Simple AlarmManager example for firing an activity in 10 minutes

Question

I\'ve found many similar questions to this, but they\'re too complicated (too much code), at least I think.

Can this thing be done in a few code of lines? I want to

Answer 1

This function I use sets or cancels an alarm depending on the "Set" parameter

public static void SetAlarm(Context c, long AlarmTime, int ItemID, String Message, Boolean Set) {
    Intent intent = new Intent(c, AlarmReceiver.class);
    intent.putExtra("Message", Message);
    intent.putExtra("ItemID", ItemID);

    PendingIntent sender = PendingIntent.getBroadcast(c, 8192 + ItemID, intent, PendingIntent.FLAG_UPDATE_CURRENT);

            // Clear the seconds to 0 for neatness
    Calendar ca = Calendar.getInstance();
    ca.setTimeInMillis(AlarmTime);
    ca.set(Calendar.SECOND, 0);
    AlarmTime = ca.getTimeInMillis();

    // Get the AlarmManager service
    AlarmManager am = (AlarmManager) c.getSystemService(Context.ALARM_SERVICE);
    if (Set) {
        am.set(AlarmManager.RTC_WAKEUP, AlarmTime, sender);
    } else {
        am.cancel(sender);
    }
}

You would then need a Broadcast Receiver to handle the alarm and do whatever it is you want to do.

public class AlarmReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
    try {
        Bundle bundle = intent.getExtras();
        String Message = bundle.getString("Message");
        int ItemID = bundle.getInt("ItemID");

        // Do what you want to do, start an activity etc

    } catch (Exception e) {
        e.printStackTrace();
    }
}

}