自定义高效支持点击监听的RecyclerView

效果图

Demo

地址：GitHub

传统做法

在Adapter内部直接对View添加点击事件

因为这种方式虽然也可以解决点击监听问题，但是效率不高，所以我就截了一张图，大家也就不要想着复制了，

话说我原来也是一直用这种方式，直到看到一篇文章：RecyclerView无法添加onItemClickListener最佳的高效解决方案

性能上肯定是有一定提升，下面我对此进行了一下封装

封装

package kong.qingwei.recyclerviewitemclickdemo;import android.content.Context;
import android.support.annotation.Nullable;
import android.support.v4.view.GestureDetectorCompat;
import android.support.v7.widget.RecyclerView;
import android.util.AttributeSet;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;/*** Created by kqw on 2016/5/18.* KqwRecyclerView* 支持点击监听的RecyclerView*/
public class KqwRecyclerView extends RecyclerView implements RecyclerView.OnItemTouchListener {private GestureDetectorCompat mGestureDetector;private OnItemClickListener mOnItemClickListener;private OnItemLongClickListener mOnItemLongClickListener;public KqwRecyclerView(Context context, @Nullable AttributeSet attrs) {super(context, attrs);initRecyclerView();}private void initRecyclerView(){mGestureDetector = new GestureDetectorCompat(getContext(), new ItemTouchHelperGestureListener());addOnItemTouchListener(this);}@Overridepublic boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {mGestureDetector.onTouchEvent(e);return false;}@Overridepublic void onTouchEvent(RecyclerView rv, MotionEvent e) {mGestureDetector.onTouchEvent(e);}@Overridepublic void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {}private class ItemTouchHelperGestureListener extends GestureDetector.SimpleOnGestureListener {@Overridepublic boolean onSingleTapUp(MotionEvent e) {View child = findChildViewUnder(e.getX(), e.getY());if (child != null) {RecyclerView.ViewHolder vh = getChildViewHolder(child);// 回调if (mOnItemClickListener != null) {mOnItemClickListener.onItemClick(vh);}}return true;}@Overridepublic void onLongPress(MotionEvent e) {View child = findChildViewUnder(e.getX(), e.getY());if (child!=null) {RecyclerView.ViewHolder vh = getChildViewHolder(child);// 回调if (mOnItemLongClickListener != null) {mOnItemLongClickListener.onItemLongClick(vh);}}}}public interface OnItemClickListener {void onItemClick(ViewHolder v);}public interface OnItemLongClickListener {boolean onItemLongClick(ViewHolder v);}public void setOnItemClickListener(@Nullable OnItemClickListener listener) {mOnItemClickListener = listener;}public void setOnItemLongClickListener(OnItemLongClickListener listener) {if (!isLongClickable()) {setLongClickable(true);}mOnItemLongClickListener = listener;}
}

使用

使用和ListView一样

KqwRecyclerView recyclerView = (KqwRecyclerView) findViewById(R.id.recyclerView);
……
recyclerView.setOnItemClickListener(new KqwRecyclerView.OnItemClickListener() {@Overridepublic void onItemClick(RecyclerView.ViewHolder v) {Toast.makeText(getApplicationContext(), "onItemClick\n" + v.toString(), Toast.LENGTH_SHORT).show();}
});
recyclerView.setOnItemLongClickListener(new KqwRecyclerView.OnItemLongClickListener() {@Overridepublic boolean onItemLongClick(RecyclerView.ViewHolder v) {Toast.makeText(getApplicationContext(), "onItemLongClick\n" + v.toString(), Toast.LENGTH_SHORT).show();return false;}
});