OnClickListener/OnTouchListener on LinearLayout inside RecyclerView not called first time after a quick swipe (for up to 3 seconds)

Question

I have an XML like this (I simplified from the original one, but it still reproduces the issue):

<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android">

    <LinearLayout
        android:id="@+id/xContainer"
        android:clickable="true"                // does not help
        android:focusable="true"                // does not help
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center_vertical"
        android:paddingBottom="8dp"
        android:paddingTop="8dp">

        <TextView
            android:duplicateParentState="true" // does not help
            android:clickable="false"           // does not help
            android:id="@+id/xText"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:padding="8dp"
            android:text="@string/xText"
            android:textSize="14sp" />

    </LinearLayout>
</merge>

and it's included from a CardView like this:

 <include layout="@layout/other_stuff_first" />
 <include layout="@layout/my_clickable_layout" />

Then I display the item dynamically and attach an OnClickListener to it, in the same method:

public class XViewHolder extends RecyclerView.ViewHolder {
    private final View xContainer;
    ...
    public XViewHolder(@NonNull View itemView) {
      xContainer = itemView.findViewById(R.id.xContainer);
    }
    ...
    private void bindStuff(RecyclerView.ViewHolder holder, int position) {
        if (something) {
            xContainer.setVisibility(View.VISIBLE);
            xContainer.setOnClickListener(v -> {
              // do some stuff
            });
        } else {
            xContainer.setVisibility(View.GONE);
            xContainer.setOnClickListener(null);
        }
    }
}

public class ParentAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
      ...
      ((XViewHolder) xViewHolder).bindStuff();
    }
}

I put some breakpoints, went through the code in the debugger, and it's properly executed (otherwise it would not show up in the UI at all), so the listener is set.

However, the first time when I click the container, most of the time nothing happens. On the consecutive clicks, it works (90% of time on 2nd click and 100% of time on 3rd+ click). I always click in the same way, the container is big, even if I put my whole finger down with a big force, first click doesn't register.

I found several similar questions, but they're either "all or nothing" (whereas in my case it's just sporadic), or due to some other issues. In my app, there's no work on the main thread after the UI is displayed.

Any ideas what can be wrong?

Edit: after some investigation, the issue only happens if:

my_clickable_layout is at the bottom of the scrolling container and not initially visible on screen (only becomes visible after the user scrolls down), AND
the user scrolls down fast, AND
the user taps my_clickable_layout within 0-3 seconds after the scroll.

If the layout is immediately visible, OR user scrolls down slowly, OR user taps more than once, then the taps are dispatched properly.

The RecyclerView itself receives the touch events, because I can always see the logs from the code below, even if I don't see the logs from my children listeners.

    recyclerView = view.findViewById(R.id.recycler_view);
    recyclerView.addOnItemTouchListener(new RecyclerView.SimpleOnItemTouchListener() {
        @Override
        public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
            Timber.w("onInterceptTouchEvent");
            return false;
        }
    });

At this moment I believe this might be a bug in RecyclerView, which wrongly consumes the first event after a fast scroll - perhaps to detect "end of scrolling" tap?

OnClickListener/OnTouchListener on LinearLayout inside RecyclerView not called first time after a quick swipe (for up to 3 seconds)

0 Answers0