如何在將圖像上傳到Firebase後獲取圖像URL？

Question

我正在製作一個用戶在Firebase存儲上上傳圖片的應用程序。上傳圖片後，我想將圖片的網址和其他詳細信息上傳到我自己的API中。我怎樣才能得到用戶剛剛上傳的圖像的Uri。 This教程教導如何做上傳，但不顯示如何獲取圖像URL。我嘗試了所有的教程，但沒有顯示我想要的東西。

Answer 1

根據the documentation，您可以撥打.getDownloadUrl中的.onSuccessListener來獲取圖片網址。

下面是從文檔的例子：

// Get the data from an ImageView as bytes 
imageView.setDrawingCacheEnabled(true); 
imageView.buildDrawingCache(); 
Bitmap bitmap = imageView.getDrawingCache(); 
ByteArrayOutputStream baos = new ByteArrayOutputStream(); 
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos); 
byte[] data = baos.toByteArray(); 

UploadTask uploadTask = mountainsRef.putBytes(data); 
uploadTask.addOnFailureListener(new OnFailureListener() { 
    @Override 
    public void onFailure(@NonNull Exception exception) { 
     // Handle unsuccessful uploads 
    } 
}).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() { 
    @Override 
    public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) { 
     // taskSnapshot.getMetadata() contains file metadata such as size, content-type, and download URL. 
     Uri downloadUrl = taskSnapshot.getDownloadUrl(); 
    } 
}); 

Answer 2

您將獲得的回調的onSuccess的下載網址。檢查以下代碼

public static void storeInFirebase(Context context, Uri uri, String type) { 

StorageReference riversRef = null; 
        mStorageRef = FirebaseStorage.getInstance().getReference(); 
        //to create a separate folder with all the pictures uploaded 
     riversRef = mStorageRef.child("pictures/" + "unique_value"); 

        UploadTask uploadTask = riversRef.putFile(uri); 
        uploadTask.addOnFailureListener(new OnFailureListener() { 
      @Override 
      public void onFailure(@NonNull Exception exception) { 
       DialogUtils.dismissProgressDialog(); 
       // Handle unsuccessful uploads 
      } 
     }).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() { 
      @Override 
      public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) { 
       // taskSnapshot.getMetadata() contains file metadata such as size, content-type, and download URL. 
       downloadUrl = taskSnapshot.getDownloadUrl(); 
       Log.d("downloadUrl", "" + downloadUrl); 

      } 
     }); 
       }