Java tutorial
//package com.java2s; import android.os.Handler; import android.os.Looper; public class Main { private static Handler mApplicationHandler = null; public static Handler getApplicationHandler(Runnable runnable) { if (mApplicationHandler == null) { Looper.prepare(); mApplicationHandler = new Handler(Looper.getMainLooper()); Looper.loop(); } return mApplicationHandler; } }