Volley Singletone Class : Multipart

Multipart

private void submitNLPInfo(final String nlpInfo) {

        VolleyMultipartRequest multipartRequest = new VolleyMultipartRequest(Request.Method.POST, "URL HERE", new Response.Listener<NetworkResponse>() {
            @Override
            public void onResponse(NetworkResponse response) {
             
             
            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                
                
            }
        }) {
            @Override
            protected Map<String, String> getParams() {
                Map<String, String> params = new HashMap<>();
                //params.put("phone",MobileNumber);
                params.put("nid", nlpInfo);
                return params;
            }

            @Override
            public Map<String, String> getHeaders() throws AuthFailureError {
                Map<String, String> params = new HashMap<String, String>();
                LogMe.d("acc::", DriverAccToken);
                params.put("authorization", DriverAccToken);
                return params;
            }

            @Override
            protected Map<String, DataPart> getByteData() {
                Map<String, DataPart> params = new HashMap<>();
                // file name could found file base or direct access from real path
                // for now just get bitmap data from ImageView
                params.put("nlp_image", new DataPart("nlp_avatar.jpg", AppHelper.getFileDataFromDrawable(getActivity(), ivNidPassport.getDrawable()), "image/jpeg"));

                return params;
            }
        };

        VolleySingleton.getInstance(getActivity()).addToRequestQueue(multipartRequest);
    }

VolleySingleton.java

package com.muvasia.driver.extras;

import android.content.Context;
import android.graphics.Bitmap;
import android.support.v4.util.LruCache;

import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.toolbox.ImageLoader;
import com.android.volley.toolbox.Volley;


public class VolleySingleton {
    private static VolleySingleton mInstance;
    private RequestQueue mRequestQueue;
    private ImageLoader mImageLoader;
    private static Context mCtx;

    /**
     * Private constructor, only initialization from getInstance.
     *
     * @param context parent context
     */
    private VolleySingleton(Context context) {
        mCtx = context;
        mRequestQueue = getRequestQueue();

        mImageLoader = new ImageLoader(mRequestQueue,
                new ImageLoader.ImageCache() {
                    private final LruCache<String, Bitmap> cache = new LruBitmapCache(5000);

                    @Override
                    public Bitmap getBitmap(String url) {
                        return cache.get(url);
                    }

                    @Override
                    public void putBitmap(String url, Bitmap bitmap) {
                        cache.put(url, bitmap);
                    }
                });
    }

    /**
     * Singleton construct design pattern.
     *
     * @param context parent context
     * @return single instance of VolleySingleton
     */
    public static synchronized VolleySingleton getInstance(Context context) {
        if (mInstance == null) {
            mInstance = new VolleySingleton(context);
        }
        return mInstance;
    }

    /**
     * Get current request queue.
     *
     * @return RequestQueue
     */
    public RequestQueue getRequestQueue() {
        if (mRequestQueue == null) {
            // getApplicationContext() is key, it keeps you from leaking the
            // Activity or BroadcastReceiver if someone passes one in.
            mRequestQueue = Volley.newRequestQueue(mCtx.getApplicationContext());
        }
        return mRequestQueue;
    }

    /**
     * Add new request depend on type like string, json object, json array request.
     *
     * @param req new request
     * @param <T> request type
     */
    public <T> void addToRequestQueue(Request<T> req) {
        getRequestQueue().add(req);
    }

    /**
     * Get image loader.
     * @return ImageLoader
     */
    public ImageLoader getImageLoader() {
        return mImageLoader;
    }
}