如何在android中使用报警管理器设置多个报警

5 回答

• 6

  您需要使用 different Broadcast id's 作为 pending intents . 像这样的东西：

  Intent intent = new Intent(load.this, AlarmReceiver.class);
      final int _id = (int) System.currentTimeMillis();
      PendingIntent appIntent = PendingIntent.getBroadcast(this, _id, intent,PendingIntent.FLAG_ONE_SHOT);
  

  使用系统时间应该是您触发的每个待处理目标的唯一标识符 .

  回复于 2024-05-03T05:49:57+08:00
• 2

  来自the docs：

  如果已经安排了此Intent的警报（两个意图的相等性由filterEquals（Intent）定义），那么它将被删除并替换为此

  多个 AlarmManagers 无法解决您的问题 . 如果它们有多个不同的警报（不同的时间和不同的天数），则每次启动上一个警报时都需要在 BroadcastReceiver 内设置警报 .

  您还需要按住RECEIVE_BOOT_COMPLETED并使用 BroadcastReceiver 来接收启动，这样如果手机重新启动，您可以重新安排警报 .

  回复于 2024-05-03T05:49:57+08:00
• 141

  要设置多个警报，您需要每次定义 Intent ，以便与其他警报区分开来 . 我发现这样做最简单的方法是设置 Intent 的 data 字段，如下所示：

  // give your alarm an id and save it somewhere
  // in case you want to cancel it in future
  String myAlarmId = ...;
  
  // create your Intent
  Intent intent = new Intent(AlarmList.this, AlarmReceiver.class);
  intent.setData(Uri.parse("myalarms://" + myAlarmId));
  ...
  

  你的其余代码@ Hassy31原样很好并保持不变 .

  请注意，根据文档， PendingIntent.getBroadcast() 方法中的 requestCode 参数（由@parag建议）未使用，因此这不是正确的方法 .

  回复于 2024-05-03T05:49:57+08:00
• 0

  为pendingIntent设置Broadcast id

  for (int id = 0; id < 3; id++) {
          // Define pendingintent
          PendingIntent pendingIntent = PendingIntent.getBroadcast(this, id,ntent, 0); 
          // set() schedules an alarm 
          alarmManager.set(AlarmManager.RTC_WAKEUP, alertTime, pendingIntent);
  }
  

  回复于 2024-05-03T05:49:57+08:00
• 10

  Set multiple alarms using android alarm manager

  //RC_ARRAY is store all the code that generate when alarm is set 
  private lateinit var RC_ARRAY:ArrayList<Int>
  //tick is just hold the request when new alarm set
  private var tick :Int=0
  
  //setAlarm method set alarm
  fun setAlarm(c: Calendar, context: Context) {
      val manager = context.getSystemService(Context.ALARM_SERVICE) as AlarmManager
  
  //when alarm store set the request assign to tick variable
      tick = System.currentTimeMillis().toInt()
  //Add all the alarm Request into RC_ARRAY for just cancel the alarm
      RC_ARRAY.add(tick)
  
  //Notification Broadcast intent
      val intentAlarm = Intent(context, AlaramFireReceiver::class.java).let {
          PendingIntent.getBroadcast(context, tick, it, PendingIntent.FLAG_ONE_SHOT)
      }
  
  
  //alarm fire next day if this condition is not statisfied 
      if (c.before(Calendar.getInstance())) {
          c.add(Calendar.DATE, 1)
      }
  //set alarm
      manager.setExact(AlarmManager.RTC_WAKEUP, c.timeInMillis, intentAlarm)
  
  
  }
  //remove specific alarm
  private fun removeAlarm(context: Context) {
      val manager = context.getSystemService(Context.ALARM_SERVICE) as AlarmManager
      //remove specific alarm according to alarm request code
      for (i in RC_ARRAY){
          val intentAlarm = Intent(context, AlaramFireReceiver::class.java).let {
              PendingIntent.getBroadcast(context, i, it, 0)
          }
  //cancel alarm
          manager.cancel(intentAlarm)
      }
  }
  
  
  
  //delivers notification for alarm
  class AlaramFireReceiver : BroadcastReceiver() {
  
      override fun onReceive(context: Context, intent: Intent) {
  //Notification ID
         val channelid="channelId"
          val manger=context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
  //check for device only available for Oreo and above  
          if (Build.VERSION.SDK_INT >=Build.VERSION_CODES.O){
              val channel= NotificationChannel(channelid,"alarm notification",NotificationManager.IMPORTANCE_HIGH)
              channel.enableLights(true)
              manger.createNotificationChannel(channel)
          }
  //build notification
          val build=NotificationCompat.Builder(context,channelid)
              .setSmallIcon(R.drawable.ic_access_time_black_24dp)
              .setContentTitle("alarm")
              .setContentTitle("time done")
              .setPriority(NotificationCompat.PRIORITY_HIGH)
              .setColor(Color.RED)
  //Deliver notification 
          manger.notify(0,build.build())
      }
  }
  

  回复于 2024-05-03T05:49:57+08:00