java - 无法从 firebase 检索图像

Question

我正在尝试检索我在 firebase 中手动上传到 imageview 中的图像，但无法检索，我授予了互联网权限，检查了规则，也没有在 logcat 中识别任何内容。代码是:

public class homepage extends AppCompatActivity {

    private StorageReference mStorage;
    private ImageView mImage;
    private static final int IMAGE_CODE=1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_homepage);

        mImage = (ImageView)findViewById(R.id.g_image);

        mStorage = FirebaseStorage.getInstance().getReference();
}
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode==IMAGE_CODE && resultCode==RESULT_OK)
        {
            Uri uri = data.getData();
            StorageReference filepath = mStorage.child("Products");
            filepath.putFile(uri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
                @Override
                public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
                    Uri downloadUri = taskSnapshot.getDownloadUrl();
                    Picasso.with(homepage.this).load(downloadUri).fit().centerCrop().into(mImage);
                }
            });
        }
    }
}

Answer 1

试试这个:

StorageReference storageref= FirebaseStorage.getInstance().getReference(); 
pathReference=storageref.child("Products/images.png"); 
pathReference.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() { 
  @Override 
public void onSuccess(Uri uri) { 
        //got the url
     } 
}).addOnFailureListener(new OnFailureListener() {
  @Override
 public void onFailure(@NonNull Exception exception) {
    // Handle any errors
  } 
});

更多信息在这里:

https://firebase.google.com/docs/storage/android/download-files#download_data_via_url