Intent alarmIntent = new Intent(currentActivity.getApplicationContext(), AlarmReceiver.class);
PendingIntent pendingAlarmIntent = PendingIntent.getBroadcast(currentActivity.getApplicationContext(),
            AppManager.ALARM_PENDING_INTENT_REQUEST_CODE,
            alarmIntent,
            PendingIntent.FLAG_CANCEL_CURRENT);

AlarmManager alarmManager = (AlarmManager)currentActivity.getApplicationContext().getSystemService(Context.ALARM_SERVICE);
alarmManager.setInexactRepeating(AlarmManager.RTC_WAKEUP,
            System.currentTimeMillis(),
            interval,
            pendingAlarmIntent);

public class AlarmReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context _context, Intent _intent){
    I    ntent serviceIntent = new Intent(_context.getApplicationContext(), PostLocationService.class);
        _context.getApplicationContext().startService(serviceIntent);
    }
}

Intent alarmIntent = new Intent(currentActivity.getApplicationContext(),     AlarmReceiver.class);
PendingIntent pendingAlarmIntent = PendingIntent.getBroadcast(currentActivity.getApplicationContext(),
            AppManager.ALARM_PENDING_INTENT_REQUEST_CODE,
            alarmIntent,
            PendingIntent.FLAG_CANCEL_CURRENT);

AlarmManager alarmManager = (AlarmManager)currentActivity.getApplicationContext().getSystemService(Context.ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP,
            interval,
            pendingAlarmIntent);