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

请点击此链接 - 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

根据最新的 Firebase 更改，以下是更新后的代码：

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 3

这在最新的 firebase 版本上运行良好

UploadTask uploadTask = ref.putBytes(data);
uploadTask.addOnSuccessListener(new OnSuccessListener<TaskSnapshot>() {

        @Override
        public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
            taskSnapshot.getStorage().getDownloadUrl().addOnCompleteListener(
                    new OnCompleteListener<Uri>() {

                           @Override
                            public void onComplete(@NonNull Task<Uri> task) {
                            String fileLink = task.getResult().toString();
                            //next work with URL

                            }
                        });

Answer 4

过去使用的 firebase 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 5

taskSnapshot.getMetadata().getDownloadUrl();不推荐使用上述方法，并作为替代提供此替代方法：

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 6

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()


                }
            }