使用firebaseui將firebase數據庫中的子數據添加到cardview中

Question

我希望我的卡片視圖顯示我的firebase數據庫中的reviewTitle和reviewDetails。我應該怎麼做？我在想將此代碼添加

'.child(userID).child("Reviews").child("reviewTitle")'和'.child(userID).child("Reviews").child("reviewDetails")'

，但我不知道如何將它添加到我的代碼（我用firebaseui）。我的卡片視圖目前顯示空白。或者如果有另一套我應該使用的代碼，請讓我知道。

這是我的火力數據庫目前的樣子： here

這是我的代碼：

我的片段

public class MyReviews extends Fragment { 

    private RecyclerView rv; 
    private FirebaseAuth firebaseAuth; 
    private DatabaseReference mDatabase; 

    LinearLayoutManager nwlinearLayoutManager; 

    private FirebaseRecyclerAdapter<ReviewInformation, ReviewsHolder> mFirebaseAdapter; 

    public MyReviews() { 

    } 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 

     View rootView = inflater.inflate(R.layout.fragment_my_reviews, container, false); 

     rv = rootView.findViewById(R.id.rv_recycler_view); 
     rv.setHasFixedSize(true); 
     nwlinearLayoutManager = new LinearLayoutManager(getActivity()); 
     nwlinearLayoutManager.setStackFromEnd(true); 


     firebaseAuth = FirebaseAuth.getInstance(); 
     FirebaseUser user = firebaseAuth.getCurrentUser(); 
     String userID = user.getUid(); 
     mDatabase = FirebaseDatabase.getInstance().getReference(); 
     Log.i("value1: ", mDatabase.toString()); 

     mFirebaseAdapter = new FirebaseRecyclerAdapter<ReviewInformation, ReviewsHolder>(
       ReviewInformation.class, 
       R.layout.card_item, 
       ReviewsHolder.class, 
       mDatabase) { 
      @Override 
      public void populateViewHolder(ReviewsHolder holder, ReviewInformation chat, int position) { 
       holder.reviewTitle.setText(chat.getReviewTitle()); 
       holder.reviewDetails.setText(chat.getReviewDetails()); 
      } 
     }; 

     mFirebaseAdapter.registerAdapterDataObserver(new RecyclerView.AdapterDataObserver(){ 
      @Override 
      public void onItemRangeInserted(int positionStart, int itemCount){ 
       super.onItemRangeInserted(positionStart, itemCount); 
       int newsCount = mFirebaseAdapter.getItemCount(); 
       int lastVisiblePosition = nwlinearLayoutManager.findLastVisibleItemPosition(); 
       if(lastVisiblePosition == -1 || (positionStart>= (newsCount -1) && lastVisiblePosition == (positionStart -1))){ 
        rv.scrollToPosition(positionStart); 
       } 
      } 
     }); 
     rv.setLayoutManager(nwlinearLayoutManager); 
     rv.setAdapter(mFirebaseAdapter); 
     mFirebaseAdapter.notifyDataSetChanged(); 


     return rootView; 
    } 

    public static class ReviewsHolder extends RecyclerView.ViewHolder { 

     public TextView reviewTitle; 
     public TextView reviewDetails; 
     ImageView img; 
     public ReviewsHolder(View itemView) { 
      super(itemView); 

      this.reviewTitle= itemView.findViewById(R.id.tv_text); 
      this.reviewDetails= itemView.findViewById(R.id.tv_blah); 
      //img= itemView.findViewById(R.id.beachImage); 


     } 
    } 
} 

我的數據

public class ReviewInformation { 

    public String reviewTitle; 
    public String reviewDetails; 

    public ReviewInformation() { 

    } 

    public ReviewInformation(String reviewTitle, String reviewDetails) { 
     this.reviewTitle = reviewTitle; 
     this.reviewDetails = reviewDetails; 
    } 

    public String getReviewTitle() { 
     return reviewTitle; 
    } 

    public void setReviewTitle(String reviewTitle) { 
     this.reviewTitle = reviewTitle; 
    } 

    public String getReviewDetails() { 
     return reviewDetails; 
    } 

    public void setReviewDetails(String reviewDetails) { 
     this.reviewDetails = reviewDetails; 
    } 
} 

Answer 1

你有以引用孩子

mDatabase = FirebaseDatabase.getInstance().getReference().child("Reviews"); 

希望這將工作