android - 如何检查在 recyclerview 子项中单击了哪个项目

Question

recyclers child view包含两个可点击的对象，一个是一组TextViews和ImageView，另一个是一个CheckBox(引用 - Android Recyclerview Multiple onclick items)我想看看是否在 child 身上点击了复选框。如果是这样，那么我更改 CheckBox 的状态。否则，我发起另一项 Activity (为了结果)。上面的链接显示了处理 View 持有者中的点击。我想在设置 RecyclerView 的其他 Activity 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) {

        }
    });

有没有一种方法可以处理对 Activity 中子项(而不是 ViewHolder)中的多个项目的点击？

Answer 1

您始终可以创建一个将事件传递给 Activity 的接口(interface)。例如

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

然后在你的适配器中

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

然后你像这样调用它

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;
            }

就是这样 :) 希望对您有所帮助，祝您好运