Question

我在recyclerview中显示json数据。当我点击recyclerview的任何项目时，它应该显示一些新数据。它工作正常，但问题是，当我点击它排队，如果我一个接一个地点击两个项目，recyclerview将显示两次项目。如何解决这个问题？

我尝试通过在完成单击后设置addOnItemTouchListener null，但是在下次单击时显示空指针异常。

我的点击监听器课程如下：

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.getChildPosition(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.getChildPosition(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);
    }
}

Answer 1

你也可以使用下面的循环视图点击监听器，这是你可以使用它。

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

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

    public void onLongItemClick(View view, int position);
}

GestureDetector mGestureDetector;

public RecyclerOnClickListener(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 child = recyclerView.findChildViewUnder(e.getX(), e.getY());
            if (child != null && mListener != null) {
                mListener.onLongItemClick(child, recyclerView.getChildAdapterPosition(child));
            }
        }
    });
}

@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 true;
    }
    return false;
}

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

@Override
public void onRequestDisallowInterceptTouchEvent (boolean disallowIntercept){}

}

在Activity中你也可以像这样使用它

recyclerview_productList.addOnItemTouchListener(
            new RecyclerOnClickListener(AgentCustomerActivity.this, recyclerview_productList, new RecyclerOnClickListener.OnItemClickListener() {
                @Override
                public void onItemClick(View view, int position) {


                    Intent intent = new Intent(AgentCustomerActivity.this, AgentCutomerOrderDetailActivity.class);
                    intent.putExtra("agent_cutomerId", list.get(position).getCustomerId());
                    intent.putExtra("agent_cutomerName", list.get(position).getCustomerName());
                    startActivity(intent);
                    overridePendingTransition(R.anim.fade_in, R.anim.fade_out);
                }

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

                }
            }));

在recyclerview中排队的addOnItemTouchListener

1 个答案: