java - 添加从我的 RecycleView 中选择的项目

Question

我只想将从我的 RecycleView 中选择的项目添加到 Firebase，但它会将 RecycleView 中的所有项目添加到 Firebase。

    @Override
public void onAddClick(int position) {
    FoodInfo selectedItem = mfoodinfo.get(position);
    final String selectedKey = selectedItem.getFoodname();

    StorageReference imageRef = firebaseStorage.getReferenceFromUrl(selectedItem.getImageUrl());
    imageRef.delete().addOnSuccessListener(new OnSuccessListener<Void>() {
        @Override
        public void onSuccess(Void aVoid) {

            final DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReference("Order");
            databaseReference.child(selectedKey).setValue(mfoodinfo);
            Toast.makeText(Menu.this, "Order Successful!!", Toast.LENGTH_SHORT).show();
        }
    });

}

有人帮我解决吗？

Answer 1

试试这个代码:(将“mfoodinfo”替换为“selectedItem”)

    @Override
public void onAddClick(int position) {
    final FoodInfo selectedItem = mfoodinfo.get(position);
    final String selectedKey = selectedItem.getFoodname();

    StorageReference imageRef = firebaseStorage.getReferenceFromUrl(selectedItem.getImageUrl());
    imageRef.delete().addOnSuccessListener(new OnSuccessListener<Void>() {
        @Override
        public void onSuccess(Void aVoid) {

            final DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReference("Order");
            databaseReference.child(selectedKey).setValue(selectedItem);
            Toast.makeText(Menu.this, "Order Successful!!", Toast.LENGTH_SHORT).show();
        }
    });

}