Question

我有一个处理RecyclerView的singleClickListener的类。我正在使用GestureDetector来处理点击。如何将LongPressListener添加到同一个类来处理它们？

public class RecyclerViewItemClickListener implements RecyclerView.OnItemTouchListener {
    private OnItemClickListener mListener;

    public interface OnItemClickListener {
        public void onItemClick(View view, int position);
    }

    GestureDetector mGestureDetector;

    public RecyclerViewItemClickListener(Context context, OnItemClickListener listener) {
        mListener = listener;
        mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
            @Override
            public boolean onSingleTapUp(MotionEvent e) {
                return true;
            }

            @Override
            public boolean onDown(MotionEvent event) {
                // triggers first for both single tap and long press
                return true;
            }

            @Override
            public void onLongPress(MotionEvent event) {
                //...
                super.onLongPress(event);
            }
        });
    }

    @Override
    public boolean onInterceptTouchEvent(RecyclerView view, MotionEvent e) {
        View childView = view.findChildViewUnder(e.getX(), e.getY());
        if (childView != null && mListener != null && mGestureDetector.onTouchEvent(e)) {
            mListener.onItemClick(childView, view.getChildAdapterPosition(childView));
        }
        return false;
    }

    @Override
    public void onTouchEvent(RecyclerView view, MotionEvent motionEvent) {
    }

我在我的活动中使用这个类：

recyclerView.addOnItemTouchListener(
                new RecyclerViewItemClickListener(this, new RecyclerViewItemClickListener.OnItemClickListener() {
                    @Override public void onItemClick(View view, int position) {
                        // TODO Handle item click
                        Log.d(TAG, "item clicket position: " + position);
                    }
                })
        );

Answer 1

如果你想同时处理onInterceptTouchEvent，就这样使用它。

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使用Android中的GestureDetector处理单击和长按

1 个答案: