ScrollView inside RecyclerView won't scroll

问题

I want to make a LinearLayout (to which I'm adding items dynamically) scrollable inside a scrollable RecyclerView. On startup, I can see a little scrollbar initially (indicating it's a scrollable view, fades in seconds). Tried appCompat NestedScrollView as well as enabling nestedScrollingEnabled, with no success. How can I make the LinearLayout scrollable inside the RecyclerView?

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools">
  <ScrollView
      android:layout_width="wrap_content"
      android:layout_height="300dp"
      android:fillViewport="true"
      android:nestedScrollingEnabled="true">
      <LinearLayout
          android:id="@+id/playerlist_linear"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:gravity="left|center_vertical"
          android:layout_marginLeft="10dp"
          android:layout_marginRight="10dp"
          android:layout_marginTop="5dp"
          android:layout_marginBottom="7dp"
          android:orientation="vertical">
      </LinearLayout>
  </ScrollView>

</FrameLayout>

RecyclerView code

<android.support.v7.widget.RecyclerView
    android:id="@+id/messagesListView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="bottom"
    android:layout_weight="1"
    android:nestedScrollingEnabled="false"/>

UPDATE: I found out that scrolling does indeed work, but only if I spam the mouse or tap really fast inside the scrollview. It kind of gets focused and allows scrolling as long as mouse is held down. Really strange.

回答1:

Try disabling the touch of recycler view when scrollview is being touched.

ScrollView scrollView = (ScrollView)findViewById(R.id.scrollView1);
scrollView.setOnTouchListener(new View.OnTouchListener() {
                @Override
                public boolean onTouch(View view, MotionEvent motionEvent) {
                     // Disallow the touch request for parent scroll on touch of child view
                    view.getParent().requestDisallowInterceptTouchEvent(false);
                    return true;
                }
            });

回答2:

I solved it by adding a line to rafsanahmad007's solution:

    ScrollView scrollView = (ScrollView)findViewById(R.id.scrollView1);
    scrollView.setOnTouchListener(new View.OnTouchListener() {
                    @Override
                    public boolean onTouch(View view, MotionEvent motionEvent) {
                         // Disallow the touch request for parent scroll on touch of child view

                   view.getParent().requestDisallowInterceptTouchEvent(false);
                   view.onTouch(motionEvent);
                        return true;
                    }
                });

I'm not sure that's how View.onTouch is called on Java, as I'm developing with Xamarin.Android (C#). It should be pretty similar.

来源：https://stackoverflow.com/questions/48477033/scrollview-inside-recyclerview-wont-scroll

标签

android

android-layout