import android.support.v4.view.GestureDetectorCompat;
import android.support.v7.widget.RecyclerView;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;

/**
 * <pre>
 *  名称：RecyclerItemClickListener
 *  作用：
 *  描述：
 *  作者：pczhu
 *  创建时间： 2017/6/9 下午2:26
 *  版本：V1.0
 *  修改历史：
 *  </pre>
 */

public class RecyclerItemClickListener extends RecyclerView.SimpleOnItemTouchListener {


    private OnItemClickListener clickListener;
    private GestureDetectorCompat gestureDetector; //v4 兼容包中

    public interface OnItemClickListener {
        /**
         * 点击时回调
         *
         * @param view 点击的View
         * @param position 点击的位置
         */
        void onItemClick(View view, int position);

        /**
         * 长点击时回调
         *
         * @param view 点击的View
         * @param position 点击的位置
         */
        void onItemLongClick(View view, int position);
    }

    public RecyclerItemClickListener(final RecyclerView recyclerView, OnItemClickListener listener) {
        this.clickListener = listener;
        gestureDetector = new GestureDetectorCompat(recyclerView.getContext(),
                new GestureDetector.SimpleOnGestureListener() {
                    @Override
                    public boolean onSingleTapUp(MotionEvent e) {
                        //找到点击位置对应的recyclerViewItem布局
                        View childView = recyclerView.findChildViewUnder(e.getX(), e.getY());
                        if (childView != null && clickListener != null ) {
                            //回调item对象以及在recyclerview中的位置
                            clickListener.onItemClick(childView, recyclerView.getChildAdapterPosition(childView));
                            return true;
                        }
                        return super.onSingleTapUp(e);
                    }
                    @Override
                    public void onLongPress(MotionEvent e) {
                        //找到点击位置对应的recyclerViewItem布局
                        View childView = recyclerView.findChildViewUnder(e.getX(), e.getY());
                        if (childView != null && clickListener != null) {
                            //回调item对象以及在recyclerview中的位置
                            clickListener.onItemLongClick(childView,
                                    recyclerView.getChildAdapterPosition(childView));
                        }
                    }
                });
    }
    @Override
    public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
        //拦截相关事件交给gestureDetector对象处理。
        if(gestureDetector.onTouchEvent(e)){
            return true;
        }
        return false;

    }
}