如何检查在recyclerview子项中单击了哪个项目

Question

recyclers子视图包含两个可点击的对象,一个是一组TextViews和ImageView,另一个是CheckBox(请参阅 - Android Recyclerview Multiple onclick项目)我想看看是否在孩子上点击了复选框.如果是这样,那么我改变了CheckBox的状态.否则,我发起另一项活动(结果).上面的链接显示了在视图持有者中处理点击次数.我想在我设置RecyclerView的其他活动中处理点击.

    //the view needs a listener
    final GestureDetector mGestureDetector = new GestureDetector(getActivity(), new GestureDetector.SimpleOnGestureListener() {

        @Override public boolean onSingleTapUp(MotionEvent e) {
            return true;
        }

    });


    mRecyclerView.addOnItemTouchListener(new RecyclerView.OnItemTouchListener() {
        @Override
        public boolean onInterceptTouchEvent(RecyclerView recyclerView, MotionEvent motionEvent) {
            View child = recyclerView.findChildViewUnder(motionEvent.getX(),motionEvent.getY());

            if(child!=null && mGestureDetector.onTouchEvent(motionEvent)){

                if(child.getId() == R.id.chk_box_pin){
                        //checking, this didn't work
                }
                else {
                    TextView idView = (TextView) child.findViewById(R.id.note_id_txt_vw);
                    if (DEBUG) Toast.makeText(getActivity(),
                            "ID is " + idView.getText().toString(), Toast.LENGTH_SHORT).show();
                    startEditNoteActivity(ActivityContract.ACTIVITY_EDIT, idView.getText().toString());
                }
                return true;
            }

            return false;
        }

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

        }
    });

有没有办法可以处理活动中孩子内部多个项目的点击(而不是ViewHolder)？

Answer 1

您始终可以创建一个将事件传递给活动的界面.所以举个例子

public interface ChildItemClickListener { 
    public void onClick(View v, int position);
}

然后在你的适配器

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
   /* your code*/
   ...
   private ChildItemClickListener listener;
   ...
   */
   public void setChildItemClickListener(ChildItemClickListener listener) {
       this.listener = listener;
   }
}

然后你这样调用它

if(child!=null && mGestureDetector.onTouchEvent(motionEvent)) {
                if(child.getId() == R.id.chk_box_pin){
                        //checking, this didn't work
                }
                else {
                    TextView idView = (TextView) child.findViewById(R.id.note_id_txt_vw);
                    if (DEBUG) Toast.makeText(getActivity(),
                            "ID is " + idView.getText().toString(), Toast.LENGTH_SHORT).show();
                    startEditNoteActivity(ActivityContract.ACTIVITY_EDIT, idView.getText().toString());
                }
                if(listener != null)
                    listener.onClick(YOUR_VIEW, POSITION);
                return true;
            }

那将是它:)希望它有所帮助,祝你好运