Is there an android event listener for change in the timezone of the device?

Question

I have an android application. Here whenever the user changes the device timezone, I want a event listener to notify me? How can I accomplish it?

Answer 1

Register a receiver with the following intent filters

filter = new IntentFilter();
filter.addAction(Intent.ACTION_TIME_TICK);
filter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
filter.addAction(Intent.ACTION_TIME_CHANGED);

and register it in the OnCreate of your activity

public void onCreate() {
        super.onCreate();
        registerReceiver(receiver, filter);     
    }

Create a Broadcast receiver as follows.

 private final BroadcastReceiver receiver = 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();
            }
        }
    };

and unregister it in the onDestroy of your activity:

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

Answer 2

You need to create a BroadcastReceiver for intent action ACTION_TIMEZONE_CHANGED. BroadcastReceiver is described here.