blocks|key|130694|text|您可以使用android:fillViewport="true"让NestedScrollView测量RecyclerView。RecyclerView将填充剩余的高度。因此，如果你想滚动NestScrollView，你可以设置RecyclerView的minHeight。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|130695|entityMap^0|5|R|X|G|1F|C|1S|C|2M|E|36|C|3J|9|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]|$9|Q|A|R|B|C]|$9|S|A|T|B|C]|$9|U|A|V|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|G|$]]

You can use <code>android:fillViewport="true"</code> to make <code>NestedScrollView</code> measure the <code>RecyclerView</code>. The <code>RecyclerView</code> will fill the remaining height. so if you want to scroll the <code>NestScrollView</code>, you can set the <code>RecyclerView</code>'s <code>minHeight</code>.

blocks|key|2696019|text|不能在嵌套滚动视图中使用回收器视图。它不打算包含更多的可滚动视图，但因为它是滚动布局本身的子级，所以您需要嵌套滚动视图。我也遇到了同样的问题，但最后我将我的文本视图移动到了recyclerview中，使recyclerview成为协调器布局的直接子视图，并删除了嵌套的滚动视图。然后我所有的问题都消失了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2696020|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

You can't use a recycler view within a nested scroll view. It's not intended to contain further scrollable views but it's because it's a child of a scrolling layout itself that you need the nested scrolling view. I had the same issue but in the end I moved my textview to be a headerview within the recyclerview, made the recyclerview a direct child of the coordinator layout and deleted the nested scroll view. Then all my problems were gone.

blocks|key|2908197|text|将您的recyclerView替换为，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2908198|<android.support.v7.widget.RecyclerView
++++android:id="@%2Bid/conversation"
++++app:layout_behavior="@string/appbar_scrolling_view_behavior"
++++android:layout_width="match_parent"
++++android:layout_height="wrap_content"+/>|code-block|syntax|javascript|2908199|这里,|2908200|app:layout_behavior="@string/appbar_scrolling_view_behavior"|2908201|将会管理剩下的事情。|2908202|还有一件事，不需要把你的recyclerView放在NestedScrollView里面|2908203|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Replace your recyclerView with, 

<pre><code>&lt;android.support.v7.widget.RecyclerView
 android:id="@+id/conversation"
 app:layout_behavior="@string/appbar_scrolling_view_behavior"
 android:layout_width="match_parent"
 android:layout_height="wrap_content" /&gt;
</code></pre>

here, 

<pre><code>app:layout_behavior="@string/appbar_scrolling_view_behavior"
</code></pre>

will manage the rest of things. 

One more thing, no need to put your recyclerView inside NestedScrollView

blocks|key|2696205|text|更新1|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2696206|从安卓支持库23.2.0开始，增加了针对LayoutManagers的方法setAutoMeasureEnabled(true)。它使得RecyclerView能够包装它的内容，工作起来就像一个护身符。|CODE|2696207|http://android-developers.blogspot.ru/2016/02/android-support-library-232.html|2696208|所以只需添加如下内容：|2696209|++++LayoutManager+layoutManager+=+new+LinearLayoutManager(this);
++++layoutManager.setAutoMeasureEnabled(true);
++++recyclerView.setLayoutManager(layoutManager);
++++recyclerView.setNestedScrollingEnabled(false);|code-block|syntax|javascript|2696210|更新2|2696211|由于27.1.0+setAutoMeasureEnabled已被弃用，因此您应该提供具有覆盖方法isAutoMeasureEnabled()的LayoutManager的自定义实现|2696212|但在多次使用RecyclerView之后，我强烈建议不要在包装模式下使用它，因为这不是它的目的。尝试使用具有多个项目类型的普通单个RecyclerView来重构整个布局。或者使用我在下面描述为最后手段的LinearLayout方法|2696213|旧答案(不推荐)|2696214|您可以在NestedScrollView中使用RecyclerView。首先，你应该实现你自己的自定义LinearLayoutManager，它使你的RecyclerView包装它的内容。例如：|2696215|public+class+WrappingLinearLayoutManager+extends+LinearLayoutManager
{

++++public+WrappingLinearLayoutManager(Context+context)+{
++++++++super(context);
++++}

++++private+int[]+mMeasuredDimension+=+new+int[2];

++++@Override
++++public+boolean+canScrollVertically()+{
++++++++return+false;
++++}

++++@Override
++++public+void+onMeasure(RecyclerView.Recycler+recycler,+RecyclerView.State+state,
++++++++++++int+widthSpec,+int+heightSpec)+{
++++++++final+int+widthMode+=+View.MeasureSpec.getMode(widthSpec);
++++++++final+int+heightMode+=+View.MeasureSpec.getMode(heightSpec);

++++++++final+int+widthSize+=+View.MeasureSpec.getSize(widthSpec);
++++++++final+int+heightSize+=+View.MeasureSpec.getSize(heightSpec);

++++++++int+width+=+0;
++++++++int+height+=+0;
++++++++for+(int+i+=+0;+i+<+getItemCount();+i%2B%2B)+{
++++++++++++if+(getOrientation()+==+HORIZONTAL)+{
++++++++++++++++measureScrapChild(recycler,+i,
++++++++++++++++++++++++View.MeasureSpec.makeMeasureSpec(0,+View.MeasureSpec.UNSPECIFIED),
++++++++++++++++++++++++heightSpec,
++++++++++++++++++++++++mMeasuredDimension);

++++++++++++++++width+=+width+%2B+mMeasuredDimension[0];
++++++++++++++++if+(i+==+0)+{
++++++++++++++++++++height+=+mMeasuredDimension[1];
++++++++++++++++}
++++++++++++}+else+{
++++++++++++++++measureScrapChild(recycler,+i,
++++++++++++++++++++++++widthSpec,
++++++++++++++++++++++++View.MeasureSpec.makeMeasureSpec(0,+View.MeasureSpec.UNSPECIFIED),
++++++++++++++++++++++++mMeasuredDimension);

++++++++++++++++height+=+height+%2B+mMeasuredDimension[1];
++++++++++++++++if+(i+==+0)+{
++++++++++++++++++++width+=+mMeasuredDimension[0];
++++++++++++++++}
++++++++++++}
++++++++}

++++++++switch+(widthMode)+{
++++++++++++case+View.MeasureSpec.EXACTLY:
++++++++++++++++width+=+widthSize;
++++++++++++case+View.MeasureSpec.AT_MOST:
++++++++++++case+View.MeasureSpec.UNSPECIFIED:
++++++++}

++++++++switch+(heightMode)+{
++++++++++++case+View.MeasureSpec.EXACTLY:
++++++++++++++++height+=+heightSize;
++++++++++++case+View.MeasureSpec.AT_MOST:
++++++++++++case+View.MeasureSpec.UNSPECIFIED:
++++++++}

++++++++setMeasuredDimension(width,+height);
++++}

++++private+void+measureScrapChild(RecyclerView.Recycler+recycler,+int+position,+int+widthSpec,
++++++++++++int+heightSpec,+int[]+measuredDimension)+{

++++++++View+view+=+recycler.getViewForPosition(position);
++++++++if+(view.getVisibility()+==+View.GONE)+{
++++++++++++measuredDimension[0]+=+0;
++++++++++++measuredDimension[1]+=+0;
++++++++++++return;
++++++++}
++++++++//+For+adding+Item+Decor+Insets+to+view
++++++++super.measureChildWithMargins(view,+0,+0);
++++++++RecyclerView.LayoutParams+p+=+(RecyclerView.LayoutParams)+view.getLayoutParams();
++++++++int+childWidthSpec+=+ViewGroup.getChildMeasureSpec(
++++++++++++++++widthSpec,
++++++++++++++++getPaddingLeft()+%2B+getPaddingRight()+%2B+getDecoratedLeft(view)+%2B+getDecoratedRight(view),
++++++++++++++++p.width);
++++++++int+childHeightSpec+=+ViewGroup.getChildMeasureSpec(
++++++++++++++++heightSpec,
++++++++++++++++getPaddingTop()+%2B+getPaddingBottom()+%2B+getDecoratedTop(view)+%2B+getDecoratedBottom(view),
++++++++++++++++p.height);
++++++++view.measure(childWidthSpec,+childHeightSpec);

++++++++//+Get+decorated+measurements
++++++++measuredDimension[0]+=+getDecoratedMeasuredWidth(view)+%2B+p.leftMargin+%2B+p.rightMargin;
++++++++measuredDimension[1]+=+getDecoratedMeasuredHeight(view)+%2B+p.bottomMargin+%2B+p.topMargin;
++++++++recycler.recycleView(view);
++++}
}|2696216|之后，为您的RecyclerView使用此LayoutManager|2696217|recyclerView.setLayoutManager(new+WrappingLinearLayoutManager(getContext()));|2696218|但您也应该调用这两个方法：|2696219|recyclerView.setNestedScrollingEnabled(false);
recyclerView.setHasFixedSize(false);|2696220|这里setNestedScrollingEnabled(false)禁用了RecyclerView的滚动，所以它不会截获来自NestedScrollView的滚动事件。并且setHasFixedSize(false)确定适配器内容的改变可以改变RecyclerView的大小|2696221|重要提示：此解决方案在某些情况下存在小错误，并存在性能问题，因此，如果您的RecyclerView中有很多项，我建议您使用列表视图的自定义LinearLayout-based实现，为其创建类似适配器，并使其行为类似于ListView或RecyclerView|2696222|entityMap|0|LINK|mutability|MUTABLE|url^0|0|3|0|11|R|0|0|26|0|0|0|0|0|3|0|9|L|1C|M|0|0|0|8|0|4|G|N|C|1F|J|23|C|0|0|6|C|L|D|0|0|0|0|2|W|11|C|1Q|G|2E|M|3E|C|0|0|5|11|C|1X|C|30|8|39|C|0^^$0|@$1|2|3|4|5|6|7|1M|8|@$9|1N|A|1O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1P|8|@$9|1Q|A|1R|B|H]]|D|@]|E|$]]|$1|I|3|J|5|6|7|1S|8|@]|D|@$9|1T|A|1U|1|1V]]|E|$]]|$1|K|3|L|5|6|7|1W|8|@]|D|@]|E|$]]|$1|M|3|N|5|O|7|1X|8|@]|D|@]|E|$P|Q]]|$1|R|3|S|5|6|7|1Y|8|@$9|1Z|A|20|B|C]]|D|@]|E|$]]|$1|T|3|U|5|6|7|21|8|@$9|22|A|23|B|H]|$9|24|A|25|B|H]]|D|@]|E|$]]|$1|V|3|W|5|6|7|26|8|@]|D|@]|E|$]]|$1|X|3|Y|5|6|7|27|8|@$9|28|A|29|B|C]]|D|@]|E|$]]|$1|Z|3|10|5|6|7|2A|8|@$9|2B|A|2C|B|H]|$9|2D|A|2E|B|H]|$9|2F|A|2G|B|H]|$9|2H|A|2I|B|H]]|D|@]|E|$]]|$1|11|3|12|5|O|7|2J|8|@]|D|@]|E|$P|Q]]|$1|13|3|14|5|6|7|2K|8|@$9|2L|A|2M|B|H]|$9|2N|A|2O|B|H]]|D|@]|E|$]]|$1|15|3|16|5|O|7|2P|8|@]|D|@]|E|$P|Q]]|$1|17|3|18|5|6|7|2Q|8|@]|D|@]|E|$]]|$1|19|3|1A|5|O|7|2R|8|@]|D|@]|E|$P|Q]]|$1|1B|3|1C|5|6|7|2S|8|@$9|2T|A|2U|B|H]|$9|2V|A|2W|B|H]|$9|2X|A|2Y|B|H]|$9|2Z|A|30|B|H]|$9|31|A|32|B|H]]|D|@]|E|$]]|$1|1D|3|1E|5|6|7|33|8|@$9|34|A|35|B|C]|$9|36|A|37|B|H]|$9|38|A|39|B|H]|$9|3A|A|3B|B|H]|$9|3C|A|3D|B|H]]|D|@]|E|$]]|$1|1F|3|-4|5|6|7|3E|8|@]|D|@]|E|$]]]|1G|$1H|$5|1I|1J|1K|E|$1L|J]]]]

UPDATE 1

Since Android Support Library 23.2.0 there were added method <code>setAutoMeasureEnabled(true)</code> for LayoutManagers. It makes RecyclerView to wrap it's content and works like a charm. 
<a href="http://android-developers.blogspot.ru/2016/02/android-support-library-232.html" rel="noreferrer">http://android-developers.blogspot.ru/2016/02/android-support-library-232.html</a>

So just add something like this:

<pre><code> LayoutManager layoutManager = new LinearLayoutManager(this);
 layoutManager.setAutoMeasureEnabled(true);
 recyclerView.setLayoutManager(layoutManager);
 recyclerView.setNestedScrollingEnabled(false);
</code></pre>

 
UPDATE 2

Since 27.1.0 <code>setAutoMeasureEnabled</code> is deprecated, so you should provide custom implementation of LayoutManager with overridden method <code>isAutoMeasureEnabled()</code>

But after many cases of usage RecyclerView I strongly recommend not to use it in wrapping mode, cause this is not what it is intended for. Try to refactor whole your layout using normal single RecyclerView with several items' types. Or use approach with LinearLayout that I described below as last resort

 
Old answer (not recommended)

You can use <code>RecyclerView</code> inside <code>NestedScrollView</code>.
First of all you should implement your own custom <code>LinearLayoutManager</code>, it makes your <code>RecyclerView</code> to wrap its content. 
For example:

<pre><code>public class WrappingLinearLayoutManager extends LinearLayoutManager
{

 public WrappingLinearLayoutManager(Context context) {
 super(context);
 }

 private int[] mMeasuredDimension = new int[2];

 @Override
 public boolean canScrollVertically() {
 return false;
 }

 @Override
 public void onMeasure(RecyclerView.Recycler recycler, RecyclerView.State state,
 int widthSpec, int heightSpec) {
 final int widthMode = View.MeasureSpec.getMode(widthSpec);
 final int heightMode = View.MeasureSpec.getMode(heightSpec);

 final int widthSize = View.MeasureSpec.getSize(widthSpec);
 final int heightSize = View.MeasureSpec.getSize(heightSpec);

 int width = 0;
 int height = 0;
 for (int i = 0; i &lt; getItemCount(); i++) {
 if (getOrientation() == HORIZONTAL) {
 measureScrapChild(recycler, i,
 View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),
 heightSpec,
 mMeasuredDimension);

 width = width + mMeasuredDimension[0];
 if (i == 0) {
 height = mMeasuredDimension[1];
 }
 } else {
 measureScrapChild(recycler, i,
 widthSpec,
 View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),
 mMeasuredDimension);

 height = height + mMeasuredDimension[1];
 if (i == 0) {
 width = mMeasuredDimension[0];
 }
 }
 }

 switch (widthMode) {
 case View.MeasureSpec.EXACTLY:
 width = widthSize;
 case View.MeasureSpec.AT_MOST:
 case View.MeasureSpec.UNSPECIFIED:
 }

 switch (heightMode) {
 case View.MeasureSpec.EXACTLY:
 height = heightSize;
 case View.MeasureSpec.AT_MOST:
 case View.MeasureSpec.UNSPECIFIED:
 }

 setMeasuredDimension(width, height);
 }

 private void measureScrapChild(RecyclerView.Recycler recycler, int position, int widthSpec,
 int heightSpec, int[] measuredDimension) {

 View view = recycler.getViewForPosition(position);
 if (view.getVisibility() == View.GONE) {
 measuredDimension[0] = 0;
 measuredDimension[1] = 0;
 return;
 }
 // For adding Item Decor Insets to view
 super.measureChildWithMargins(view, 0, 0);
 RecyclerView.LayoutParams p = (RecyclerView.LayoutParams) view.getLayoutParams();
 int childWidthSpec = ViewGroup.getChildMeasureSpec(
 widthSpec,
 getPaddingLeft() + getPaddingRight() + getDecoratedLeft(view) + getDecoratedRight(view),
 p.width);
 int childHeightSpec = ViewGroup.getChildMeasureSpec(
 heightSpec,
 getPaddingTop() + getPaddingBottom() + getDecoratedTop(view) + getDecoratedBottom(view),
 p.height);
 view.measure(childWidthSpec, childHeightSpec);

 // Get decorated measurements
 measuredDimension[0] = getDecoratedMeasuredWidth(view) + p.leftMargin + p.rightMargin;
 measuredDimension[1] = getDecoratedMeasuredHeight(view) + p.bottomMargin + p.topMargin;
 recycler.recycleView(view);
 }
}
</code></pre>

After that use this <code>LayoutManager</code> for your <code>RecyclerView</code>

<pre><code>recyclerView.setLayoutManager(new WrappingLinearLayoutManager(getContext()));
</code></pre>

But you also should call those two methods:

<pre><code>recyclerView.setNestedScrollingEnabled(false);
recyclerView.setHasFixedSize(false);
</code></pre>

Here <code>setNestedScrollingEnabled(false)</code> disable scrolling for <code>RecyclerView</code>, so it doesn't intercept scrolling event from <code>NestedScrollView</code>. And <code>setHasFixedSize(false)</code> determine that changes in adapter content can change the size of the <code>RecyclerView</code>

Important note: This solution is little buggy in some cases and has problems with perfomance, so if you have a lot of items in your <code>RecyclerView</code> I'd recommend to use custom <code>LinearLayout</code>-based implementation of list view, create analogue of Adapter for it and make it behave like <code>ListView</code> or <code>RecyclerView</code>

blocks|key|2908346|text|尝试使用这个库-+https://github.com/serso/android-linear-layout-manager。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2908347|库的LayoutManager使RecyclerView包装了它的内容。在这种情况下，RecyclerView将“与内部视图一样大”，因此它将不会有滚动条，用户将使用NestedScrollView的滚动功能。因此，它不会像"scrollable+inside+scrollable“那样模棱两可。|2908348|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/serso/android-linear-layout-manager^0|9|1I|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

Try to use this library - <a href="https://github.com/serso/android-linear-layout-manager" rel="noreferrer">https://github.com/serso/android-linear-layout-manager</a>.

LayoutManager of the library makes RecyclerView wraps its contents. In this case RecyclerView will be "as big as inner views", so it will not have a scrollbars and user will use scrolling abilities of NestedScrollView. Therefore, it will not be ambiguous like "scrollable inside scrollable".

blocks|key|133943|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|133944|您需要使用|ordered-list-item|133945|上的支持库23.2.0+(或)|133946|高度为wrap_content.的|offset|length|style|CODE|133947|和RecyclerView|133948|133949|133950|recyclerView.setNestedScrollingEnabled(false)|133951|133952|但是这样做，回收器模式就不起作用了，。(也就是说，所有的视图将被一次加载，因为wrap_content需要完整的RecyclerView的高度，所以它将一次绘制所有子Views。不会回收任何视图)。除非确实需要，否则请尽量不要使用此模式。尝试使用viewType并添加需要滚动到RecyclerView的所有其他视图，而不是在Scrollview中使用RecyclerView。这对性能的影响将非常大。|BOLD|133953|为了简单起见，“它只是充当所有子视图的LinearLayout”。|133954|entityMap^0|0|0|0|3|C|0|1|C|0|0|0|0|19|0|0|P|B|13|C|1K|C|2B|5|3F|8|3V|C|4J|A|4W|C|0|J|C|0^^$0|@$1|2|3|-4|4|5|6|Z|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|10|7|@]|8|@]|9|$]]|$1|D|3|E|4|5|6|11|7|@]|8|@]|9|$]]|$1|F|3|G|4|5|6|12|7|@$H|13|I|14|J|K]]|8|@]|9|$]]|$1|L|3|M|4|C|6|15|7|@$H|16|I|17|J|K]]|8|@]|9|$]]|$1|N|3|-4|4|5|6|18|7|@]|8|@]|9|$]]|$1|O|3|-4|4|5|6|19|7|@]|8|@]|9|$]]|$1|P|3|Q|4|C|6|1A|7|@$H|1B|I|1C|J|K]]|8|@]|9|$]]|$1|R|3|-4|4|5|6|1D|7|@]|8|@]|9|$]]|$1|S|3|T|4|5|6|1E|7|@$H|1F|I|1G|J|U]|$H|1H|I|1I|J|K]|$H|1J|I|1K|J|K]|$H|1L|I|1M|J|K]|$H|1N|I|1O|J|K]|$H|1P|I|1Q|J|K]|$H|1R|I|1S|J|K]|$H|1T|I|1U|J|K]]|8|@]|9|$]]|$1|V|3|W|4|5|6|1V|7|@$H|1W|I|1X|J|K]]|8|@]|9|$]]|$1|X|3|-4|4|5|6|1Y|7|@]|8|@]|9|$]]]|Y|$]]

<ol>
<li>You need to use support library 23.2.0 (or) above
</li>
<li>and <code>RecyclerView</code> height will be <code>wrap_content</code>.
</li>
<li><code>recyclerView.setNestedScrollingEnabled(false)</code>
</li>
</ol>
But by doing this the recycler pattern doesn't work. (i.e all the views will be loaded at once because <code>wrap_content</code> needs the height of complete <code>RecyclerView</code> so it will draw all child <code>Views</code> at once. No view will be recycled). Try not to use this pattern unless it is really required. Try to use <code>viewType</code> and add all other views that need to scroll to <code>RecyclerView</code> rather than using <code>RecyclerView</code> in <code>Scrollview</code>. The performance impact will be very high.
To make it simple &quot;it just acts as <code>LinearLayout</code> with all the child views&quot;

blocks|key|131666|text|这就是我的工作，|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|131667|<android.support.v4.widget.NestedScrollView
++++android:layout_width="match_parent"
++++android:layout_height="match_parent"
++++android:fillViewport="true"
++++app:layout_behavior="@string/appbar_scrolling_view_behavior">

++++<android.support.v7.widget.RecyclerView
++++++++android:id="@%2Bid/rv_recycler_view"
++++++++android:layout_width="match_parent"
++++++++android:layout_height="wrap_content"
++++++++app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
</android.support.v4.widget.NestedScrollView>|code-block|syntax|javascript|131668|entityMap^0|0|8|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

This is what working for me

<pre><code>&lt;android.support.v4.widget.NestedScrollView
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:fillViewport="true"
 app:layout_behavior="@string/appbar_scrolling_view_behavior"&gt;

 &lt;android.support.v7.widget.RecyclerView
 android:id="@+id/rv_recycler_view"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 app:layout_behavior="@string/appbar_scrolling_view_behavior"/&gt;
&lt;/android.support.v4.widget.NestedScrollView&gt;
</code></pre>

blocks|key|133314|text|对我来说，在setAdapter之前简单地添加recyclerView.setNestedScrollingEnabled(false);就行了。我没有添加app:layout_behavior="@string/appbar_scrolling_view_behavior"+anywhere，也没有设置任何自定义布局管理器|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|133315|<android.support.v4.widget.NestedScrollView+xmlns:android="http://schemas.android.com/apk/res/android"
++++android:layout_width="match_parent"
++++android:layout_height="match_parent">

++++<LinearLayout
++++++++android:layout_width="match_parent"
++++++++android:layout_height="match_parent"
++++++++android:background="@color/white"
++++++++android:orientation="vertical">

++++++++<LinearLayout
++++++++++++android:layout_width="match_parent"
++++++++++++android:layout_height="wrap_content"
++++++++++++android:layout_marginLeft="15dp"
++++++++++++android:layout_marginRight="15dp"
++++++++++++android:orientation="vertical">

++++++++++++<TextView
++++++++++++++++android:layout_width="match_parent"
++++++++++++++++android:layout_height="wrap_content"
++++++++++++++++android:textColor="@color/white"
++++++++++++++++android:text="Some+Text..."
++++++++++++++++android:padding="15dp"+/>

++++++++</LinearLayout>

++++++++<LinearLayout
++++++++++++android:orientation="vertical"
++++++++++++android:padding="15dp"
++++++++++++android:layout_marginTop="10dp"
++++++++++++android:layout_width="match_parent"
++++++++++++android:layout_height="wrap_content">

++++++++++++<TextView
++++++++++++++++android:layout_width="match_parent"
++++++++++++++++android:layout_height="wrap_content"
++++++++++++++++android:text="Quick+Links"
++++++++++++++++android:textColor="@color/black"
++++++++++++++++android:textStyle="bold"
++++++++++++++++android:textAllCaps="true"
++++++++++++++++android:paddingLeft="20dp"
++++++++++++++++android:drawableLeft="@drawable/ic_trending_up_black_24dp"
++++++++++++++++android:drawablePadding="10dp"
++++++++++++++++android:layout_marginBottom="10dp"
++++++++++++++++android:textSize="16sp"/>

++++++++++++<View
++++++++++++++++android:layout_width="fill_parent"
++++++++++++++++android:layout_height="1dp"
++++++++++++++++android:background="#efefef"/>

++++++++++++<android.support.v7.widget.RecyclerView+xmlns:android="http://schemas.android.com/apk/res/android"
++++++++++++++++android:id="@%2Bid/recyclerview"
++++++++++++++++android:layout_width="match_parent"
++++++++++++++++android:layout_height="match_parent"+/>
++++++++</LinearLayout>

++++</LinearLayout>

</android.support.v4.widget.NestedScrollView>|code-block|syntax|javascript|133316|entityMap^0|6|A|N|1A|26|1O|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|U|8|@]|D|@]|E|$]]]|L|$]]

Simply adding <code>recyclerView.setNestedScrollingEnabled(false);</code> before <code>setAdapter</code> itself worked for me. I didn't add <code>app:layout_behavior="@string/appbar_scrolling_view_behavior"</code> anywhere &amp; didn't set any custom layout manager

<pre><code>&lt;android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent"&gt;

 &lt;LinearLayout
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:background="@color/white"
 android:orientation="vertical"&gt;

 &lt;LinearLayout
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:layout_marginLeft="15dp"
 android:layout_marginRight="15dp"
 android:orientation="vertical"&gt;

 &lt;TextView
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:textColor="@color/white"
 android:text="Some Text..."
 android:padding="15dp" /&gt;

 &lt;/LinearLayout&gt;

 &lt;LinearLayout
 android:orientation="vertical"
 android:padding="15dp"
 android:layout_marginTop="10dp"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"&gt;

 &lt;TextView
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="Quick Links"
 android:textColor="@color/black"
 android:textStyle="bold"
 android:textAllCaps="true"
 android:paddingLeft="20dp"
 android:drawableLeft="@drawable/ic_trending_up_black_24dp"
 android:drawablePadding="10dp"
 android:layout_marginBottom="10dp"
 android:textSize="16sp"/&gt;

 &lt;View
 android:layout_width="fill_parent"
 android:layout_height="1dp"
 android:background="#efefef"/&gt;

 &lt;android.support.v7.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
 android:id="@+id/recyclerview"
 android:layout_width="match_parent"
 android:layout_height="match_parent" /&gt;
 &lt;/LinearLayout&gt;

 &lt;/LinearLayout&gt;

&lt;/android.support.v4.widget.NestedScrollView&gt;
</code></pre>

blocks|key|2908375|text|如果使用的是RecyclerView-23.2.1或更高版本。下面的解决方案将会工作得很好：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2908376|在您的布局中添加RecyclerView，如下所示：|2908377|<android.support.v7.widget.RecyclerView
++++++++android:id="@%2Bid/review_list"
++++++++android:layout_width="match_parent"
++++++++android:layout_height="wrap_content"
++++++++android:scrollbars="vertical"+/>|code-block|syntax|javascript|2908378|在你的java文件中：|2908379|RecyclerView+mRecyclerView+=+(RecyclerView)+view.findViewById(R.id.recyclerView);
LinearLayoutManager+layoutManager=new+LinearLayoutManager(getContext());
layoutManager.setAutoMeasureEnabled(true);
mRecyclerView.setLayoutManager(layoutManager);
mRecyclerView.setHasFixedSize(true);
mRecyclerView.setAdapter(new+YourListAdapter(getContext()));|2908380|在这里，layoutManager.setAutoMeasureEnabled(true);将完成这项工作。|2908381|有关更多信息，请查看this+issue和this+developer+blog。|2908382|entityMap|0|LINK|mutability|MUTABLE|url|https://code.google.com/p/android/issues/detail?id=202413|1|http://android-developers.blogspot.in/2016/02/android-support-library-232.html^0|6|J|0|0|0|0|0|4|16|0|A|A|0|L|J|1|0^^$0|@$1|2|3|4|5|6|7|14|8|@$9|15|A|16|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|17|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|18|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|19|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|1A|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|1B|8|@$9|1C|A|1D|B|C]]|D|@]|E|$]]|$1|S|3|T|5|6|7|1E|8|@]|D|@$9|1F|A|1G|1|1H]|$9|1I|A|1J|1|1K]]|E|$]]|$1|U|3|-4|5|6|7|1L|8|@]|D|@]|E|$]]]|V|$W|$5|X|Y|Z|E|$10|11]]|12|$5|X|Y|Z|E|$10|13]]]]

If you are using <code>RecyclerView-23.2.1</code> or later. Following solution will work just fine: 

In your layout add RecyclerView like this:

<pre><code>&lt;android.support.v7.widget.RecyclerView
 android:id="@+id/review_list"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:scrollbars="vertical" /&gt;
</code></pre>

And in your java file:

<pre><code>RecyclerView mRecyclerView = (RecyclerView) view.findViewById(R.id.recyclerView);
LinearLayoutManager layoutManager=new LinearLayoutManager(getContext());
layoutManager.setAutoMeasureEnabled(true);
mRecyclerView.setLayoutManager(layoutManager);
mRecyclerView.setHasFixedSize(true);
mRecyclerView.setAdapter(new YourListAdapter(getContext()));
</code></pre>

Here <code>layoutManager.setAutoMeasureEnabled(true);</code> will do the trick. 

Check out <a href="https://code.google.com/p/android/issues/detail?id=202413" rel="nofollow">this issue</a> and <a href="http://android-developers.blogspot.in/2016/02/android-support-library-232.html" rel="nofollow">this developer blog</a> for more information.

blocks|key|133964|text|有一个简单的测试代码，你可以检查|type|unstyled|depth|inlineStyleRanges|entityRanges|data|133965|<android.support.v4.widget.NestedScrollView
+++++android:layout_width="match_parent"
+++++android:layout_height="match_parent"
+++++android:fillViewport="true"
+++++app:layout_behavior="@string/appbar_scrolling_view_behavior">
++++<android.support.v7.widget.RecyclerView
+++++++++++android:layout_width="match_parent"
+++++++++++android:layout_height="match_parent"/>
+++</android.support.v4.widget.NestedScrollView>|code-block|syntax|javascript|133966|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

There is a simple and testing code u may check

<pre><code>&lt;android.support.v4.widget.NestedScrollView
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:fillViewport="true"
 app:layout_behavior="@string/appbar_scrolling_view_behavior"&gt;
 &lt;android.support.v7.widget.RecyclerView
 android:layout_width="match_parent"
 android:layout_height="match_parent"/&gt;
 &lt;/android.support.v4.widget.NestedScrollView&gt;
</code></pre>

blocks|key|2908393|text|我在NestedScrollView里面有Viewpager和RecyclerView。添加以下行后|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2908394|recyclerView.setNestedScrollingEnabled(false);
recyclerView.setHasFixedSize(false);|code-block|syntax|javascript|2908395|我解决了慢滚动和滚动延迟的问题。|2908396|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I have Viewpager and RecyclerView inside the NestedScrollView. After adding below lines

<pre><code>recyclerView.setNestedScrollingEnabled(false);
recyclerView.setHasFixedSize(false);
</code></pre>

I solved slow scroll and scroll lag issue.

blocks|key|133338|text|我不得不实现带有工具栏滚动的CoordinatorLayout，这让我花了一整天的时间来解决这个问题。我已经通过移除NestedScrollView让它工作了。所以我只是在根目录下使用RelativeLayout。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|133339|<?xml+version="1.0"+encoding="utf-8"?>
<RelativeLayout+xmlns:android="http://schemas.android.com/apk/res/android"
++++xmlns:app="http://schemas.android.com/apk/res-auto"
++++android:layout_width="match_parent"
++++android:layout_height="match_parent">

++++++++<android.support.v7.widget.RecyclerView
++++++++++++android:id="@%2Bid/rv_nearby"
++++++++++++android:layout_width="match_parent"
++++++++++++android:layout_height="match_parent"
++++++++++++app:layout_behavior="@string/appbar_scrolling_view_behavior"+/>

</RelativeLayout>|code-block|syntax|javascript|133340|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I had to implement CoordinatorLayout with toolbar scrolling and it just took me all the day messing around this. I've got it working by removing NestedScrollView at all. So I'm just using RelativeLayout at the root.

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto"
 android:layout_width="match_parent"
 android:layout_height="match_parent"&gt;

 &lt;android.support.v7.widget.RecyclerView
 android:id="@+id/rv_nearby"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 app:layout_behavior="@string/appbar_scrolling_view_behavior" /&gt;

&lt;/RelativeLayout&gt;
</code></pre>

blocks|key|2908409|text|下面是我用来避免滚动问题的代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2908410|mRecyclerView+=+(RecyclerView)+view.findViewById(android.R.id.list);
mRecyclerView.setLayoutManager(new+LinearLayoutManager(getContext()));
mRecyclerView.getLayoutManager().setAutoMeasureEnabled(true);
mRecyclerView.setNestedScrollingEnabled(false);
mRecyclerView.setHasFixedSize(false);|code-block|syntax|javascript|2908411|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Here is the code that I'm using to avoid scrolling issues:

<pre><code>mRecyclerView = (RecyclerView) view.findViewById(android.R.id.list);
mRecyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
mRecyclerView.getLayoutManager().setAutoMeasureEnabled(true);
mRecyclerView.setNestedScrollingEnabled(false);
mRecyclerView.setHasFixedSize(false);
</code></pre>

blocks|key|131716|text|我在NestedScrollView中使用了RecyclerView，它对我很有效。我必须牢记的唯一问题是NestedScrollView只接受一个子视图。因此，在我的例子中，我使用了LienearLayout视图组，它包含了我的RecyclerView，以及我需要的许多其他视图。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|131717|我在将RecyclerView放入NestedScrollView时遇到了一个问题。我意识到，滚动我的RecyclerView的内容是懒惰的。|131718|后来我意识到我的RecyclerView正在接收滚动事件，因此与NestedScrollView的滚动行为冲突。|131719|因此，为了解决这个问题，我不得不使用movieListNewRecyclerView.setNestedScrollingEnabled(false);方法禁用RecyclerView的滚动功能|CODE|131720|你可以在我的Instagram上看一段我实际做了什么的短视频。这是我的instagram账号ofelix03|131721|​|131722|📷|atomic|131723|131724|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/90e7d478569d9163d98b3f1ac7e32e83.png|imageAlt^0|2|G|M|C|0|0|0|I|1M|0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|13|8|@$9|14|A|15|B|C]|$9|16|A|17|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|18|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|19|8|@]|D|@]|E|$]]|$1|J|3|K|5|6|7|1A|8|@$9|1B|A|1C|B|L]]|D|@]|E|$]]|$1|M|3|N|5|6|7|1D|8|@]|D|@]|E|$]]|$1|O|3|P|5|6|7|1E|8|@]|D|@]|E|$]]|$1|Q|3|R|5|S|7|1F|8|@]|D|@$9|1G|A|1H|1|1I]]|E|$]]|$1|T|3|P|5|6|7|1J|8|@]|D|@]|E|$]]|$1|U|3|-4|5|6|7|1K|8|@]|D|@]|E|$]]]|V|$W|$5|X|Y|Z|E|$10|11|12|-4]]]]

I used RecyclerView inside a NestedScrollView and it worked for me. The only gotcha I had to keep in mind was that a NestedScrollView takes only one child view. So in my case I used of LienearLayout viewgroup which was housing my RecyclerView plus a number of other views that I needed.
I experience one issue putting my RecyclerView inside the NestedScrollView. I realized that scrolling the content of my RecyclerView slacked.
I later realized that my RecyclerView was receiving the scrolling event and therefore was conflicting with the scrolling behavior of the NestedScrollView.
So to solve that problem, I had to disable the scroll functionality of my RecyclerView with this method <code>movieListNewRecyclerView.setNestedScrollingEnabled(false);</code>
You can checkout my Instagram for a short video of what I actually did. This is my instagram handle ofelix03
<img src="https://i.stack.imgur.com/jZak3.png" alt="Click this image to see what I did" />

blocks|key|2908514|text|使用NestedScrollView的RecyclerView|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2908515|++++<android.support.v7.widget.RecyclerView
++++android:id="@%2Bid/rv"
++++android:layout_width="match_parent"
++++android:layout_height="match_parent"
++++app:layout_behavior="@string/appbar_scrolling_view_behavior"+/>|code-block|syntax|javascript|2908516|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<h2>RecyclerView with NestedScrollView</h2>

<pre><code> &lt;android.support.v7.widget.RecyclerView
 android:id="@+id/rv"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 app:layout_behavior="@string/appbar_scrolling_view_behavior" /&gt;
</code></pre>

blocks|key|133384|text|保留回收视图的回收功能并避免回收视图加载所有数据的一种解决方案是在回收视图本身中设置固定高度。通过这样做，recyclerview只能加载其高度可以显示给用户的内容，因此，如果您滚动到底部/顶部，就可以回收其元素。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|133385|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

One solution to keep the recycling feature of the recyclerview and avoiding the recyclerview to load all your data is setting a fix height in the recyclerview itself. By doing this the recyclerview is limited only to load as much as its height can show the user thus recycling its element if ever you scroll to the bottom/top.

blocks|key|2908562|text|有很多好的答案。关键是您必须将nestedScrollingEnabled设置为false。如上所述，您可以在java代码中完成此操作：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2908563|mRecyclerView.setNestedScrollingEnabled(false);|code-block|syntax|javascript|2908564|但是您也有机会在xml代码(android:nestedScrollingEnabled="false")中设置相同的属性：|2908565|+<android.support.v7.widget.RecyclerView
+++++android:id="@%2Bid/recyclerview"
+++++android:nestedScrollingEnabled="false"
+++++android:layout_width="match_parent"
+++++android:layout_height="match_parent"+/>|2908566|entityMap^0|F|M|14|5|0|0|E|12|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|P|$]]

There are a lot of good answers. The key is that you must set <code>nestedScrollingEnabled</code> to <code>false</code>. As mentioned above you can do it in java code:
<pre><code>mRecyclerView.setNestedScrollingEnabled(false);
</code></pre>
But also you have an opportunity to set the same property in xml code (<code>android:nestedScrollingEnabled=&quot;false&quot;</code>):
<pre><code> &lt;android.support.v7.widget.RecyclerView
 android:id=&quot;@+id/recyclerview&quot;
 android:nestedScrollingEnabled=&quot;false&quot;
 android:layout_width=&quot;match_parent&quot;
 android:layout_height=&quot;match_parent&quot; /&gt;
</code></pre>

blocks|key|2908578|text|对于androidx，它被称为androidx.core.widget.NestedScrollView+-而且它的滚动类似于启用了isScrollContainer和measureAllChildren属性的黄油：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2908579|
<androidx.core.widget.NestedScrollView
++++android:layout_width="match_parent"
++++android:layout_height="wrap_content"

++++android:isScrollContainer="true"
++++android:measureAllChildren="true"

++++app:layout_behavior="@string/appbar_scrolling_view_behavior">

++++<androidx.recyclerview.widget.RecyclerView
++++++++android:id="@%2Bid/recyclerview"
++++++++android:layout_width="match_parent"
++++++++android:layout_height="match_parent"
++++++++android:fastScrollEnabled="true"
++++++++android:scrollbarStyle="insideInset"
++++++++android:scrollbars="vertical"
++++++++android:splitMotionEvents="false"
++++++++android:verticalScrollbarPosition="right"/>

</androidx.core.widget.NestedScrollView>|code-block|syntax|javascript|2908580|entityMap^0|2|8|F|11|1U|H|2C|I|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]|$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|L|$]]

For <code>androidx</code> it's called <code>androidx.core.widget.NestedScrollView</code> - and it scrolls alike butter with properties <code>isScrollContainer</code> and <code>measureAllChildren</code> enabled:
<pre><code>&lt;!-- Scrolling Content --&gt;
&lt;androidx.core.widget.NestedScrollView
 android:layout_width=&quot;match_parent&quot;
 android:layout_height=&quot;wrap_content&quot;

 android:isScrollContainer=&quot;true&quot;
 android:measureAllChildren=&quot;true&quot;

 app:layout_behavior=&quot;@string/appbar_scrolling_view_behavior&quot;&gt;

 &lt;androidx.recyclerview.widget.RecyclerView
 android:id=&quot;@+id/recyclerview&quot;
 android:layout_width=&quot;match_parent&quot;
 android:layout_height=&quot;match_parent&quot;
 android:fastScrollEnabled=&quot;true&quot;
 android:scrollbarStyle=&quot;insideInset&quot;
 android:scrollbars=&quot;vertical&quot;
 android:splitMotionEvents=&quot;false&quot;
 android:verticalScrollbarPosition=&quot;right&quot;/&gt;

&lt;/androidx.core.widget.NestedScrollView&gt;
</code></pre>

blocks|key|2908672|text|在NestedScrollView，RecyclerView+listener中使用+addOnScrollListener+ScrollListener时，如果同时使用两者，则无法正常工作。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2908673|使用此代码。|2908674|recyclerView.addOnScrollListener(new+RecyclerView.OnScrollListener()+{
++++++++@Override
++++++++public+void+onScrollStateChanged(@NonNull+RecyclerView+recyclerView,+int+newState)+{
++++++++++++super.onScrollStateChanged(recyclerView,+newState);+
++++++++++++++......
++++++++}
++++});|code-block|syntax|javascript|2908675|此代码在NestedScrollView.中的RecyclerView+ScrollListener中运行良好|2908676|谢谢|2908677|entityMap^0|1|G|16|Z|0|0|0|4|G|N|R|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|Y|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|Z|8|@$9|10|A|11|B|C]|$9|12|A|13|B|C]]|D|@]|E|$]]|$1|O|3|P|5|6|7|14|8|@]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|R|$]]

If you are using RecyclerView ScrollListener inside NestedScrollView, addOnScrollListener listener not working properly if you are used both.

Use this code. 

<pre><code>recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
 @Override
 public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
 super.onScrollStateChanged(recyclerView, newState); 
 ......
 }
 });
</code></pre>

this code working fine RecyclerView ScrollListener inside NestedScrollView.

thanks

blocks|key|2696594|text|不要在NestedScrollView中使用recyclerView。它可能会导致级联问题！我建议在RecyclerView中使用ItemViewTypes来处理多种视图。只需添加一个具有match_parent宽度和高度的RecyclerView。然后在你的recyclerViewAdapter中重写getItemViewType并使用position来处理要膨胀的布局。在此之后，您可以使用onBindViewHolder方法处理您的视图管理器。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2696595|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

do not use recyclerView inside NestedScrollView. it may cause cascading problems!
I suggest using ItemViewTypes in RecyclerView for handling multiple kinds of views.
just add a RecyclerView with match_parent width and height. then in your recyclerViewAdapter override getItemViewType and use position for handling what layout to be inflated. after that you can handle your view holder by using onBindViewHolder method.

blocks|key|131081|text|nestedScrollView.setNestedScrollingEnabled(true);

mRecyclerView.addOnScrollListener(new+RecyclerView.OnScrollListener()+{
++++++++@Override
++++++++public+void+onScrolled(RecyclerView+recyclerView,+int+dx,+int+dy)+{
++++++++++++super.onScrolled(recyclerView,+dx,+dy);
++++++++++++//...
++++++++}
++++});


<androidx.core.widget.NestedScrollView
++++android:id="@%2Bid/nested"
++++android:layout_width="match_parent"
++++android:layout_height="match_parent"
++++android:fillViewport="true"
++++android:layout_below="@id/appBarLayout_orders"
++++app:layout_behavior="@string/appbar_scrolling_view_behavior">+

++++<androidx.constraintlayout.widget.ConstraintLayout+...

++++++++<androidx.recyclerview.widget.RecyclerView
++++++++++++android:id="@%2Bid/recycler"
++++++++++++android:layout_width="match_parent"
++++++++++++android:layout_height="0dp"
++++++++++++app:layout_constraintTop_toTopOf="parent"
++++++++++++app:layout_constraintBottom_toBottomOf="parent"/>|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|131082|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>nestedScrollView.setNestedScrollingEnabled(true);

mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
 @Override
 public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
 super.onScrolled(recyclerView, dx, dy);
 //...
 }
 });


&lt;androidx.core.widget.NestedScrollView
 android:id="@+id/nested"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:fillViewport="true"
 android:layout_below="@id/appBarLayout_orders"
 app:layout_behavior="@string/appbar_scrolling_view_behavior"&gt; 

 &lt;androidx.constraintlayout.widget.ConstraintLayout ...

 &lt;androidx.recyclerview.widget.RecyclerView
 android:id="@+id/recycler"
 android:layout_width="match_parent"
 android:layout_height="0dp"
 app:layout_constraintTop_toTopOf="parent"
 app:layout_constraintBottom_toBottomOf="parent"/&gt;
</code></pre>

blocks|key|2908759|text|我用过这个很棒的扩展(用kotlin写的，但也可以用Java)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2908760|https://github.com/Widgetlabs/expedition-nestedscrollview|offset|length|2908761|基本上，您可以在任何包中获取NestedRecyclerView，比如项目中的utils，然后创建回收视图，如下所示|style|CODE|2908762|+<com.your_package.utils.NestedRecyclerView
++++++android:id="@%2Bid/rv_test"
++++++android:layout_width="match_parent"
++++++android:layout_height="match_parent"+/>|code-block|syntax|javascript|2908763|看看这篇由Marc+Knaup写的很棒的文章|2908764|https://medium.com/widgetlabs-engineering/scrollable-nestedscrollviews-inside-recyclerview-ca65050d828a|2908765|entityMap|0|LINK|mutability|MUTABLE|url|1^0|0|0|1L|0|0|E|I|0|0|0|0|2V|1|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|11|8|@]|9|@$D|12|E|13|1|14]]|A|$]]|$1|F|3|G|5|6|7|15|8|@$D|16|E|17|H|I]]|9|@]|A|$]]|$1|J|3|K|5|L|7|18|8|@]|9|@]|A|$M|N]]|$1|O|3|P|5|6|7|19|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1A|8|@]|9|@$D|1B|E|1C|1|1D]]|A|$]]|$1|S|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|C]]|Z|$5|V|W|X|A|$Y|R]]]]

I have used this awesome extension (written in kotlin but can be also used in Java)

<a href="https://github.com/Widgetlabs/expedition-nestedscrollview" rel="nofollow noreferrer">https://github.com/Widgetlabs/expedition-nestedscrollview</a>

Basically you get the <code>NestedRecyclerView</code> inside any package lets say utils in your project, then just create your recyclerview like

<pre><code> &lt;com.your_package.utils.NestedRecyclerView
 android:id="@+id/rv_test"
 android:layout_width="match_parent"
 android:layout_height="match_parent" /&gt;
</code></pre>

Check this awesome article by Marc Knaup 

<a href="https://medium.com/widgetlabs-engineering/scrollable-nestedscrollviews-inside-recyclerview-ca65050d828a" rel="nofollow noreferrer">https://medium.com/widgetlabs-engineering/scrollable-nestedscrollviews-inside-recyclerview-ca65050d828a</a>

blocks|key|131100|text|在我的例子中，NestedScrollview的子类是ConstraintLayout。它没有像预期的那样工作，我把它换成了LinearLayout。也许它能帮到别人。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|131101|<androidx.core.widget.NestedScrollView+
++android:id="@%2Bid/nestedScrollView"+
++android:layout_width="match_parent"+
++android:layout_height="match_parent">

++<LinearLayout+
++++android:layout_width="match_parent"+
++++android:layout_height="wrap_content"+
++++android:descendantFocusability="blocksDescendants">

++++<androidx.recyclerview.widget.RecyclerView
++++++android:id="@%2Bid/recyclerView"
++++++android:layout_width="0dp"
++++++android:layout_height="wrap_content"
++++++android:nestedScrollingEnabled="false"+/>

++</LinearLayout>

</androidx.core.widget.NestedScrollView>|code-block|syntax|javascript|131102|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

For my case the child of NestedScrollview is ConstraintLayout. It is not working as expected i replaced it to LinearLayout. Maybe it helps someone.
<pre><code>&lt;androidx.core.widget.NestedScrollView 
 android:id=&quot;@+id/nestedScrollView&quot; 
 android:layout_width=&quot;match_parent&quot; 
 android:layout_height=&quot;match_parent&quot;&gt;

 &lt;LinearLayout 
 android:layout_width=&quot;match_parent&quot; 
 android:layout_height=&quot;wrap_content&quot; 
 android:descendantFocusability=&quot;blocksDescendants&quot;&gt;

 &lt;androidx.recyclerview.widget.RecyclerView
 android:id=&quot;@+id/recyclerView&quot;
 android:layout_width=&quot;0dp&quot;
 android:layout_height=&quot;wrap_content&quot;
 android:nestedScrollingEnabled=&quot;false&quot; /&gt;

 &lt;/LinearLayout&gt;

&lt;/androidx.core.widget.NestedScrollView&gt;
</code></pre>

blocks|key|2908786|text|如果你想在NestedScrollView中使用RecyclerView，这是一个简单的技巧，只需设置：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2908787|RecyclerView|2908788|2908789|recyclerView.setHasFixedSize(false)+(java/kt)|unordered-list-item|2908790|2908791|2908792|android:nestedScrollingEnabled="false"|2908793|2908794|2908795|android:layout_height="wrap_content"|2908796|2908797|2908798|android:overScrollMode="never"|2908799|2908800|NestedScrollView|2908801|2908802|android:fillViewport="true"|2908803|2908804|这是我的工作，你也可以用它在NestedScrollView中使用很多RecyclerView。|2908805|entityMap^0|5|G|O|C|0|0|C|0|0|0|0|0|0|0|0|0|0|0|0|0|0|G|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|18|8|@$9|19|A|1A|B|C]|$9|1B|A|1C|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1D|8|@$9|1E|A|1F|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|1G|8|@]|D|@]|E|$]]|$1|I|3|J|5|K|7|1H|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|1I|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|1J|8|@]|D|@]|E|$]]|$1|N|3|O|5|K|7|1K|8|@]|D|@]|E|$]]|$1|P|3|-4|5|6|7|1L|8|@]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|1M|8|@]|D|@]|E|$]]|$1|R|3|S|5|K|7|1N|8|@]|D|@]|E|$]]|$1|T|3|-4|5|6|7|1O|8|@]|D|@]|E|$]]|$1|U|3|-4|5|6|7|1P|8|@]|D|@]|E|$]]|$1|V|3|W|5|K|7|1Q|8|@]|D|@]|E|$]]|$1|X|3|-4|5|6|7|1R|8|@]|D|@]|E|$]]|$1|Y|3|Z|5|6|7|1S|8|@$9|1T|A|1U|B|C]]|D|@]|E|$]]|$1|10|3|-4|5|6|7|1V|8|@]|D|@]|E|$]]|$1|11|3|12|5|K|7|1W|8|@]|D|@]|E|$]]|$1|13|3|-4|5|6|7|1X|8|@]|D|@]|E|$]]|$1|14|3|15|5|6|7|1Y|8|@]|D|@]|E|$]]|$1|16|3|-4|5|6|7|1Z|8|@]|D|@]|E|$]]]|17|$]]

if you want to use RecyclerView in NestedScrollView this is a simple tricky, just set :
RecyclerView
<ul>
<li>recyclerView.setHasFixedSize(false) (java/kt)
</li>
<li>android:nestedScrollingEnabled=&quot;false&quot;
</li>
<li>android:layout_height=&quot;wrap_content&quot;
</li>
<li>android:overScrollMode=&quot;never&quot;
</li>
</ul>
NestedScrollView
<ul>
<li>android:fillViewport=&quot;true&quot;</li>
</ul>
this is work for me, and you can use many RecyclerView in NestedScrollView with this too.

blocks|key|134120|text|在我的例子中，这是对我有效的方法|type|unstyled|depth|inlineStyleRanges|entityRanges|data|134121|134122|在NestedScrollView.|unordered-list-item|134123|中放入android:fillViewport="true"|offset|length|style|CODE|134124|将RecyclerView的高度设为wrap_content，即|134125|134126|134127|134128|在RecyclerView+android:nestedScrollingEnabled="false"|134129|中添加此内容|134130|或|134131|以编程方式，在Kotlin类中|134132|recyclerView.isNestedScrollingEnabled+=+false|134133|mRecyclerView.setHasFixedSize(false)|134134|entityMap^0|0|0|0|3|R|0|0|0|0|0|E|12|0|0|0|0|0|19|0|0|10|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|15|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|16|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|17|8|@$H|18|I|19|J|K]]|9|@]|A|$]]|$1|L|3|M|5|6|7|1A|8|@]|9|@]|A|$]]|$1|N|3|-4|5|E|7|1B|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|1C|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]|$1|Q|3|R|5|E|7|1E|8|@$H|1F|I|1G|J|K]]|9|@]|A|$]]|$1|S|3|T|5|6|7|1H|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|1I|8|@]|9|@]|A|$]]|$1|W|3|X|5|6|7|1J|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|6|7|1K|8|@$H|1L|I|1M|J|K]]|9|@]|A|$]]|$1|10|3|11|5|6|7|1N|8|@$H|1O|I|1P|J|K]]|9|@]|A|$]]|$1|12|3|-4|5|6|7|1Q|8|@]|9|@]|A|$]]]|13|$]]

In my case, this is what works for me
<ul>
<li>Put <code>android:fillViewport=&quot;true&quot;</code> inside NestedScrollView.
</li>
<li>Make the height of RecyclerView to wrap_content, i.e <code>android:layout_height=&quot;wrap_content&quot;</code>
</li>
<li>Add this in RecyclerView <code>android:nestedScrollingEnabled=&quot;false&quot;</code>
</li>
</ul>
OR
Programmatically, in your Kotlin class
<code>recyclerView.isNestedScrollingEnabled = false</code>
<code>mRecyclerView.setHasFixedSize(false) </code>

blocks|key|131139|text|至少早在Material+Components+1.3.0-alpha03中，如果RecyclerView是嵌套的(在ScrollView或NestedScrollView之外的其他东西中)，这都无关紧要。只需将app:layout_behavior="@string/appbar_scrolling_view_behavior"放在其顶层父对象上，即CoordinatorLayout中AppBarLayout的兄弟对象。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|131140|当我在Jetpack+Naviagation中使用单个活动架构时，这对我很有效，其中所有片段都共享来自活动布局的相同AppBar。我将FragmentContainer设为CoordinatorLayout的直接子对象，其中也包含AppBarLayout，如下所示。各个片段中的RecyclerViews正常滚动，AppBar折叠并按预期重新出现。|131141|++++<androidx.coordinatorlayout.widget.CoordinatorLayout
++++++++android:id="@%2Bid/coordinatorLayout"
++++++++android:layout_width="match_parent"
++++++++android:layout_height="match_parent">

++++++++<androidx.fragment.app.FragmentContainerView
++++++++++++android:id="@%2Bid/nav_host_fragment"
++++++++++++android:name="androidx.navigation.fragment.NavHostFragment"
++++++++++++android:layout_width="match_parent"
++++++++++++android:layout_height="match_parent"
++++++++++++app:layout_behavior="@string/appbar_scrolling_view_behavior"
++++++++++++app:defaultNavHost="true"
++++++++++++app:navGraph="@navigation/mobile_navigation"/>

++++++++<com.google.android.material.appbar.AppBarLayout
++++++++++++android:id="@%2Bid/appbar_layout"
++++++++++++android:layout_width="match_parent"
++++++++++++android:layout_height="wrap_content"
++++++++++++app:liftOnScroll="true">

++++++++++++<androidx.appcompat.widget.Toolbar
++++++++++++++++android:id="@%2Bid/toolbar"
++++++++++++++++android:layout_width="match_parent"
++++++++++++++++android:layout_height="wrap_content"
++++++++++++++++android:minHeight="?attr/actionBarSize"
++++++++++++++++android:theme="?attr/actionBarTheme"
++++++++++++++++app:layout_scrollFlags="scroll%7CenterAlways%7Csnap"+/>

++++++++</com.google.android.material.appbar.AppBarLayout>

++++</androidx.coordinatorlayout.widget.CoordinatorLayout>|code-block|syntax|javascript|131142|如果每个片段将其RecyclerView的ID传递给Fragment.onResume中的AppBarLayout.liftOnScrollTargetViewId，则liftOnScroll+(用于使应用程序栏在页面顶部时看起来像是零标高)起作用。或者，如果片段没有滚动，则传递0。|131143|entityMap^0|2Y|1O|0|0|0|Q|H|19|11|2C|C|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|U|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|V|8|@$9|W|A|X|B|C]|$9|Y|A|Z|B|C]|$9|10|A|11|B|C]]|D|@]|E|$]]|$1|O|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|P|$]]

At least as far back as Material Components 1.3.0-alpha03, it doesn't matter if the RecyclerView is nested (in something other than a ScrollView or NestedScrollView). Just put <code>app:layout_behavior=&quot;@string/appbar_scrolling_view_behavior&quot;</code> on its top level parent that's a sibling of the AppBarLayout in the CoordinatorLayout.
This has been working for me when using a single Activity architecture with Jetpack Naviagation, where all Fragments are sharing the same AppBar from the Activity's layout. I make the FragmentContainer the direct child of the CoordinatorLayout that also contains the AppBarLayout, like below. The RecyclerViews in the various fragments are scrolling normally and the AppBar folds away and reappears as expected.
<pre class="lang-xml prettyprint-override"><code> &lt;androidx.coordinatorlayout.widget.CoordinatorLayout
 android:id=&quot;@+id/coordinatorLayout&quot;
 android:layout_width=&quot;match_parent&quot;
 android:layout_height=&quot;match_parent&quot;&gt;

 &lt;androidx.fragment.app.FragmentContainerView
 android:id=&quot;@+id/nav_host_fragment&quot;
 android:name=&quot;androidx.navigation.fragment.NavHostFragment&quot;
 android:layout_width=&quot;match_parent&quot;
 android:layout_height=&quot;match_parent&quot;
 app:layout_behavior=&quot;@string/appbar_scrolling_view_behavior&quot;
 app:defaultNavHost=&quot;true&quot;
 app:navGraph=&quot;@navigation/mobile_navigation&quot;/&gt;

 &lt;com.google.android.material.appbar.AppBarLayout
 android:id=&quot;@+id/appbar_layout&quot;
 android:layout_width=&quot;match_parent&quot;
 android:layout_height=&quot;wrap_content&quot;
 app:liftOnScroll=&quot;true&quot;&gt;

 &lt;androidx.appcompat.widget.Toolbar
 android:id=&quot;@+id/toolbar&quot;
 android:layout_width=&quot;match_parent&quot;
 android:layout_height=&quot;wrap_content&quot;
 android:minHeight=&quot;?attr/actionBarSize&quot;
 android:theme=&quot;?attr/actionBarTheme&quot;
 app:layout_scrollFlags=&quot;scroll|enterAlways|snap&quot; /&gt;

 &lt;/com.google.android.material.appbar.AppBarLayout&gt;

 &lt;/androidx.coordinatorlayout.widget.CoordinatorLayout&gt;
</code></pre>
<code>liftOnScroll</code> (used to for app bars to look like they have zero elevation when at the top of the page) works if each fragment passes the ID of its RecyclerView to <code>AppBarLayout.liftOnScrollTargetViewId</code> in <code>Fragment.onResume</code>. Or pass 0 if the Fragment doesn't scroll.

How to use <code>RecyclerView</code> inside <code>NestedScrollView</code>?
<code>RecyclerView</code> content is not visible after setting adapter.

UPDATE layout code updated.

<pre><code>&lt;android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"&gt;

&lt;LinearLayout
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical"&gt;

 &lt;RelativeLayout
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:padding="@dimen/keyline_1"&gt;

 &lt;/RelativeLayout&gt;

 &lt;View
 android:id="@+id/separator"
 android:layout_width="match_parent"
 android:layout_height="1dp"
 android:background="#e5e5e5" /&gt;

 &lt;android.support.v7.widget.RecyclerView
 android:id="@+id/conversation"
 android:layout_width="match_parent"
 android:layout_height="wrap_content" /&gt;

&lt;/LinearLayout&gt;

&lt;/android.support.v4.widget.NestedScrollView&gt;
</code></pre>

How to use RecyclerView inside NestedScrollView?

Kotlin

Java

如何在NestedScrollView中使用RecyclerView？设置适配器后，RecyclerView内容不可见。已更新更新布局代码。<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/...

问如何在NestedScrollView中使用RecyclerView？
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