心情去旅行】
预留不同分组的头部空间
我们为每个不同头部名称的第一个item设置头部高度
根据上面的讲解，我们用
getItemOffsets()方法设置分组的item头部，我们只要判断当前item和上一个item是否属于同一个group即可。/*我们为每个不同头部名称的第一个item设置头部高度*/int pos = parent.getChildAdapterPosition(itemView); //获取当前itemView的位置String curHeaderName = getHeaderName(pos); //根据pos获取分组头部名if (pos == 0 || !curHeaderName.equals(getHeaderName(pos - 1))) {//如果当前位置为0，或者与上一个item头部名不同的，都腾出头部空间outRect.top = headerHeight; //设置itemView PaddingTop的距离}- 1
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绘制不同分组头部
用
onDrawOver()来绘制分组头部，相当于绘制在item的界面之上(因为item已经设置了偏移)
和上述方法一样，我们先获得每个分组的位置，然后绘制文字即可(自定义layout亦是如此)- 我们先获取当前屏幕所有recyclerView显示的item
- 如果头部距离顶部==2*headerHeight时，悬浮头部就要向上偏移（上推效果）
- 头部距离顶部==headerHeight时，悬浮头部偏移headerHeight（推离屏幕效果）
int childCount = recyclerView.getChildCount();//获取屏幕上可见的item数量- 1
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for (int i = 0; i < childCount; i++) {View childView = recyclerView.getChildAt(i);int pos = recyclerView.getChildAdapterPosition(childView); //获取当前view在Adapter里的posString curHeaderName = getHeaderName(pos); //根据pos获取要悬浮的头部名int viewTop = childView.getTop() + recyclerView.getPaddingTop();if (pos == 0 || !curHeaderName.equals(getHeaderName(pos - 1))) {//如果当前位置为0，或者与上一个item头部名不同的，都腾出头部空间//绘制每个组头【奥迪上头的a(阿尔法罗密欧上头就不用绘制a),本田上头的b】canvas.drawRect(left, viewTop - headerHeight, right, viewTop, mHeaderContentPaint);//绘制头部背景canvas.drawText(curHeaderName, left + textPaddingLeft, viewTop - headerHeight / 2 + txtYAxis, mHeaderTxtPaint);//绘制文字，文字的基线可以看我的自定义菜单，有说到if (headerHeight < viewTop && viewTop <= 2 * headerHeight) { //此判断是刚好2个头部碰撞，悬浮头部就要偏移translateTop = viewTop - 2 * headerHeight;//悬浮头部需要偏移的距离(y轴方向)}stickyHeaderPosArray.put(pos, viewTop);//将头部信息放进array，【头部点击处理有讲解】}}- 1
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绘制悬浮头部
通过上面的方法，我们就能绘制出每个分组的头部。最后我们绘制一次悬浮的头部
canvas.save();canvas.translate(0, translateTop);canvas.drawRect(left, 0, right, headerHeight, mHeaderContentPaint);canvas.drawText(firstHeaderName, left + textPaddingLeft, headerHeight / 2 + txtYAxis, mHeaderTxtPaint); // canvas.drawLine(0, headerHeight / 2, right, headerHeight / 2, mHeaderTxtPaint);//画条线看看文字居中不canvas.restore();- 1
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头部点击处理
头部点击这个一开始的确有点棘手，因为这个分组的头部是我们额外绘制上的，就必须要通过自己的计算和存储头部信息。
我们在绘制头部的时候，通过SparseArray将头部信息存储集合里，但是每onDrawOver的时候都要clear一下，确保头部数据正确。
最后通过GestureDetector来处理用户触摸事件，根据用户触摸的y轴位置来判断SparseArray是否包含该位置。@Override//单击事件public boolean onSingleTapUp(MotionEvent e) {for (int i = 0; i < stickyHeaderPosArray.size(); i++) {int value = stickyHeaderPosArray.valueAt(i);float y = e.getY();if (value - headerHeight <= y && y <= value) {//如果点击到分组头if (headerClickEvent != null) {headerClickEvent.headerClick(stickyHeaderPosArray.keyAt(i));}return true;}}return false;}- 1
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自定义layout的头部
绘制自定义layout的头部有2个要点
- 如何将layout布局绘制到canvas上
- 如果layout里有图片，图片加载完成后需要通知canvas刷新，以显示头部图片（否则需要用户滑动才能更新图片）
绘制view到canvas
我们可以通过
view.setDrawingCacheEnabled(true)方法，通过cache将view转化为bitmap,在用headerView.getDrawingCache()获取bitmap对象。View headerView = headerDrawEvent.getHeaderView(firstPos);headerView.measure(//measure布局View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));headerView.setDrawingCacheEnabled(true);headerView.layout(0, 0, right, headerHeight);//布局layoutcanvas.drawBitmap(headerView.getDrawingCache(), left, 0, null);- 1
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但是如果view里面包含图片的话，图片不太可能是我们事先存储好的，而是通过网络请求获得的图片url，然后再加载。所以这也是一个难点之一。
通过url绘制图片到头部
- 如果图片暂未加载完成，通过Glide加载，加载完成后通过map集合来存储图片。
- 图片加载完成后用
mRecyclerView.postInvalidate()，从而间接性的手动调用onDrawOver()方法，重新绘制已经加载好的图片。
public void loadImage(final String url, final int pos, ImageView imageView) {if (imgDrawableMap.get(url) != null) {//如果图片已经加载过了，并且已经存储imageView.setImageDrawable(imgDrawableMap.get(url));} else {Glide.with(mRecyclerView.getContext()).load(url).into(new SimpleTarget<Drawable>() {@Overridepublic void onResourceReady(Drawable resource, Transition<? super Drawable> transition) {headViewMap.remove(pos);//删除，重新更新imgDrawableMap.put(url, resource);mRecyclerView.postInvalidate();}});}}- 1
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更多详细功能请移步
NormalDecoration，并配合onDrawOver()解析。
所以自定义layout有图片请务必使用loadImage()方法，以便及时讲加载完的图片绘制到界面上。GridLayoutManager的适配
GridGridDecoration也有2个难点突破
- 设置item的
getItemOffsets，不仅仅是分组头 - 设置当前分组的最后一个item的Span.
- 其它的就不需要我们设置了，normalDecoration已经帮我们完成了【自信回头】
public abstract class GridDecoration extends NormalDecoration {private int itemTotalCount;public GridDecoration(int itemTotalCount, int span) {this.itemTotalCount = itemTotalCount;for (int pos = 0; pos < itemTotalCount; pos++) {/*我们为每个不同头部名称的第一个item设置头部高度*/String curHeaderName = getRealHeaderName(pos); //根据j获取要悬浮的头部名if (!headerPaddingSet.contains(pos) && (pos == 0 || !curHeaderName.equals(getRealHeaderName(pos - 1)))) {//如果是分组头部groupHeadPos.add(pos);for (int i = 0; i < span; i++) {headerPaddingSet.add(pos + i);if (!curHeaderName.equals(getRealHeaderName(pos + i + 1))) {//如果下一个分组名称不一致，passbreak;}}}if (!curHeaderName.equals(getRealHeaderName(pos + 1)) && groupHeadPos.size() > 0) {int preHeadPos = (int) ((TreeSet) (groupHeadPos)).last();int padSpan = span - (pos - preHeadPos) % span;headerSpanArray.put(pos, padSpan);}}}private Set<Integer> headerPaddingSet = new TreeSet<>(); //用来记录每个头部的paddintTop信息private Set<Integer> groupHeadPos = new TreeSet<>(); //记录每个分组第一个头部的pos【用于计算当前组最后一个item的span】private SparseArray<Integer> headerSpanArray = new SparseArray<>(); //用来记录每个分组最后一个item的spanprivate GridLayoutManager.SpanSizeLookup lookup;@Overridepublic void getItemOffsets(Rect outRect, View itemView, RecyclerView parent, RecyclerView.State state) {super.getItemOffsets(outRect, itemView, parent, state);if (lookup == null) {lookup = new GridLayoutManager.SpanSizeLookup() {//相当于weight@Overridepublic int getSpanSize(int position) {int returnSpan = 1;int index = headerSpanArray.indexOfKey(position);if (index >= 0) {returnSpan = headerSpanArray.valueAt(headerSpanArray.indexOfKey(position)); //设置itemView PaddingTop的距离}return returnSpan;}};final GridLayoutManager gridLayoutManager = (GridLayoutManager) parent.getLayoutManager();gridLayoutManager.setSpanSizeLookup(lookup);}/*我们为每个不同头部名称的第一个item设置头部高度*/int pos = parent.getChildAdapterPosition(itemView); //获取当前itemView的位置if (headerPaddingSet.contains(pos)) {outRect.top = headerHeight; //设置itemView PaddingTop的距离}}}- 1
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总结
至此我们的功能都已经描述结束，做了这个小功能的确收货不少，比较多的耗时在GridDecoration的设计，因为不清楚能够动态的设置Span，一开始是通过设置itemOffsets的paddingRight去计算的，然后还要计算下一个分组的头部，各种问题，所以以后做功能时候先看看有没有api可以操作的，这样来的更方便和容易。最后附上github望小伙伴们多多点赞哈。有建议和意见还望在评论出提出~~
https://github.com/qdxxxx/StickyHeaderDecoration
Android中头部悬浮StickyListHeader的简单使用 - Tangsan6666的博客
11-20 502
一、实现效果：头部停留 不断一直保持在顶部
二、实现步骤：
1、导入Libary：
compile
‘se.emilsjolander:stickylistheaders:2.7.0’
2…来自： Tangsan6666的博客
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…来自： 不忘初心
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&lt;方式二&gt;绘制ItemDecoration实现方式
二者实现效果一样，下面分析下…
来自： little762的博客
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来自： 写点什么捏
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2，compile 'com.timehop.stickyheadersrecyclerview:library:[0.4.3…来自： vily_luky的博客
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根据我…
来自： cjm2484836553的博客
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来自： sunbinkang的博客
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风一样的男人"><span class="desc oneline">对于RecyclerView的ItemDecoration相信大家都不会陌生，因为RecyclerView并不像ListView那样自带分割线，所以我们需要继承ItemDecoration去手动绘制分...</span></a><span class="blog_title_box oneline"><a target="_blank" href="https://blog.csdn.net/xiaxiazaizai01">来自： <span class="blog_title"> 风一样的男人</span></a></span></p></div></div><div class="recommend-item-box recommend-ad-box"><div id="kp_box_61" data-pid="61" data-track-view="{"mod":"kp_popu_61-557","con":",,"}" data-track-click="{"mod":"kp_popu_61-557","con":",,"}"><div class="mediav_ad"><newsfeed class="newsfeed QIHOO__WEB__SO__1542785853189_678" id="QIHOO__WEB__SO__1542785853189_678" style="display:block;margin:0;padding:0;border:none;width:852px;height:60px;overflow-y:hidden;overflow-x:hidden;position:relative;text-align:left;"><info-div id="QIHOO__WEB__SO__1542785853189_678-info" style="zoom:1"><info-div class="QIHOO__WEB__SO__1542785853189_678 singleImage clk" data-href="https://s1.milkjpg.com/s?type=2&r=20&mv_ref=blog.csdn.net&enup=CAABcXSf2AgAAtifdHEA&mvid=MTExNDE3Njk4MDIzMzExMTExMDAwMTg&bid=12bab6ef532fda85&price=AAAAAFv1Cz0AAAAAAAwSeysVYnM6vGY/+pKtCQ==&finfo=DAABCAABAAAAOAgAAgAAAHEEAAM/PeG1px3d9gAIAAIAAAADCgADV2/AxOflDkEIAAQAAAB6BgAGHQMIAAgACIuACgAJAAAAAAACEBgGAAoAAAA&ugi=FcTgigEVyNtrTBUCFUAVXhUAABW8xMyBChaECBXIAQA&uai=FaixkwIlAhUEFt7JnPiB69vvrgEV8ggl94Ok3w0lABUaAA&ubi=FYCISRXSirgCFYSE3xYVlJ+QVxUGFRwW7qHy4BYW3smx34ux4O+uATQCFrDAkIAIJQYVvovfkQ0V+AUVADb7ypz4gpmn5XsA&clickid=0&cpx=__OFFSET_X__&cpy=__OFFSET_Y__&cs=__EVENT_TIME_START__&ce=__EVENT_TIME_END__&csign=b9db89f160a0827a&csign2=WTHatCOS4HZ=&url=http%3A%2F%2Fgp1.mysdkj123.cn%2F" data-pv="https://s1.milkjpg.com/s?type=1&r=20&tid=MTExNDE3Njk4MDIzMzExMTExMDAwMTg&finfo=DAABCAABAAAAOAgAAgAAAHEEAAM/PeG1px3d9gAIAAIAAAADCgADV2/AxOflDkEIAAQAAAB6BgAGHQMIAAgACIuACgAJAAAAAAACEBgGAAoAAAA&mv_ref=blog.csdn.net&enup=CAABcXSf2AgAAtifdHEA&mvid=MTExNDE3Njk4MDIzMzExMTExMDAwMTg&bid=12bab6ef532fda85&ugi=FcTgigEVyNtrTBUCFUAVXhUAABW8xMyBChaECBXIAQA&uai=FaixkwIlAhUEFt7JnPiB69vvrgEV8ggl94Ok3w0lABUaAA&ubi=FYCISRXSirgCFYSE3xYVlJ+QVxUGFRwW7qHy4BYW3smx34ux4O+uATQCFrDAkIAIJQYVvovfkQ0V+AUVADb7ypz4gpmn5XsA&ds=1&price=AAAAAFv1Cz0AAAAAAAwSeysVYnM6vGY/+pKtCQ==,https://max-l.mediav.com/rtb?type=2&d=100&b=12bab6ef532fda85&p=2255956&l=1136674&s=1&z=1&w=AAAAAFv1Cz0AAAAAAAwSn/NrS2be/W/N5UoP3w==&k=X+dS8AAAAAA=&i=9L4YAulES9cu&v=11141769802331111100018" data-clk="https://max-l.mediav.com/rtb?type=3&d=100&b=12bab6ef532fda85&p=2255956&l=1136674&s=1&k=X+dS8AAAAAA=&i=9L4YAulES9cu&v=11141769802331111100018&x=__OFFSET_X__&y=__OFFSET_Y__&st=__EVENT_TIME_START__&et=__EVENT_TIME_END__&tc=&turl="> <info-div class="wrap"><info-div class="singleImage-img singleImage-img-left"><info-div class="img" style="background-image:url(https://s3m.mediav.com/galileo/598528-32c81488937c564799107964e350915c.jpg)"><info-div class="ads-tag"></info-div></info-div></info-div><info-div class="singleImage-body singleImage-body-left"><info-div class="singleImage-title">东门股王8年追涨停铁律“1272”曝光，震惊众人！</info-div><info-div class="singleImage-desc">美易互动 · 燨燚</info-div></info-div><div class="recommend-item-box recommend-box-ident type_blog clearfix" data-track-view="{"mod":"popu_387","con":",https://blog.csdn.net/qq_34240569/article/details/78283447,BlogCommendFromBaidu_13,index_13"}" data-track-click="{"mod":"popu_387","con":",https://blog.csdn.net/qq_34240569/article/details/78283447,BlogCommendFromBaidu_13,index_13"}" data-flg="true"><div class="content" style="width: 702px;"><a href="https://blog.csdn.net/qq_34240569/article/details/78283447" target="_blank" title="RecyclerView使用ItemDecoration实现吸顶效果 - qq_34240569的博客"><h4 class="text-truncate oneline" style="width: 610px;"><em>RecyclerView</em>使用ItemDecoration实现吸顶效果 - qq_34240569的博客 </h4><div class="info-box d-flex align-content-center"><!-- <p class="avatar"><img src="https://avatar.csdn.net/D/A/6/3_qq_34240569.jpg" alt="qq_34240569" class="avatar-pic"><span class="namebox"><span class="name">qq_34240569</span><span class="triangle"></span></span></p> --><p class="date-and-readNum"><span class="date hover-show">10-19</span><span class="read-num hover-hide"><svg class="icon csdnc-yuedushu" aria-hidden="true"><use xlink:href="#csdnc-m-passwords-visible"></use></svg>1373</span></p></div></a><p class="content" style="width: 702px;"><a href="https://blog.csdn.net/qq_34240569/article/details/78283447" target="_blank" title="RecyclerView使用ItemDecoration实现吸顶效果 - qq_34240569的博客"><span class="desc oneline">写此博客目的仅仅用于帮助自己做笔记吸顶效果在很多APP都可以看见，现在可以借助RecyclerView的ItemDecoration 来简单实现一个吸顶效果直接上效果图：
首先实现一个Mo…
来自： qq_34240569的博客
<div class="recommend-item-box recommend-box-ident type_blog clearfix" data-track-view="{"mod":"popu_387","con":",https://blog.csdn.net/chenbaige/article/details/51445189,BlogCommendFromBaidu_14,index_14"}" data-track-click="{"mod":"popu_387","con":",https://blog.csdn.net/chenbaige/article/details/51445189,BlogCommendFromBaidu_14,index_14"}" data-flg="true"><div class="content" style="width: 702px;"><a href="https://blog.csdn.net/chenbaige/article/details/51445189" target="_blank" title="如何优雅的实现recycleview加入顶部headerview，实现一起滑动效果 - 白哥哥的博客"><h4 class="text-truncate oneline" style="width: 610px;">如何优雅的实现recycleview加入顶部headerview，实现一起滑动效果 - 白哥哥的博客 </h4><div class="info-box d-flex align-content-center"><!-- <p class="avatar"><img src="https://avatar.csdn.net/E/4/A/3_chenbaige.jpg" alt="chenbaige" class="avatar-pic"><span class="namebox"><span class="name">chenbaige</span><span class="triangle"></span></span></p> --><p class="date-and-readNum"><span class="date hover-show">05-18</span><span class="read-num hover-hide"><svg class="icon csdnc-yuedushu" aria-hidden="true"><use xlink:href="#csdnc-m-passwords-visible"></use></svg>3672</span></p></div></a><p class="content" style="width: 702px;"><a href="https://blog.csdn.net/chenbaige/article/details/51445189" target="_blank" title="如何优雅的实现recycleview加入顶部headerview，实现一起滑动效果 - 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shaoyezhangliwei的专栏"><h4 class="text-truncate oneline" style="width: 610px;">StickyListHeaders的用法说明（带字母索引条） - shaoyezhangliwei的专栏 </h4><div class="info-box d-flex align-content-center"><!-- <p class="avatar"><img src="https://avatar.csdn.net/6/C/3/3_shaoyezhangliwei.jpg" alt="shaoyezhangliwei" class="avatar-pic"><span class="namebox"><span class="name">shaoyezhangliwei</span><span class="triangle"></span></span></p> --><p class="date-and-readNum"><span class="date hover-show">11-20</span><span class="read-num hover-hide"><svg class="icon csdnc-yuedushu" aria-hidden="true"><use xlink:href="#csdnc-m-passwords-visible"></use></svg>4009</span></p></div></a><p class="content" style="width: 702px;"><a href="https://blog.csdn.net/shaoyezhangliwei/article/details/49949373" target="_blank" title="StickyListHeaders的用法说明（带字母索引条） - shaoyezhangliwei的专栏"><span class="desc oneline">有些同学可能没用过这个SckyListHeadersListView 先发个效果图,图片是从别的地方拷贝过来的以下的几个类 直接拷贝到项目中 备用。
import java.lang.refl…
来自： shaoyezhangliwei的专栏
<div class="recommend-item-box recommend-box-ident type_blog clearfix" data-track-view="{"mod":"popu_387","con":",https://blog.csdn.net/QS219/article/details/52293130,BlogCommendFromGuangxin_20,index_20"}" data-track-click="{"mod":"popu_387","con":",https://blog.csdn.net/QS219/article/details/52293130,BlogCommendFromGuangxin_20,index_20"}" data-flg="true"><div class="content" style="width: 702px;"><a href="https://blog.csdn.net/QS219/article/details/52293130" target="_blank" title="使用sticky-headers-recyclerview 完成 recyclerview粘性头部 - "><h4 class="text-truncate oneline" style="width: 610px;">使用sticky-headers-<em>recyclerview</em> 完成 <em>recyclerview</em><em>粘性</em><em>头部</em> - </h4><div class="info-box d-flex align-content-center"><!-- <p class="avatar"><img src="https://avatar.csdn.net/8/5/3/3_qs219.jpg" alt="QS219" class="avatar-pic"><span class="namebox"><span class="name">QS219</span><span class="triangle"></span></span></p> --><p class="date-and-readNum"><span class="date hover-show">08-23</span><span class="read-num hover-hide"><svg class="icon csdnc-yuedushu" aria-hidden="true"><use xlink:href="#csdnc-m-passwords-visible"></use></svg>4517</span></p></div></a><p class="content" style="width: 702px;"><a href="https://blog.csdn.net/QS219/article/details/52293130" target="_blank" title="使用sticky-headers-recyclerview 完成 recyclerview粘性头部 - "><span class="desc oneline">使用sticky-headers-recyclerview 完成 recyclerview粘性头部</span></a></p></div></div><div class="recommend-item-box recommend-box-ident type_blog clearfix" data-track-view="{"mod":"popu_387","con":",https://blog.csdn.net/bydbbb/article/details/78709732,BlogCommendFromGuangxin_21,index_21"}" data-track-click="{"mod":"popu_387","con":",https://blog.csdn.net/bydbbb/article/details/78709732,BlogCommendFromGuangxin_21,index_21"}" data-flg="true"><div class="content" style="width: 702px;"><a href="https://blog.csdn.net/bydbbb/article/details/78709732" target="_blank" title="RecyclerView实现带有头部的顶部悬浮置顶布局 - byd666的博客"><h4 class="text-truncate oneline" style="width: 610px;"><em>RecyclerView</em>实现带有<em>头部</em>的顶部<em>悬浮</em>置顶布局 - byd666的博客 </h4><div class="info-box d-flex align-content-center"><!-- <p class="avatar"><img src="https://avatar.csdn.net/4/B/A/3_bydbbb.jpg" alt="bydbbb" class="avatar-pic"><span class="namebox"><span class="name">bydbbb</span><span class="triangle"></span></span></p> --><p class="date-and-readNum"><span class="date hover-show">12-04</span><span class="read-num hover-hide"><svg class="icon csdnc-yuedushu" aria-hidden="true"><use xlink:href="#csdnc-m-passwords-visible"></use></svg>5100</span></p></div></a><p class="content" style="width: 702px;"><a href="https://blog.csdn.net/bydbbb/article/details/78709732" target="_blank" title="RecyclerView实现带有头部的顶部悬浮置顶布局 - byd666的博客"><span class="desc oneline">由于项目需求需要，需要一个带有头部的吸顶布局，在网上搜索了好多实现办法，都不太理想，最终使用对RecyclerView添加分割线的方式，重写了RecyclerView的分割线来实现这个悬浮栏。效果比较...</span></a><span class="blog_title_box oneline"><a target="_blank" href="https://blog.csdn.net/bydbbb">来自： <span class="blog_title"> byd666的博客</span></a></span></p></div></div><div class="recommend-item-box recommend-box-ident type_blog clearfix" data-track-view="{"mod":"popu_387","con":",https://blog.csdn.net/jsonChumpKlutz/article/details/79226219,BlogCommendFromGuangxin_22,index_22"}" data-track-click="{"mod":"popu_387","con":",https://blog.csdn.net/jsonChumpKlutz/article/details/79226219,BlogCommendFromGuangxin_22,index_22"}" data-flg="true"><div class="content" style="width: 702px;"><a href="https://blog.csdn.net/jsonChumpKlutz/article/details/79226219" target="_blank" title="Android RecyclerView-使用Itemdecoration实现粘性头部功能,详细到具体步骤. - 那个人_的博客"><h4 class="text-truncate oneline" style="width: 610px;">Android <em>RecyclerView</em>-使用Itemdecoration实现<em>粘性</em><em>头部</em>功能,详细到具体步骤. - 那个人_的博客 </h4><div class="info-box d-flex align-content-center"><!-- <p class="avatar"><img src="https://avatar.csdn.net/F/8/3/3_jsonchumpklutz.jpg" alt="jsonChumpKlutz" class="avatar-pic"><span class="namebox"><span class="name">jsonChumpKlutz</span><span class="triangle"></span></span></p> --><p class="date-and-readNum"><span class="date hover-show">02-01</span><span class="read-num hover-hide"><svg class="icon csdnc-yuedushu" aria-hidden="true"><use xlink:href="#csdnc-m-passwords-visible"></use></svg>2838</span></p></div></a><p class="content" style="width: 702px;"><a href="https://blog.csdn.net/jsonChumpKlutz/article/details/79226219" target="_blank" title="Android RecyclerView-使用Itemdecoration实现粘性头部功能,详细到具体步骤. - 那个人_的博客"><span class="desc oneline">一 前言该文详细的介绍了RecyclerView.ItemDecoration实现分组粘性头部的功能,让我们自己生产代码,告别代码搬运工的时代.另外文末附有完整Demo的连接.看下效果:
…
来自： 那个人_的博客
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出自【蛟-blog】
0.介绍0.1：先看下效果图吧。
请…来自： 千里逐梦
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来自： x1198928367的博客
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…来自： qq_27439299的博客
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来自： hx3971的博客
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yu_bug的博客"><span class="desc oneline">文章参考自http://www.jianshu.com/p/fe69a53502ab.源码也去这上找吧.另外感谢上边连接作者.其实代码没多少…
来自： yu_bug的博客
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import android.graph…来自： qq_28898075的博客
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1…来自： zhaocanrong的博客
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一、自定义tablayout选…
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【Android】RecyclerView：打造悬浮效果
RecyclerView分组悬浮列表
上图来自于网络，上图的列表中有一个悬浮的粘性头部的效果，现在这种效果的需求比较常见了，像…
来自： 禽兽先生不禽兽
<div class="recommend-item-box recommend-box-ident type_blog clearfix" data-track-view="{"mod":"popu_387","con":",https://blog.csdn.net/liangfeng093/article/details/78709927,BlogCommendFromBaidu_41,index_41"}" data-track-click="{"mod":"popu_387","con":",https://blog.csdn.net/liangfeng093/article/details/78709927,BlogCommendFromBaidu_41,index_41"}" data-flg="true"><div class="content" style="width: 702px;"><a href="https://blog.csdn.net/liangfeng093/article/details/78709927" target="_blank" title="使用RecyclerView的ItemDecoration实现StickyHeader效果（笔记） - liangfeng093的博客"><h4 class="text-truncate oneline" style="width: 618px;">使用<em>RecyclerView</em>的ItemDecoration实现StickyHeader效果（笔记） - liangfeng093的博客 </h4><div class="info-box d-flex align-content-center"><!-- <p class="avatar"><img src="https://avatar.csdn.net/F/D/B/3_liangfeng093.jpg" alt="liangfeng093" class="avatar-pic"><span class="namebox"><span class="name">liangfeng093</span><span class="triangle"></span></span></p> --><p class="date-and-readNum"><span class="date hover-show">12-04</span><span class="read-num hover-hide"><svg class="icon csdnc-yuedushu" aria-hidden="true"><use xlink:href="#csdnc-m-passwords-visible"></use></svg>111</span></p></div></a><p class="content" style="width: 702px;"><a href="https://blog.csdn.net/liangfeng093/article/details/78709927" target="_blank" title="使用RecyclerView的ItemDecoration实现StickyHeader效果（笔记） - liangfeng093的博客"><span class="desc oneline">最近要做一个类似QQ浏览器的浏览记录效果就是下面的效果
QQ浏览器玩了半天，分析出了一点东西。
之前用ItemDecoration给RecyclerView绘制item过分割线…来自： liangfeng093的博客
<div class="recommend-item-box recommend-box-ident type_blog clearfix" data-track-view="{"mod":"popu_387","con":",https://blog.csdn.net/u011374875/article/details/51744496,BlogCommendFromBaidu_42,index_42"}" data-track-click="{"mod":"popu_387","con":",https://blog.csdn.net/u011374875/article/details/51744496,BlogCommendFromBaidu_42,index_42"}" data-flg="true"><div class="content" style="width: 702px;"><a href="https://blog.csdn.net/u011374875/article/details/51744496" target="_blank" title="StickHeaderItemDecoration--RecyclerView使用的固定头部装饰类 - CT的专栏"><h4 class="text-truncate oneline" style="width: 609px;">StickHeaderItemDecoration--<em>RecyclerView</em>使用的固定<em>头部</em>装饰类 - CT的专栏 </h4><div class="info-box d-flex align-content-center"><!-- <p class="avatar"><img src="https://avatar.csdn.net/B/9/4/3_u011374875.jpg" alt="u011374875" class="avatar-pic"><span class="namebox"><span class="name">u011374875</span><span class="triangle"></span></span></p> --><p class="date-and-readNum"><span class="date hover-show">06-23</span><span class="read-num hover-hide"><svg class="icon csdnc-yuedushu" aria-hidden="true"><use xlink:href="#csdnc-m-passwords-visible"></use></svg>1.1万</span></p></div></a><p class="content" style="width: 702px;"><a href="https://blog.csdn.net/u011374875/article/details/51744496" target="_blank" title="StickHeaderItemDecoration--RecyclerView使用的固定头部装饰类 - CT的专栏"><span class="desc oneline">StickHeaderItemDecoration是用于显示固定头部的item装饰类,扩展来自系统的ItemDecoration.本文参考了一部分sticky-headers-recyclerview...</span></a><span class="blog_title_box oneline"><a target="_blank" href="https://blog.csdn.net/u011374875">来自： <span class="blog_title"> CT的专栏</span></a></span></p></div></div><div class="recommend-item-box recommend-ad-box"><div id="kp_box_67" data-pid="67" data-track-view="{"mod":"kp_popu_67-658","con":",,"}" data-track-click="{"mod":"kp_popu_67-658","con":",,"}"><script type="text/javascript"> (function() {var s = "_" + Math.random().toString(36).slice(2);document.write('<div style="" id="' + s + '"></div>');(window.slotbydup = window.slotbydup || []).push({id: "u3573058",container: s}); })();id="iframeu3573058_0" src="https://pos.baidu.com/ucvm?conwid=852&conhei=60&rdid=3573058&dc=3&di=u3573058&dri=0&dis=0&dai=1&ps=6853x425&enu=encoding&dcb=___adblockplus&dtm=HTML_POST&dvi=0.0&dci=-1&dpt=none&tsr=0&tpr=1542785853339&ti=RecyclerView%20%E6%82%AC%E6%B5%AE%2F%E7%B2%98%E6%80%A7%E5%A4%B4%E9%83%A8%E2%80%94%E2%80%94StickyHeaderDecoration%20-%20%E5%87%B6%E6%AE%8B%E7%9A%84%E7%A8%8B%E5%BA%8F%E5%91%98%20-%20CSDN&ari=2&dbv=2&drs=1&pcs=1506x746&pss=1506x6906&cfv=0&cpl=3&chi=1&cce=true&cec=UTF-8&tlm=1542785853&prot=2&rw=746<u=https%3A%2F%2Fblog.csdn.net%2Fqian520ao%2Farticle%2Fdetails%2F76167193<r=https%3A%2F%2Fwww.baidu.com%2Flink%3Furl%3DNHRo77qKSwOYIfnU__sDBS3L3wqzz9jCtocl4seky11xxdoiSDBMch2sf9WzvxaWDLTIid0g9RTb2qN_lK7HbN2taCl_xR9a2tPRUTAQThS%26wd%3D%26eqid%3D961a4cc40000fa1b000000065bf50b32&ecd=1&uc=1536x824&pis=-1x-1&sr=1536x864&tcn=1542785853&qn=5e9eb4a6bad48992&tt=1542785852897.445.445.448" width="852" height="60" align="center,center" vspace="0" hspace="0" scrolling="no"><div class="recommend-item-box recommend-box-ident type_blog clearfix" data-track-view="{"mod":"popu_387","con":",https://blog.csdn.net/msquan/article/details/80270302,BlogCommendFromBaidu_43,index_43"}" data-track-click="{"mod":"popu_387","con":",https://blog.csdn.net/msquan/article/details/80270302,BlogCommendFromBaidu_43,index_43"}" data-flg="true"><div class="content" style="width: 702px;"><a href="https://blog.csdn.net/msquan/article/details/80270302" target="_blank" title="ItemDecoration固定头部(分组+分割线) - msquan的博客"><h4 class="text-truncate oneline" style="width: 626px;">ItemDecoration固定<em>头部</em>(分组+分割线) - msquan的博客 </h4><div class="info-box d-flex align-content-center"><!-- <p class="avatar"><img src="https://avatar.csdn.net/0/4/9/3_msquan.jpg" alt="msquan" class="avatar-pic"><span class="namebox"><span class="name">msquan</span><span class="triangle"></span></span></p> --><p class="date-and-readNum"><span class="date hover-show">05-10</span><span class="read-num hover-hide"><svg class="icon csdnc-yuedushu" aria-hidden="true"><use xlink:href="#csdnc-m-passwords-visible"></use></svg>69</span></p></div></a><p class="content" style="width: 702px;"><a href="https://blog.csdn.net/msquan/article/details/80270302" target="_blank" title="ItemDecoration固定头部(分组+分割线) - msquan的博客"><span class="desc oneline">参考资料：https://www.jianshu.com/p/b46a4ff7c10a先来张最终效果图具体说明代码注释有了，这里就不说了。public class BudgetContrastData...</span></a><span class="blog_title_box oneline"><a target="_blank" href="https://blog.csdn.net/msquan">来自： <span class="blog_title"> msquan的博客</span></a></span></p></div></div><div class="recommend-item-box recommend-box-ident type_blog clearfix" data-track-view="{"mod":"popu_387","con":",https://blog.csdn.net/yearningseeker/article/details/79709802,BlogCommendFromBaidu_44,index_44"}" data-track-click="{"mod":"popu_387","con":",https://blog.csdn.net/yearningseeker/article/details/79709802,BlogCommendFromBaidu_44,index_44"}" data-flg="true"><div class="content" style="width: 702px;"><a href="https://blog.csdn.net/yearningseeker/article/details/79709802" target="_blank" title="recyclerView中GridLayoutManager实现每一行不同布局的问题 - yearningseeker的博客"><h4 class="text-truncate oneline" style="width: 610px;"><em>recyclerView</em>中GridLayoutManager实现每一行不同布局的问题 - yearningseeker的博客 </h4><div class="info-box d-flex align-content-center"><!-- <p class="avatar"><img src="https://avatar.csdn.net/3/5/A/3_yearningseeker.jpg" alt="yearningseeker" class="avatar-pic"><span class="namebox"><span class="name">yearningseeker</span><span class="triangle"></span></span></p> --><p class="date-and-readNum"><span class="date hover-show">03-27</span><span class="read-num hover-hide"><svg class="icon csdnc-yuedushu" aria-hidden="true"><use xlink:href="#csdnc-m-passwords-visible"></use></svg>2780</span></p></div></a><p class="content" style="width: 702px;"><a href="https://blog.csdn.net/yearningseeker/article/details/79709802" target="_blank" title="recyclerView中GridLayoutManager实现每一行不同布局的问题 - yearningseeker的博客"><span class="desc oneline">标题看起来比较拗口啊，直接上图：项目需求：1.整个页面需要下拉刷新2.整个页面可滑动3.底部数据很多，需要上拉加载更多因为整个页面需要滑动，所以上面两个横条的内容不能写死，而且，两个横条的内容有时候也...</span></a><span class="blog_title_box oneline"><a target="_blank" href="https://blog.csdn.net/yearningseeker">来自： <span class="blog_title"> yearningseeker的博客</span></a></span></p></div></div><div class="recommend-item-box recommend-box-ident type_blog clearfix" data-track-view="{"mod":"popu_387","con":",https://blog.csdn.net/SilenceOO/article/details/77839683,BlogCommendFromBaidu_45,index_45"}" data-track-click="{"mod":"popu_387","con":",https://blog.csdn.net/SilenceOO/article/details/77839683,BlogCommendFromBaidu_45,index_45"}" data-flg="true"><div class="content" style="width: 702px;"><a href="https://blog.csdn.net/SilenceOO/article/details/77839683" target="_blank" title="RecyclerView实现顶部悬浮、字母排序、过滤搜索最优雅的方式 - PennTsui"><h4 class="text-truncate oneline" style="width: 610px;"><em>RecyclerView</em>实现顶部<em>悬浮</em>、字母排序、过滤搜索最优雅的方式 - PennTsui </h4><div class="info-box d-flex align-content-center"><!-- <p class="avatar"><img src="https://avatar.csdn.net/1/6/5/3_silenceoo.jpg" alt="SilenceOO" class="avatar-pic"><span class="namebox"><span class="name">SilenceOO</span><span class="triangle"></span></span></p> --><p class="date-and-readNum"><span class="date hover-show">09-04</span><span class="read-num hover-hide"><svg class="icon csdnc-yuedushu" aria-hidden="true"><use xlink:href="#csdnc-m-passwords-visible"></use></svg>6740</span></p></div></a><p class="content" style="width: 702px;"><a href="https://blog.csdn.net/SilenceOO/article/details/77839683" target="_blank" title="RecyclerView实现顶部悬浮、字母排序、过滤搜索最优雅的方式 - PennTsui"><span class="desc oneline">效果：这篇文章算是之前一篇的升级版，在上一篇的基础上新增了顶部悬停功能、波浪侧边栏和关于多音字的一个处理。
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