无法在 Xamarin Android C# 中创建警报

Cant create an alarm in Xamerin Android C#

复制了我老师的简化代码,以查看我编写的代码是否有误或其他问题,但即使是她的代码也无法正常工作。在这里:

private void BtnAlarm_Click(object sender, EventArgs e)
 {
            Intent intentAlarm = new Intent(this, typeof(AlarmReceiver));
            // #2 - Pending intent - > Broadcast
            PendingIntent pendingIntent = PendingIntent.GetBroadcast(Application.Context, 1, intentAlarm, 0);
            // #3 - Set Alarm Manager
            AlarmManager alarmManager = (AlarmManager)GetSystemService(AlarmService);
            //30s
            alarmManager.SetExactAndAllowWhileIdle(AlarmType.ElapsedRealtimeWakeup, 
            SystemClock.ElapsedRealtime() + 30 * 1000, pendingIntent);
        }

调试器不会 运行 到此 activity:

public class AlarmReceiver : BroadcastReceiver
    {
        public override void OnReceive(Context context, Intent intent)
        {
            Toast.MakeText(context, "Received intent!", ToastLength.Short).Show();
        }
    }

需要说明的是,运行在她的应用程序中,闹钟正在工作。

您可以将下面的代码与您的 AlarmReceiver:

 [BroadcastReceiver(Enabled = true, Exported = false)]
public class AlarmReceiver : BroadcastReceiver
{
    public override void OnReceive(Context context, Intent intent)
    {
        Toast.MakeText(context, "Received intent!", ToastLength.Short).Show();
    }

}