问题
There is a Recycler View inside the other Recycler View.Both needs to scroll vertically. Outer Recycler view is scrolling properly but inner recycler view is not.
Here is the code:
LinearLayoutManager mLayoutManager = new LinearLayoutManager(ViewActivity.this);
outerRecyclerView.setLayoutManager(mLayoutManager);
ViewAdapter adapter = new ViewAdapter(ViewActivity.this);
outerRecyclerView.setAdapter(adapter);
ViewAdapter is as follows:
public void onBindViewHolder(ViewAdapter.ViewViewHolder holder, int position)
{
//RECYCLER VIEW
//TODO: Inner Recycler view scroll movement
LinearLayoutManager mLayoutManager = new LinearLayoutManager(context);
holder.protocolRecyclerView.setLayoutManager(mLayoutManager);
ViewProtocolAdapter adapter = new ViewProtocolAdapter(context);
holder.protocolRecyclerView.setAdapter(adapter);
}
I have tried the following on both recycler views but could not solve the problem
recyclerView.addOnItemTouchListener(new RecyclerView.OnItemTouchListener() {
@Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
if(rv.getChildCount() > 0) {
View childView = rv.findChildViewUnder(e.getX(), e.getY());
if(childView ==listView) {
int action = e.getAction();
switch (action) {
case MotionEvent.ACTION_DOWN:
rv.requestDisallowInterceptTouchEvent(true);
}
}
}
return false;
}
@Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
@Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
});
Also tried this one:
outerRecyclerView.setNestedScrollingEnabled(true);//Does not make any difference
innerRecyclerView.setNestedScrollingEnabled(true);//Recycler View start scrolling but very slowly and sometimes scrolls the outer one.
回答1:
Instead of using ScrollView use android.support.v4.widget.NestedScrollView
Here for me it worked perfectly.
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<android.support.v7.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="4dp"
/>
</android.support.v4.widget.NestedScrollView>
回答2:
I had the same problem while implementing a recycler view some time ago. Both the recycler views would start scrolling, right. Though it's a bad idea going for a nested recycler view but if you want it to scroll properly, you have to disable the scroll on the inner one. I am not sure but i think it was this. Let me know if it works. If not I'll dig up my code and try to find the solution.
RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(parent.getContext()) {
@Override
public boolean canScrollVertically() {
return false;
}
};
回答3:
Apply this below ontouch listener to inner recycler which is may be in adapter of parent recycler.
RecyclerView.OnItemTouchListener mScrollTouchListener = 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) {
}
};
innerrecyclerView.addOnItemTouchListener(mScrollTouchListener);
回答4:
You don't need to put recyclerView inside another recyclerView. This does not make sense. If you want to put together in a single Layout XML just follow the steps below:
- Make NestedScrollView parent
- Create LinerLayout inside your NestedScrollView
Put RecyclerViews inside NestedScrollView
<android.support.v4.widget.NestedScrollView android:layout_width="match_parent" android:layout_height="wrap_content"> <LinearLayout android:orientation="vertical" android:layout_width="match_parent" android:layout_height="wrap_content"> <android.support.v7.widget.RecyclerView android:id="@+id/firstRecycler" android:layout_width="match_parent" android:layout_height="wrap_content"/> <android.support.v7.widget.RecyclerView android:id="@+id/secondRecycler" android:layout_width="match_parent" android:layout_height="wrap_content"/> </LinearLayout> </android.support.v4.widget.NestedScrollView>
回答5:
What you can do is, you can add a scroll view as root layout for the view holder encapsulating second recycler view in it.
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/subContainer"
>
<android.support.v7.widget.RecyclerView
android:id="@+id/subList"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</ScrollView>
After doing that, subList recycler view can fully utilize wrap_content property. Now, for this to work you need to disable vertical scroll of sublist recycler view.
LinearLayoutManager layoutManager = new LinearLayoutManager(context) {
@Override
public boolean canScrollVertically() {
return false;
}
};
Doing so, all the vertical scroll events will be handled by parent recycler view.
回答6:
Now, for this to work you need to disable vertical scroll of sublist recycler view.
LinearLayoutManager layoutManager = new LinearLayoutManager(context) {
@Override
public boolean canScrollVertically() {
return false;
}
};
回答7:
Don't keep a recycler view inside a recycler view. Instead you should inflate the inner recycler view. You can have a Linear layout and inflate that layout in onBindViewHolder of the recycler view. By doing this, you will never face scrolling problem.
回答8:
parentScroll.setOnTouchListener(new View.OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
findViewById(R.id.childScroll).getParent()
.requestDisallowInterceptTouchEvent(false);
return false;
}
});
childScroll.setOnTouchListener(new View.OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
v.getParent().requestDisallowInterceptTouchEvent(true);
return false;
}
});
来源：https://stackoverflow.com/questions/37423763/recycler-view-inside-recycler-view-not-scrolling