gistfile1.java

package com.myapp;

import android.app.Application;

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

public class MyApplication extends Application {
	private static RequestQueue requestQueue;
	private static MyApplication appInstance = null;

	public static MyApplication getInstance() {
		return appInstance;
	}

	public MyApplication() {
		super();
		appInstance = this;
	}
	
	public static synchronized RequestQueue getNetworkRequestQueue () {
		if (MyApplication.requestQueue == null) {
			MyApplication.requestQueue = Volley.newRequestQueue(appInstance);
		}

		return MyApplication.requestQueue;
	}
}