How to upload an image to Firebase storage?

Question

I\'m trying to upload a simple byte array into Firebase storage, but my onFailureListener keeps getting called and logging back to me saying that the upload fai

Answer 1

this method worked for me as if todate:

private void uploadImage(Bitmap bitmap) {
    progressDialog.show();
    final StorageReference ref = storageReference.child("drivers/" + UserDto.getId() + ".jpg");

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

    final UploadTask uploadTask = ref.putBytes(data);
    uploadTask.addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
        @Override
        public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
            progressDialog.dismiss();
            Toast.makeText(ProfileActivity.this, "Uploaded", Toast.LENGTH_SHORT).show();

            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();
                    }
                    return ref.getDownloadUrl();
                }
            }).addOnCompleteListener(new OnCompleteListener<Uri>() {
                @Override
                public void onComplete(@NonNull Task<Uri> task) {
                    if (task.isSuccessful()) {
                        Uri downUri = task.getResult();
                        Log.d("Final URL", "onComplete: Url: " + downUri.toString());
                    }
                }
            });
        }
    }).addOnFailureListener(new OnFailureListener() {
        @Override
        public void onFailure(@NonNull Exception e) {
            progressDialog.dismiss();
            Toast.makeText(ProfileActivity.this, "Failed " + e.getMessage(), Toast.LENGTH_SHORT).show();
        }
    });
}

Answer 2

Simply call this method to store your image to firebase.

 private void storeImageToFirebase() {
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inSampleSize = 8; // shrink it down otherwise we will use stupid amounts of memory
        Bitmap bitmap = BitmapFactory.decodeFile(mCurrentPhotoUri.getPath(), options);
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
        byte[] bytes = baos.toByteArray();
        String base64Image = Base64.encodeToString(bytes, Base64.DEFAULT);
       //For the API less than 28 (Android version 8 )
       //String base64Image = android.util.Base64.encodeToString(bytes, android.util.Base64.DEFAULT);


        // we finally have our base64 string version of the image, save it.
        firebase.child("pic").setValue(base64Image);
        System.out.println("Stored image with length: " + bytes.length);
    }

For more details see these examples:

• Sample 1
• Sample 2

Answer 3

Upload multilple images to Firebase storage.

It is working for me.

using this library

  compile 'com.github.darsh2:MultipleImageSelect:3474549'

At the top

private StorageReference storageRef;
private FirebaseApp app;
private FirebaseStorage storage;

onCreate()

app = FirebaseApp.getInstance();
storage =FirebaseStorage.getInstance(app);

button click action

   Gallary.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {


                Intent intent = new Intent(ChatActivity.this, AlbumSelectActivity.class);
                intent.putExtra(Constants.INTENT_EXTRA_LIMIT, 10);
                startActivityForResult(intent, Constants.REQUEST_CODE);

            }
        });

Activity result

public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == Constants.REQUEST_CODE && resultCode == RESULT_OK) {
        ArrayList<Image> images = data.getParcelableArrayListExtra(Constants.INTENT_EXTRA_IMAGES);
        Uri[] uri=new Uri[images.size()];
        for (int i =0 ; i < images.size(); i++) {
            uri[i] = Uri.parse("file://"+images.get(i).path);
            StorageReference ref = storage.getReference("photos").child(uri[i].getLastPathSegment());
            ref.putFile(uri[i])
                    .addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
                        @Override
                        public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
                            Uri downloadUrl = taskSnapshot.getDownloadUrl();
                            String content = downloadUrl.toString();

                        }
                    })
                    .addOnFailureListener(new OnFailureListener() {
                        @Override
                        public void onFailure(@NonNull Exception exception) {

                        }
                    })
                    .addOnProgressListener(new OnProgressListener<UploadTask.TaskSnapshot>() {
                        @Override
                        public void onProgress(UploadTask.TaskSnapshot taskSnapshot) {
                            //displaying the upload progress
                            double progress = (100.0 * taskSnapshot.getBytesTransferred()) / taskSnapshot.getTotalByteCount();
                            progressDialog.setMessage("Uploaded " + ((int) progress) + "%...");
                        }
                    });

          }
        }

    }

Answer 4

You either need to sign-in the user or change the security rules to allow public access. This is explained in the documentation for Firebase Storage Security.

For initial development, you can change the rules at the Firebase Console to allow public access:

service firebase.storage {
  match /b/project-XXXXXXXXXXXXXX.appspot.com/o {
    match /{allPaths=**} {
      // Provide access to all users
      allow read: if true;
      allow write: if true;
    }
  }
}

Answer 5

I upload images using this code :

private void uploadFile(Bitmap bitmap) {
            FirebaseStorage storage = FirebaseStorage.getInstance();
            StorageReference storageRef = storage.getReferenceFromUrl("Your url for storage");
            StorageReference mountainImagesRef = storageRef.child("images/" + chat_id + Utils.getCurrentTimeStamp() + ".jpg");
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            bitmap.compress(Bitmap.CompressFormat.JPEG, 20, baos);
            byte[] data = baos.toByteArray();
            UploadTask uploadTask = mountainImagesRef.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();
                    sendMsg("" + downloadUrl, 2);
                    Log.d("downloadUrl-->", "" + downloadUrl);
                }
            });

        }

Dependency :

Project Level Gradel : classpath 'com.google.gms:google-services:3.0.0'

App Level Gradel : compile 'com.google.firebase:firebase-storage:9.0.2'