一种方法是将子RecyclerView的滚动事件监听器设置为禁用,然后将其转移到父RecyclerView的onNestedScroll方法中。这样可以在父RecyclerView中处理子RecyclerView的滚动事件。
另一种方法是在父RecyclerView中设置onTouchListener,以便在检测到滚动手势时拦截事件。在onTouch方法中,检查触摸事件是否在标题视图中。如果是,则在返回true之前处理该事件,否则返回false以允许RecyclerView接收事件。
以下是实现前一种方法的示例代码:
public class ParentAdapter extends RecyclerView.Adapter
@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
if (holder instanceof ParentViewHolder) {
final ParentViewHolder parentViewHolder = (ParentViewHolder) holder;
final LinearLayoutManager layoutManager = new LinearLayoutManager(holder.itemView.getContext(), RecyclerView.VERTICAL, false);
final ChildAdapter childAdapter = new ChildAdapter();
childAdapters.add(childAdapter);
parentViewHolder.recyclerView.setLayoutManager(layoutManager);
parentViewHolder.recyclerView.setAdapter(childAdapter);
parentViewHolder.recyclerView.setNestedScrollingEnabled(false);
parentViewHolder.recyclerView.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_MOVE) {
for (ChildAdapter adapter : childAdapters) {
adapter.getParentRecyclerView().stopScroll();
}
}
return false;
}
});
}
}
@Override
public void onNestedScroll(@NonNull View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed, int type) {
for (ChildAdapter adapter : childAdapters) {
final RecyclerView childRecyclerView = adapter.getParentRecyclerView();
childRecyclerView.scrollBy(0, dyUnconsumed);
}
}
//...other implementation methods
}
public class ChildAdapter extends RecyclerView.Adapter