Date and time change listener in Android?

Create an intent filter :

static {
    s_intentFilter = new IntentFilter();
    s_intentFilter.addAction(Intent.ACTION_TIME_TICK);
    s_intentFilter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
    s_intentFilter.addAction(Intent.ACTION_TIME_CHANGED);
}

and a broadcast receiver:

private final BroadcastReceiver m_timeChangedReceiver = new BroadcastReceiver() {                                                                                             
    @Override
    public void onReceive(Context context, Intent intent) {
        final String action = intent.getAction();

        if (action.equals(Intent.ACTION_TIME_CHANGED) ||
                    action.equals(Intent.ACTION_TIMEZONE_CHANGED)) {
            doWorkSon();
        }
    }
};

register the receiver:

public void onCreate() {
    super.onCreate();
    registerReceiver(m_timeChangedReceiver, s_intentFilter);     
}

EDIT:

and unregister it:

public void onDestroy() {
    super.onDestroy();
    unregisterReceiver(m_timeChangedReceiver);     
}