RecyclerView点击事件与长按事件

原文地址：http://m.blog.csdn.net/article/details?id=51332411

在网上找了一下实现方法，有的说在adapter里添加回调接口来实现点击事件与长按事件。 
不过经过测试，有时候会产生这样的现象：点击item跳转到下一个页面，再返回回来时， 
item的点击事件会失效。后来在Stack Overflow找到了新的方法。 
原文链接如下：RecyclerView onClick。这里 贴上代码：

public class RecyclerItemClickListener implements RecyclerView.OnItemTouchListener {
public interface OnItemClickListener {
void onItemClick(View view, int position);

void onItemLongClick(View view, int position);
    }

private OnItemClickListener mListener;

private GestureDetector mGestureDetector;

public RecyclerItemClickListener(Context context, final RecyclerView recyclerView, OnItemClickListener listener) {
        mListener = listener;

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

@Override
public void onLongPress(MotionEvent e) {
                View childView = recyclerView.findChildViewUnder(e.getX(), e.getY());

if (childView != null && mListener != null) {
                    mListener.onItemLongClick(childView, recyclerView.getChildAdapterPosition(childView));
                }
            }
        });
    }

@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) {
    }

@Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
    }
}
 
 

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然后在activity中添加事件即可：

recyclerView.addOnItemTouchListener(new RecyclerItemClickListener(getActivity(), recyclerView, new RecyclerItemClickListener.OnItemClickListener() {
    @Override
    public void onItemClick(View view, int position) {
        // ...
    }

    @Override
    public void onItemLongClick(View view, int position) {
        // ...
    }
}));
 
 

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