Retrofit Uploading multiple images to a single key

Question

I am using Retrofit to upload images to my server. Here I need to upload multiple images for a single key. I have tried with Postman web client it is working well. Here is a

Answer 1

I wasted a lot timing on accepted ans. but that didn't work in my case. So after a lot of search i found this one. And its working 100% in my case.

private void uploadMultiFile() {


    ArrayList filePaths = new ArrayList<>();
    filePaths.add("storage/emulated/0/DCIM/Camera/IMG_20170802_111432.jpg");
    filePaths.add("storage/emulated/0/Pictures/WeLoveChat/587c4178e4b0060e66732576_294204376.jpg");
    filePaths.add("storage/emulated/0/Pictures/WeLoveChat/594a2ea4e4b0d6df9153028d_265511791.jpg");

    MultipartBody.Builder builder = new MultipartBody.Builder();
    builder.setType(MultipartBody.FORM);

    builder.addFormDataPart("user_name", "Robert");
    builder.addFormDataPart("email", "mobile.apps.pro.vn@gmail.com");

    // Map is used to multipart the file using okhttp3.RequestBody
    // Multiple Images
    for (int i = 0; i < filePaths.size(); i++) {
        File file = new File(filePaths.get(i));
        builder.addFormDataPart("file[]", file.getName(), RequestBody.create(MediaType.parse("multipart/form-data"), file));
    }


    MultipartBody requestBody = builder.build();
    Call call = uploadService.uploadMultiFile(requestBody);
    call.enqueue(new Callback() {
        @Override
        public void onResponse(Call call, Response response) {

            Toast.makeText(MainActivity.this, "Success " + response.message(), Toast.LENGTH_LONG).show();




        }

        @Override
        public void onFailure(Call call, Throwable t) {

            Log.d(TAG, "Error " + t.getMessage());
        }
    });


}

and this is interface

@POST("/upload_multi_files/MultiPartUpload.php")
Call uploadMultiFile(@Body RequestBody file);