在回收站视图中处理单击按钮

Question

我有带有 OnItemTouchListener 的回收器视图，并且此回收器的每一行都有一个带有 onclick 事件的按钮。

我希望在单击按钮事件后工作，但 OnItemTouchListener 工作。

请帮忙。我的代码。

public class RecyclerViewTouchListener  implements RecyclerView.OnItemTouchListener {


private GestureDetector gestureDetector;
private ClickListener clickListener;

public RecyclerViewTouchListener(Context context, final RecyclerView recyclerView, final ClickListener clickListener) {
    this.clickListener=clickListener;
    gestureDetector=new GestureDetector(new GestureDetector.SimpleOnGestureListener(){

        @SuppressWarnings("deprecation")
        @Override
        public boolean onSingleTapUp(MotionEvent e) {
            View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
            if (child!=null && clickListener!=null){
                clickListener.OnClick(child,recyclerView.getChildPosition(child));
            }
            return true;
        }
    });
}

@Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
    View child = rv.findChildViewUnder(e.getX(), e.getY());
    if (child != null && clickListener != null && gestureDetector.onTouchEvent(e)) {
        //noinspection deprecation
        clickListener.OnClick(child, rv.getChildPosition(child));
    }
    return false;
}

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

}

@Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {

}


public static interface ClickListener {
    void OnClick(View view,int position);

}

}

viewholder 中的这段代码

deleteButton.setOnClickListener(new View.OnClickListener() {
        @Override public void onClick(View v) {
            callbacks.removePosition(getAdapterPosition());
        }
    });

Answer 1

对不起，我的直率，但首先删除此代码。然后你需要创建你自己的 RecyclerAdapter，它会有这样的 sn-p 代码：

View.OnClickListener clickListener;

public void setOnItemClickListener(View.OnClickListener clickListener) {
    this.clickListener = clickListener;
}

@Override
public final void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
    if (onClickListener != null) {
        holder.itemView.setOnClickListener(clickListener);
    }
}

然后在您使用 RecyclerView（Activity、Fragment、自定义 View、自定义 Wrapper for View）的地方，您应该这样做：

List<SomeItem> someItems = getSomeItems();//Receive items for adapter from some place
MyRecyclerAdapter adapter = new MyRecyclerAdapter(someItems);
adapter.setOnItemClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            int position = orderListView.getChildAdapterPosition(v);
            SomeItem item = someItems.get(position);
            Log.v("CLICKED", "Clicking on item(" + position + ", " + item + ")");
        }
    });
recyclerView.setAdapter(adapter);

在您关于单击任何项​​目内的按钮的问题旁边。 定义您自己的 Holder，在您的项目中保留 View 组件的引用：

public static class MyHolder extends RecyclerView.ViewHolder {
    private final Button deleteButton;

    public MyHolder(View itemView) {
        super(itemView);
        deleteButton = (Button) itemView.findViewById(R.id.delete_button);
    }

    public Button getDeleteButton() {
        return deleteButton;
    }
}

然后定义您自己的界面来定义删除按钮的点击。例如：

public interface OnDeleteButtonItemClickListener {
    void onDeleteIsClick(View button, int position); 
}

然后将您的接口附加到适配器：

View.OnClickListener clickListener;
OnDeleteButtonItemClickListener deleteButtonListener;

public void setOnItemClickListener(View.OnClickListener clickListener) {
    this.clickListener = clickListener;
}

public void setDeleteButtonListener(OnDeleteButtonItemClickListener  deleteButtonListener) {
    this.deleteButtonListener= deleteButtonListener;
}

@Override
public final void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
    if (clickListener!= null) {
        holder.itemView.setOnClickListener(clickListener);
    }

    if (deleteButtonListener!= null) {
        MyHolder myHolder = (MyHolder) holder;
        myHolder.getDeleteButton().setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            deleteButtonListener.onDeleteIsClick(v, position)
        }
    });;
    }
}

然后更新您使用 RecyclerView 工作的地方：

List<SomeItem> someItems = getSomeItems();//Receive items for adapter from some place
MyRecyclerAdapter adapter = new MyRecyclerAdapter(someItems);
adapter.setOnItemClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            int position = orderListView.getChildAdapterPosition(v);
            SomeItem item = someItems.get(position);
            Log.v("CLICKED", "Clicking on item(" + position + ", " + item + ")");
        }
    });
adapter.setDeleteButtonListener(new OnDeleteButtonItemClickListener {
        @Override
        public void onDeleteIsClick(View button, int position) {
            SomeItem item = someItems.get(position);
            Log.v("CLICKED", "Clicking on delete button of item(" + position + ", " + item + ")");
        }
});
recyclerView.setAdapter(adapter);