Question

我正在尝试将图像上传到Firebase存储，并且根据需要将其完美存储，但是在Firebase数据库中，我面临2个问题

当我上传图像时，下载的Url与我在存储中看到的不一样。好像是什么喜欢 ""com.google.android.gms.tasks.zzu@590df7c"

上载图像的详细信息未附加到已登录的用户节点。而是将其上传到单独节点中的数据库。

public class SecondActivity extends AppCompatActivity {
private static final int CHOOSE_IMAGE = 101;
String Database_Path = "users";
String Storage_Path = "profilepics/";
TextView textView;
private ImageView imageView;
EditText editText;
Uri uriProfileImage;
String downloadUri;
ProgressBar progressBar;
 FirebaseAuth mAuth;
String imageUrl;
Button UploadButton;


StorageReference storageReference;
DatabaseReference databaseReference;


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

mAuth = FirebaseAuth.getInstance();

editText = (EditText) findViewById(R.id.editTextDisplayName);
imageView = (ImageView) findViewById(R.id.imageView);
UploadButton = (Button)findViewById(R.id.buttonSave);
progressBar = (ProgressBar) findViewById(R.id.progressbar);


storageReference = FirebaseStorage.getInstance().getReference();
databaseReference = FirebaseDatabase.getInstance().getReference(Database_Path);

progressBar = new ProgressBar(SecondActivity.this)
   imageView.setOnClickListener(new View.OnClickListener() {
         @Override
      public void onClick(View v) {
            showimagechooser();
    }
});

UploadButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {

        // Calling method to upload selected image on Firebase storage.

        startActivity(new Intent(SecondActivity.this, DisplayProfile.class));

    }
});
 }

private void showimagechooser() {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select profile Image"), CHOOSE_IMAGE);

 }
 @Override
 protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);

if (requestCode == CHOOSE_IMAGE && resultCode == RESULT_OK && data != null && data.getData() != null) {
    uriProfileImage = data.getData();
    try {
        Bitmap bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uriProfileImage);
        imageView.setImageBitmap(bitmap);
        uploadImageToFirebaseStorage(bitmap);

       } catch (IOException e) {
        e.printStackTrace();
       }
    }
 }

 private void uploadImageToFirebaseStorage(Bitmap bitmap) {
final String TempImageName = editText.getText().toString().trim();

FirebaseStorage storage = FirebaseStorage.getInstance();
final StorageReference storageRef = storage.getReference();
String userID=mAuth.getCurrentUser().getUid();
System.out.println(userID);
// this is how you set your desired name for the image
final StorageReference ImagesRef = storageRef.child("images/"+mAuth.getCurrentUser().getUid()+".jpg");


ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 20, baos);
byte[] data = baos.toByteArray();
final UploadTask uploadTask = ImagesRef.putBytes(data);

uploadTask.addOnFailureListener(new OnFailureListener() {
    @Override
    public void onFailure(@NonNull Exception exception) {
        Log.i("whatTheFuck:",exception.toString());
    }
}).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>(){
                            @RequiresApi(api = Build.VERSION_CODES.KITKAT)
                            @Override
                            public void onSuccess(final UploadTask.TaskSnapshot taskSnapshot) {
                                Task<Uri> urlTask = uploadTask.continueWithTask(new Continuation<UploadTask.TaskSnapshot, Task<Uri>>() {
                                    @Override
                                    public Task<Uri> then(@NonNull Task<UploadTask.TaskSnapshot> task) {
                                        if (!task.isSuccessful()) {
                                            Log.i("problem", task.getException().toString());
                                        }

                                        return ImagesRef.getDownloadUrl();
                                    }
                                }).addOnCompleteListener(new OnCompleteListener<Uri>() {
                                    @Override
                                    public void onComplete(@NonNull Task<Uri> task) {
                                        if (task.isSuccessful()) {
                                            Uri downloadUri = task.getResult();

                                            DatabaseReference ref = FirebaseDatabase.getInstance().getReference("users").child(mAuth.getCurrentUser().getUid());
                                            ref.child("imageURL").setValue(downloadUri.toString());
                                            ref.child("imageName").setValue(TempImageName);


                                        } else {
                                            Log.i("wentWrong","downloadUri failure");
                                        }
                                    }
                                });
                            }
});

 }
 }

这里是到我的数据库的链接 Database image

预先感谢

Answer 1

是的@Yupi是正确的，您没有正确获取图片的正确网址。为了获得正确的上传图像的URL，可以使用如下代码：

private void uploadFile(Bitmap bitmap) {

        FirebaseStorage storage = FirebaseStorage.getInstance();
        final StorageReference storageRef = storage.getReference();

         // this is how you set your desired name for the image
        final StorageReference ImagesRef = storageRef.child("images/"+mAu.getCurrentUser().getUid()+".jpg");


        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.JPEG, 20, baos);
        byte[] data = baos.toByteArray();
        final UploadTask uploadTask = ImagesRef.putBytes(data);

        uploadTask.addOnFailureListener(new OnFailureListener() {
            @Override
            public void onFailure(@NonNull Exception exception) {
                Log.i("whatTheFuck:",exception.toString());
            }
        }).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
            @RequiresApi(api = Build.VERSION_CODES.KITKAT)
            @Override
            public void onSuccess(final UploadTask.TaskSnapshot taskSnapshot) {
               // taskSnapshot.getMetadata() contains file metadata such as size, content-type, and download URL.

                Task<Uri> urlTask = uploadTask.continueWithTask(new Continuation<UploadTask.TaskSnapshot, Task<Uri>>() {
                    @Override
                    public Task<Uri> then(@NonNull Task<UploadTask.TaskSnapshot> task) {
                        if (!task.isSuccessful()) {
                            Log.i("problem", task.getException().toString());
                        }

                        return ImagesRef.getDownloadUrl(); 
                    }
                }).addOnCompleteListener(new OnCompleteListener<Uri>() {
                    @Override
                    public void onComplete(@NonNull Task<Uri> task) {
                        if (task.isSuccessful()) {
                            Uri downloadUri = task.getResult();

                            DatabaseReference ref = FirebaseDatabase.getInstance().getReference().child("users").child(mAu.getCurrentUser().getUid());


                            Log.i("seeThisUri", downloadUri.toString());// This is the link or name you should use to save or set the image

                            ref.child("imageURL").setValue(downloadUri.toString());


                        } else {
                            Log.i("wentWrong","downloadUri failure");
                        }
                    }
                });
             }
        });

    }

此代码还包含有关如何将网址上传到Firebase数据库的实例，我认为这可能会对您的代码有所帮助。

Answer 2

我认为您没有正确上传图片，这意味着您没有获取真实的图片网址。我认为您缺少代码的一部分。因此，在onSuccess(UploadTask.TaskSnapshot taskSnapshot)内添加：

storageReference2nd.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
                        @Override
                        public void onSuccess(Uri uri) {
                            String imageUrl = uri.toString() // this is your image url 
                           // which you want to send on database
                        }
                    });

如何在Firebase中将图像名称和下载URL附加到已登录的用户节点

2 个答案: