android - android firebase realtimedatabase Questions(recycler view, onclick button, remove)

Question

我希望在单击 item1 上的按钮时删除 item1 的数据。但mDatabase.getReference("Choicestore").child(String.valueOf(arrayList.get(position))); 我不知道如何处理这部分。

我希望在单击 item1 上的按钮时删除 item1 的数据。我希望在单击 item2 上的按钮时删除 item2 的数据。

@Override
public void onBindViewHolder(@NonNull final ChoicestoreViewHolder holder, final int position) {

    Glide.with(holder.itemView)
            .load(arrayList.get(position).getChoicestore_img())
            .into(holder.choicestore_img);
    holder.choicestore_name.setText("storename : " + arrayList.get(position).getChoicestore_name());
    holder.choicestore_time.setText("opentime : " + arrayList.get(position).getChoicestore_time());
    holder.choicestore_breaktime.setText("breaktime : " +arrayList.get(position).getChoicestore_breaktime());
    holder.choicestore_number.setText("storenumber : " + arrayList.get(position).getChoicestore_number());

    holder.choicestore_delete.setOnClickListener(new View.OnClickListener(){
        @Override
        public void onClick(View v) {

            mDatabase = FirebaseDatabase.getInstance();
            dataRef = mDatabase.getReference("Choicestore").child(String.valueOf(arrayList.get(position)));

            dataRef.removeValue();

        }
    });
}

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我使用下面的答案进行编码，但出现此错误。

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错误图像

@Override
public void onBindViewHolder(@NonNull final ChoicestoreViewHolder holder, final int position) {

    Glide.with(holder.itemView)
            .load(arrayList.get(position).getChoicestore_img())
            .into(holder.choicestore_img);
    holder.choicestore_name.setText("매장명 : " + arrayList.get(position).getChoicestore_name());
    holder.choicestore_time.setText("운영시간 : " + arrayList.get(position).getChoicestore_time());
    holder.choicestore_breaktime.setText("브레이크타임 : " +arrayList.get(position).getChoicestore_breaktime());
    holder.choicestore_number.setText("매장번호 : " + arrayList.get(position).getChoicestore_number());

    holder.choicestore_delete.setOnClickListener(new View.OnClickListener(){

        @Override
        public void onClick(View view) {
            final String NAme= arrayList.get(position).getChoicestore_name();


            dataRef.orderByChild("choicestore_name")
                    .equalTo( NAme )
                    .addListenerForSingleValueEvent(new ValueEventListener() {
                        @Override
                        public void onDataChange(DataSnapshot dataSnapshot) {
                            for (DataSnapshot childSnapshot : dataSnapshot.getChildren()) {
                                String clubkey = childSnapshot.getKey();

                                Log.d(TAG, "KEY = " + clubkey );


                                childSnapshot.getRef().removeValue();


                            }

                        }

                        @Override
                        public void onCancelled(@NonNull DatabaseError databaseError) {

                        }

                    });
        }
    });



}

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这是发生错误的代码。

标签： androidfirebase-realtime-databaseandroid-recyclerview

Answer 1

里面holder.choicestore_delete.setOnClickListener

final String NAme= arrayList.get(position).getChoicestore_name();


                            mDatabasesliderRef.orderByChild("choicestore_name")
                                    .equalTo( NAme )
                                    .addListenerForSingleValueEvent(new ValueEventListener() {
                                        @Override
                                        public void onDataChange(DataSnapshot dataSnapshot) {
                                            for (DataSnapshot childSnapshot : dataSnapshot.getChildren()) {
                                                String clubkey = childSnapshot.getKey();

                                                Log.d( TAG, "KEY = " + clubkey );


                                                    childSnapshot.getRef().removeValue();


                                            }

                                        }

                                        @Override
                                        public void onCancelled(@NonNull DatabaseError databaseError) {

                                        }

                                    });