Create reminder in android app
pendingIntent = PendingIntent.getBroadcast(SettingsActivity.this, 1234567, new Intent(SettingsActivity.this, WeeklyReminder.class), 0);
AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);      Calendar calendar = Calendar.getInstance();     calendar.setTimeInMillis(System.currentTimeMillis());
calendar.add(Calendar.SECOND, 30);
long updateFreq = 30*1000;//24*60*60*1000;
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), updateFreq, pendingIntent);

public class WeeklyReminder extends BroadcastReceiver
{

    @Override
    public void onReceive(Context context, Intent intent)
    {
        // TODO Auto-generated method stub
        try
        {
            System.out.println("Alarm Initiated");
            Toast.makeText(context, "Recieved Alarm", Toast.LENGTH_SHORT).show();
        }
        catch (Exception e)
        {
            Toast.makeText(context, "There was an error somewhere, but we still received an alarm", Toast.LENGTH_SHORT).show();
            e.printStackTrace();
        }
    }

}

<receiver  android:name="WeeklyReminder">

<receiver  android:name=".WeeklyReminder">