android - 如何从android中的firebase数据库中检索数据

Question

从 Firebase 检索图像不起作用？嗨，我正在从 Firebase 上传和检索图像。我已经成功地完成了上传部分，但是在为检索部分做的时候。我遇到了一个问题，我无法从 Firebase 获取图像。我正在使用毕加索版本：2.5.2

QuoteList.java

public class QuoteList extends AppCompatActivity {

    private StorageReference storageRef;

  private   RecyclerView  mRecyclerView;
  private DatabaseReference mReference;



    @Override
    protected void onCreate(Bundle savedInstanceState) {


   super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_quote_list);

    final LinearLayoutManager layoutManager = new LinearLayoutManager(this);
    layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
    mRecyclerView = findViewById(R.id.quotes_list);
    mRecyclerView.setLayoutManager(layoutManager);

    mReference = FirebaseDatabase.getInstance().getReference().child("Quotes");
}


@Override
protected void onStart() {
    super.onStart();

    FirebaseRecyclerAdapter<Quote, QuoteViewHolder> firebaseRecyclerAdapter =
            new FirebaseRecyclerAdapter<Quote, QuoteViewHolder>(
                    Quote.class,
                    R.layout.quote_row,
                    QuoteViewHolder.class,
                    mReference
            ) {

                @Override
                protected void populateViewHolder(QuoteViewHolder viewHolder , Quote model , int position) {

                        viewHolder.setQuotes(model.getQuotes());
                        viewHolder.setQuoteAuthor(model.getQuote_Author());
                        viewHolder.setImage(getApplicationContext(),model.getImages());


                }
            };

    mRecyclerView.setAdapter(firebaseRecyclerAdapter);

}

public class QuoteViewHolder extends RecyclerView.ViewHolder{

    View mView;

    public QuoteViewHolder(View itemView) {
        super(itemView);

        mView = itemView;
    }

    public void setQuotes(String Quote){
        TextView post_quote = (TextView) mView.findViewById(R.id.post_quote);
        post_quote.setText(Quote);
    }

    public void setQuoteAuthor(String QuoteAuthor){
        TextView post_quoteAuthor = (TextView) mView.findViewById(R.id.post_author);
        post_quoteAuthor.setText(QuoteAuthor);
    }

    public void setImage(Context ctx, String image){
        ImageView post_image = (ImageView) mView.findViewById(R.id.post_image);
        Picasso.with(ctx).load(image).into(post_image);

    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {

    getMenuInflater().inflate(R.menu.main_menu, menu);
    return super.onCreateOptionsMenu(menu);
}

}

作为参考，我使用了 Youtube链接。

标签： androidfirebaseandroid-studiofirebase-realtime-databasepicasso