How to use Android's Handlers

Android SDK - Handler

import android.os.Handler;

    private static final int MYACTION = 1;
    private static final int DELAY = 1000; // ms

    private final Handler mHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
                case MYACTION:
                    // do something
                    break;
            }
        }
    };

    private void sendMessage(){
        Message msg = mHandler.obtainMessage(MYACTION);
        mHandler.removeMessages(MYACTION);
        mHandler.sendMessageDelayed(msg, DELAY);
    }