Upload image to server using okhttp

Question

I'm using OKhttp for network requests. Trying to upload an image to a server. This is the way I tried, but it's not working. What am I doing wrong?

client = new OkHttpClient.Builder()
                .build();

        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
        byte[] byteArray = stream.toByteArray();
        String encodedImage = Base64.encodeToString(byteArray, Base64.DEFAULT);

        RequestBody requestBody = new MultipartBody.Builder()
                .setType(MultipartBody.FORM)
                .addFormDataPart("", "",
                        RequestBody.create(MediaType.parse("image/*"), encodedImage))
                .build();

        Request request = new Request.Builder()
                .url(serverUrl)
                .post(requestBody)
                .build();

        client.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {

            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {

            }
        });
    }

Answer 1

You don't need to base64-encode the image data, just use byteArray:

.addFormDataPart("image", "filename.jpg",
                 RequestBody.create(MediaType.parse("image/*jpg"), byteArray))