uploadFileUsingRetrofit.java

// ApiInterface
    @Multipart
    @POST("user/add-image")
    Call<ResultAPIModel<MemberModelX>> uploadProfileImage(@HeaderMap() Map<String, Object> headerParams, @Part MultipartBody.Part image);


public void uploadImage(String uri) {

        File file = new File(uri);

        RequestBody requestImage = RequestBody.create(MediaType.parse("multipart/form-data"), file);
        MultipartBody.Part part = MultipartBody.Part.createFormData("image", file.getName(), requestImage);

        Call<ResultAPIModel<MemberModelX>> call = apiService.uploadProfileImage(headerMap, part);

        call.enqueue(new Callback<ResultAPIModel<MemberModelX>>() {
            @Override
            public void onResponse(Call<ResultAPIModel<MemberModelX>> call, Response<ResultAPIModel<MemberModelX>> response) {
                ResultAPIModel<MemberModelX> result = response.body();
                if (response.isSuccessful()) {

                    dataFetcherCallBack.Result(result, "uploadImage", true);

                } else {
                    ResultAPIModel<ErrorModel> errorModel = null;
                    try {
                        String error = response.errorBody().string();
                        Log.e("Log", "Log error " + error);
                        if (error != null) {
                            errorModel = new Gson().fromJson(error, new TypeToken<ResultAPIModel<ErrorModel>>() {
                            }.getType());
                        }
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                    if (response.code() == 401) {
                        UtilityApp.logOut();
                        openLoginActivity();
                    } else {
                        dataFetcherCallBack.Result(errorModel, Constants.ERROR, false);
                    }
                }

            }

            @Override
            public void onFailure(Call<ResultAPIModel<MemberModelX>> call, Throwable t) {
                t.printStackTrace();
                if (showProgress)
                    GlobalData.progressDialog(activity, "من فضلك انتظر", false);
                if (t instanceof UnknownHostException || t instanceof NoRouteToHostException) {
                    dataFetcherCallBack.Result(null, Constants.FAIL, false);
                } else {
                    dataFetcherCallBack.Result(null, Constants.FAIL, false);
                }
            }
        });
    }


// in your code add 

// ----- uploadImage(uri, true)