如何在Android数据绑定中使用recyclerview填充Firebase存储图像

Question

我有一个recyclerview，通过数据绑定来填充数据。以前我在Picasso自定义绑定适配器的帮助下填充图像，但是现在我正在升级到firebase存储，但没有让代码使用recyclerview填充它。请帮助。

Answer 1

下面是一个示例，我们存储指向存储的URL，然后使用Glide将其下载到回收站视图中。

// Chat message text can contain a download URL or text 
public class ChatMessage { 
    public String name; 
    public String message; 

    public ChatMessage() { 
    } 

    public ChatMessage(String name, String message) { 
     this.name = name; 
     this.message = message; 
    } 
} 

// Use a custom ViewHolder populated from the chat message 
public class ChatMessageViewHolder extends RecyclerView.ViewHolder { 
    private static final String TAG = "ChatMessageViewHolder"; 
    private final Activity activity; 

    TextView name, message; 
    ImageView image; 

    public ChatMessageViewHolder(Activity activity, View itemView) { 
     super(itemView); 
     this.activity = activity; 
     name = (TextView) itemView.findViewById(android.R.id.text1); 
     message = (TextView) itemView.findViewById(android.R.id.text2); 
     image = new ImageView(activity); 
     ((ViewGroup)itemView).addView(image); 

    } 

    public void bind(ChatMessage chat) { 
     name.setText(chat.name); 
     if (chat.message.startsWith("https://firebasestorage.googleapis.com/") || chat.message.startsWith("content://")) { 
      message.setVisibility(View.INVISIBLE); 
      image.setVisibility(View.VISIBLE); 
      // Use Glide (you could use Picaso) to load the image 
      Glide.with(activity) 
        .load(chat.message) 
        .into(image); 
     } 
     else { 
      message.setVisibility(View.VISIBLE); 
      image.setVisibility(View.GONE); 
      message.setText(chat.message); 
     } 
    } 
} 

This gist和this video细节如何做到这一点的一个完整的应用程序