android：滚动视图中的 RecyclerView
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android: RecyclerView inside a ScrollView
提问by nomongo
I have a RecyclerViewwrapped in a LinearLayoutand it works perfectly as expected. I can see all the data in the RecyclerViewas populated. So far so good.
我有一个RecyclerView包裹在 a 中LinearLayout，它按预期完美运行。我可以看到RecyclerView填充的所有数据。到现在为止还挺好。
When I wrap the LinearLayoutin a ScrollView, the RecyclerViewgoes blank. I do not see anything inside RecyclerView. Why? How to make this work.
当我将LinearLayouta包裹起来时ScrollView，它RecyclerView变为空白。我看不到里面的任何东西RecyclerView。为什么？如何使这项工作。
The page is one of the tabs in a ViewPagerIndicator, so everything in that tab needs to be in a ScrollView.
该页面是 a 中的选项卡之一ViewPagerIndicator，因此该选项卡中的所有内容都需要在ScrollView.
Thanks for all the help.
感谢所有的帮助。
回答by Sathesh
Set this property for the ScrollView,
为 ScrollView 设置此属性，
android:fillViewport="true"
ScrollView will extend itself to fill the contents
ScrollView 将自身扩展以填充内容
回答by sergej shafarenka
After checking implementation, the reason appears to be the following. If RecyclerViewgets put into a ScrollView, then during measure step its height is unspecified (because ScrollViewallows any height) and, as a result, gets equal to minimum height (as per implementation) which is apparently zero.
检查实施后，原因似乎如下。如果RecyclerView被放入 a ScrollView，那么在测量步骤中，它的高度是未指定的（因为ScrollView允许任何高度），因此，它等于最小高度（根据实现），这显然为零。
You have couple of options for fixing this:
您有几个选项可以解决这个问题：
- Set a certain height to
RecyclerView - Set
ScrollView.fillViewporttotrue - Or keep
RecyclerViewoutside ofScrollView. I my opinion, this is the best option by far. IfRecyclerViewheight is not limited - which is the case when it's put intoScrollView- then all Adapter's views have enough place vertically and get created all at once. There is no view recycling anymore which kinda breaks the purpose ofRecyclerView.
- 设置一定的高度
RecyclerView - 设置
ScrollView.fillViewport为true - 或保持
RecyclerView在ScrollView. 我认为，这是迄今为止最好的选择。如果RecyclerView高度不受限制——当它被放入时就是这种情况ScrollView——那么所有适配器的视图都有足够的垂直位置并一次性创建。不再有视图回收，这有点违反RecyclerView.
回答by neustart47
Nothing helped me except this:
除了这个，没有什么能帮助我：
mRecyclerView.addOnItemTouchListener(new RecyclerView.OnItemTouchListener() {
@Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
int action = e.getAction();
switch (action) {
case MotionEvent.ACTION_MOVE:
rv.getParent().requestDisallowInterceptTouchEvent(true);
break;
}
return false;
}
@Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
@Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
});
I got this answer there. Thank you Piyush Guptafor that.
我在那里得到了这个答案。感谢Piyush Gupta。
回答by iDeveloper
Hope this helps :
希望这可以帮助 ：
Add this line to your recyclerView xml :
将此行添加到您的 recyclerView xml ：
android:nestedScrollingEnabled="false"
Try it ,recyclerview will be smoothly scrolled with flexible height inside scrollview .
尝试一下，recyclerview 将在 scrollview 内以灵活的高度平滑滚动。
