如何为RecyclerView设置onItemClickListener？

Question

我正在尝试实现recyclerView但是如何为我的recyclerView设置onItemClickListener？

Answer 1

在Android中,RecyclerViewlisteners在ListView 中没有任何类似功能.所以你需要通过扩展来创建自己的类RecyclerView.OnItemTouchListener.

创建一个类 RecyclerTouchListener.java

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;

public class RecyclerTouchListener implements RecyclerView.OnItemTouchListener {

  private GestureDetector gestureDetector;
  private ClickListener clickListener;

public RecyclerTouchListener(Context context, final RecyclerView recyclerView, final ClickListener clickListener) {
    this.clickListener = clickListener;
    gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
        @Override
        public boolean onSingleTapUp(MotionEvent e) {

            return true;

        }

        @Override
        public void onLongPress(MotionEvent e) {

            View child = recyclerView.findChildViewUnder(e.getX(), e.getY());

            if (child != null && clickListener != null) {

                clickListener.onLongClick(child, recyclerView.getChildAdapterPosition(child));

            }
        }
    });
}

@Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {

    View child = rv.findChildViewUnder(e.getX(), e.getY());

    if (child != null && clickListener != null && gestureDetector.onTouchEvent(e)) {

        clickListener.onClick(child, rv.getChildAdapterPosition(child));

    }
    return false;
}

@Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}

@Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {

}

public interface ClickListener {

    void onClick(View view, int position);

    void onLongClick(View view, int position);
   }
 }

然后在活动中,覆盖onClick方法.

 recyclerView.addOnItemTouchListener(new RecyclerTouchListener(context, recyclerView, new RecyclerTouchListener.ClickListener() {
        @Override
        public void onClick(View view, int position) {

         //   Toast.makeText(getActivity(), position+ " is selected successfully", Toast.LENGTH_SHORT).show();

                //handle click event

        }

        @Override
        public void onLongClick(View view, int position) {

        }
    }));

通过这种方式,您可以处理recyclerview item click event.