[英]AlarmManager don't run as expectly
正如您建议我使用AlarmManager代替Timer一样,我认为程序将运行。
但不幸的是,事实并非如此。 或者,更好的是,并非总是...
这是我的代码:
long millis = 0;
this.alarmMgr = (AlarmManager)this.main.getSystemService(Context.ALARM_SERVICE);
this.checkPendingIntent = PendingIntent.getBroadcast(this.main, 0,
new Intent(this.main, AlarmReceiver.class), 0);
if(frequency.compareTo("1HOUR") == 0)
millis = 3600 * 1000;
if(frequency.compareTo("12HOUR") == 0)
millis = 12 * 3600 * 1000;
if(frequency.compareTo("1DAY") == 0)
millis = 24 * 3600 * 1000;
if(frequency.compareTo("1WEEK") == 0)
millis = 7 * 24 * 3600 * 1000;
this.alarmMgr.setRepeating(AlarmManager.RTC_WAKEUP,
System.currentTimeMillis(), millis, this.checkPendingIntent);
我期望等待的意图(AlarmReceiver)将每X毫秒被调用一次,但是不会。
我在电话的日志中看到不会调用它,在服务器的日志中(接收者发送HTTP请求),没有收到请求。
非常奇怪的是,它有时会运行,但是我无法重现这种情况。
有人可以说我在做什么错吗?
非常感谢
卢卡·贝通切洛(Luca Bertoncello)
这是如何使用警报的简单示例
Calendar now = Calendar.getInstance();
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, yourHour);
calendar.set(Calendar.MINUTE, yourMin);
calendar.set(Calendar.SECOND, youSec);
if (calendar.before(now)) { //if time passed
calendar.add(Calendar.DATE,1);
}
Intent intent = new Intent(Context.this, DestinationActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity
(Settings.this,123456, intent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager am = (AlarmManager)getSystemService(Activity.ALARM_SERVICE);
am.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
AlarmManager.INTERVAL_DAY,pendingIntent);
如果希望每天重复一次警报,请使用setRepeating。
如果您不想使用setAlarm(..,..,..,..)
看看这个-
Intent intentalarm = new Intent("com.mubble.powercutsensorapp.MYTIMER");
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intentalarm, 0);
AlarmManager manager = (AlarmManager) getSystemService(ALARM_SERVICE);
long now = System.currentTimeMillis();
long interval = 24*60 * 60 * 1000; // 24 hour
manager.setRepeating(AlarmManager.RTC_WAKEUP, now + interval, interval,
pendingIntent);
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