在Android（C＃）中启动AlarmManager [英] Starting AlarmManager in Android (C#)

问题描述

我看到并使用了以下链接：创建并在Android中使用AlarmManager调度警报

现在我有了以下代码：

 名称空间AlarmManage 
 {
公共类MyBroadcastReceiver：BroadcastReceiver 
 {
公共重写void OnReceive（上下文上下文，意图）
 {
 Toast.MakeText（上下文，时间到了……现在振动了！，
 ToastLength.Long）.Show（）; 
 Vibrator振动器=（Vibrator）上下文
 .GetSystemService（Context.VibratorService）; 
振动器。Vibrate（2000）; 
} 
} 
} 
 
 public void startAlertAtParticularTime（）
 {
 //警报首先在14小时40分钟振动并重复本身以ONE_HOUR间隔
 intent = new Intent（this，typeof（MyBroadcastReceiver））; 
endingIntent = PendingIntent.GetBroadcast（
 this，280192，intent，PendingIntentFlags.CancelCurrent）; 
 Java.Util.Calendar日历= Java.Util.Calendar.Instance; 
 calendar.TimeInMillis = Java.Lang.JavaSystem.CurrentTimeMillis（）; 
 calendar.Set（Java.Util.CalendarField.HourOfDay，14）; 
 calendar.Set（Java.Util.CalendarField.Minute，49）; 
 alarmManager =（AlarmManager）GetSystemService（AlarmService）; 
 alarmManager.SetRepeating（AlarmType.RtcWakeup，calendar.TimeInMillis，
 AlarmManager.IntervalHour，endingIntent）; 
 Toast.MakeText（this，警报将在指定的时间振动，ToastLength.Long）.Show（）; 
} 
  

我还在清单中设置了 SET-ALARM和 VIBRATE。 / p>

我的问题：我看不到输出 Time Up ... Now Vibrating！

解决方案

我认为问题在于您没有成功声明您的 MyBroadcastReceiver ，在xamarin中，我们可以使用：

  [BroadcastReceiver（Enabled = true）] 
  

声明此广播，就像在传统android清单中这样声明：

 < receiver android： name = MyBroadcastReceiver /> 
  

因此， MyBroadcastReceiver 应如下所示：

  [BroadcastReceiver（Enabled = true）] 
公共类MyBroadcastReceiver：BroadcastReceiver 
 {
公共替代无效OnReceive（上下文上下文，意图）
 {
 Toast.MakeText（上下文，时间到了……现在振动了！，
 ToastLength.Long）.Show（）; 
 Vibrator振动器=（Vibrator）上下文
 .GetSystemService（Context.VibratorService）; 
振动器。Vibrate（2000）; 
} 
} 
  

现在您可以敬酒：时间到了。 ..现在振动了！！！

I saw and used this link: Creating And Scheduling Alarms Using AlarmManager In Android

Now I have this code:

namespace AlarmManage
{
    public class MyBroadcastReceiver : BroadcastReceiver 
    {
        public override void OnReceive(Context context, Intent intent)
        {
            Toast.MakeText(context, "Time Up... Now Vibrating !!!",
                    ToastLength.Long).Show();
            Vibrator vibrator = (Vibrator)context
                    .GetSystemService(Context.VibratorService);
            vibrator.Vibrate(2000);
        }  
    }
}

public void startAlertAtParticularTime()
{
    // alarm first vibrate at 14 hrs and 40 min and repeat itself at ONE_HOUR interval  
    intent = new Intent(this, typeof(MyBroadcastReceiver));
    pendingIntent = PendingIntent.GetBroadcast(
            this, 280192, intent, PendingIntentFlags.CancelCurrent);
    Java.Util.Calendar calendar = Java.Util.Calendar.Instance;
    calendar.TimeInMillis = Java.Lang.JavaSystem.CurrentTimeMillis();
    calendar.Set(Java.Util.CalendarField.HourOfDay, 14);
    calendar.Set(Java.Util.CalendarField.Minute, 49);
    alarmManager = (AlarmManager)GetSystemService(AlarmService);
    alarmManager.SetRepeating(AlarmType.RtcWakeup, calendar.TimeInMillis,
            AlarmManager.IntervalHour, pendingIntent);
    Toast.MakeText(this, "Alarm will vibrate at time specified", ToastLength.Long).Show();
}

I also set "SET-ALARM" and "VIBRATE" in Manifest.

My problem: I do not see the output "Time Up... Now Vibrating !!!

解决方案

I think the problem is that you didn't successfully declare your MyBroadcastReceiver, in xamarin, we can use:

[BroadcastReceiver(Enabled = true)] 

to declare this broadcast. It's like declare it in traditional android manifest like this:

<receiver android:name="MyBroadcastReceiver" /> 

So, MyBroadcastReceiver should be like this:

[BroadcastReceiver(Enabled = true)]
public class MyBroadcastReceiver : BroadcastReceiver
{
    public override void OnReceive(Context context, Intent intent)
    {
        Toast.MakeText(context, "Time Up... Now Vibrating !!!",
                ToastLength.Long).Show();
        Vibrator vibrator = (Vibrator)context
                .GetSystemService(Context.VibratorService);
        vibrator.Vibrate(2000);
    }
}

Now you can get the toast: "Time Up... Now Vibrating !!!"

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