java - Android AlarmManager 与 SQL

Question

我有一个项目，它使用 SQLite 数据库在数据库的特定时间触发警报，我在项目中使用 android 警报管理器，并使用广播接收器在启动时管理警报，这里是 AlarmCode 的示例:

alarmIntent = PendingIntent.getBroadcast(context, ALARM_ID, intent, 
PendingIntent.FLAG_CANCEL_CURRENT);

  if (Build.VERSION.SDK_INT > Build.VERSION_CODES.LOLLIPOP_MR1) {
    //lollipop_mr1 is 22, this is only 23 and above
    // alarmMgr.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, then.getMillis()-G.AzanDelayTime, alarmIntent);
    alarmMgr.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, then.getMillis(), alarmIntent);


  } else if (Build.VERSION.SDK_INT > Build.VERSION_CODES.JELLY_BEAN_MR2) {
    //JB_MR2 is 18, this is only 19 and above.
    //alarmMgr.setExact(AlarmManager.RTC_WAKEUP, then.getMillis()-G.AzanDelayTime, alarmIntent);
    alarmMgr.setExact(AlarmManager.RTC_WAKEUP, then.getMillis(), alarmIntent);
  }
  else if (Build.VERSION.SDK_INT >= 21) {

    alarmMgr.setAlarmClock(new AlarmManager.AlarmClockInfo(then.getMillis(), alarmIntent), alarmIntent);
    Toast.makeText(G.context,"This is sdk>21",Toast.LENGTH_LONG).show();

  }
  else {
    //available since api1
    //alarmMgr.set(AlarmManager.RTC_WAKEUP, then.getMillis()-G.AzanDelayTime, alarmIntent);
    alarmMgr.set(AlarmManager.RTC_WAKEUP, then.getMillis(), alarmIntent);

但我希望每个设备上的闹钟都能在准确的时间触发，在某些情况下，闹钟会在 15 分钟或更短的时间内触发，此问题的最佳解决方案是什么？

Answer 1

您可以使用AlarmManagerCompat :

AlarmManagerCompat.setExactAndAllowWhileIdle(...)

或

AlarmManagerCompat.setAlarmClock(...)