Firebase如何从firebase存储中获取Image Url？

Question

现在我使用以下代码从Storage of Firebase获取图像：

mStoreRef.child("photos/" + model.getBase64Image())
          .getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
                        @Override
                        public void onSuccess(Uri uri) {
                            // Got the download URL for 'photos/profile.png'

                        }
                    }).addOnFailureListener(new OnFailureListener() {
                        @Override
                        public void onFailure(@NonNull Exception exception) {
                            // Handle any errors
                            Toast.makeTextthis, "image not dowloaded", Toast.LENGTH_SHORT).show();
                        }
                    });

有可能获得图像中显示的URL .. ???

Answer 1

点击此链接-https://firebase.google.com/docs/storage/android/download-files#download_data_via_url

    storageRef.child("users/me/profile.png").getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
        @Override
        public void onSuccess(Uri uri) {
            // Got the download URL for 'users/me/profile.png'
            Uri downloadUri = taskSnapshot.getMetadata().getDownloadUrl();
            generatedFilePath = downloadUri.toString(); /// The string(file link) that you need
        }
    }).addOnFailureListener(new OnFailureListener() {
        @Override
        public void onFailure(@NonNull Exception exception) {
            // Handle any errors
        }
    });

Answer 2

在过去，火基使用getMetadata().getDownloadUrl()，今天他们使用getDownloadUrl()

应该这样使用：

.addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
    @Override
    public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
        String image = taskSnapshot.getDownloadUrl().toString());
    }
});

Answer 3

根据最新的firebase更改，这里是更新的代码：

File file = new File(String.valueOf(imageUri));
FirebaseStorage storage = FirebaseStorage.getInstance();
StorageReference storageRef = storage.getReference().child("images");

    storageRef.child(file.getName()).putFile(imageUri)
            .addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
                @Override
                public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
                    pd.dismiss();
                    Toast.makeText(MyProfile.this, "Image Uploaded Successfully", Toast.LENGTH_SHORT).show();
                    Task<Uri> downloadUri = taskSnapshot.getStorage().getDownloadUrl();

                   if(downloadUri.isSuccessful()){
                    String generatedFilePath = downloadUri.getResult().toString();
                    System.out.println("## Stored path is "+generatedFilePath);
                }}
            })
            .addOnFailureListener(new OnFailureListener() {
                @Override
                public void onFailure(@NonNull Exception e) {
                    pd.dismiss();                     
                }
            });
}

Answer 4

上面的方法taskSnapshot.getMetadata().getDownloadUrl();已被弃用，而substitute提供了这种替代方案：

final StorageReference ref = storageRef.child("images/mountains.jpg");
uploadTask = ref.putFile(file);

Task<Uri> urlTask = uploadTask.continueWithTask(new 
  Continuation<UploadTask.TaskSnapshot, Task<Uri>>() {
     @Override
      public Task<Uri> then(@NonNull Task<UploadTask.TaskSnapshot> task) throws Exception {
    if (!task.isSuccessful()) {
        throw task.getException();
    }

    // Continue with the task to get the download URL
    return ref.getDownloadUrl();
}
}).addOnCompleteListener(new OnCompleteListener<Uri>() {
@Override
public void onComplete(@NonNull Task<Uri> task) {
    if (task.isSuccessful()) {
        Uri downloadUri = task.getResult();
    } else {
        // Handle failures
        // ...
    }
  }
});

Answer 5

这就是我在kotlin android中获取下载链接的方式。

 ref.putFile(filePath!!)
            .addOnSuccessListener {

                val result = it.metadata!!.reference!!.downloadUrl;
                result.addOnSuccessListener {

                   var imageLink = it.toString()


                }
            }

Answer 6

 //kotlin

var uri:Uri
    uploadTask.addOnSuccessListener {t ->
        t.metadata!!.reference!!.downloadUrl.addOnCompleteListener{task ->
            uri = task.result!!

        }
    }