在Android（C＃）中启动AlarmManager

本文介绍了在Android（C＃）中启动AlarmManager的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 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 !!!"