Android的重复报警器不能正确重复 [英] Android repeating alarm not repeating correctly
问题描述
我有，我想重复各地每5分钟发出警报。出于测试目的，我把它设置为重复连用5 秒代替，因为这样的：
AlarmManager alarmManager =（AlarmManager）getActivity（）getSystemService（getActivity（）ALARM_SERVICE）。
意向意图=新意图（getActivity（），CoordinateAlarmReceiver.class）;
的PendingIntent的PendingIntent = PendingIntent.getService（getActivity（），1，意向，0）;
INT repeatSeconds = 5;
alarmManager.setInexactRepeating（AlarmManager.RTC_WAKEUP，System.currentTimeMillis的（）
repeatSeconds * 1000，的PendingIntent）;
和接收IntentService打印日志语句当它接收到报警。然而，围绕触发一次分半钟，而不是每5秒一次，它是设置不正确在哪里？我一直在使用setRepeating（）而不是setInexactRepeating（也试过），但我得到相同的结果。
下面是我的警报接收器：
公共类CoordinateAlarmReceiver扩展IntentService { 公共CoordinateAlarmReceiver（）{
超级（CoordinateAlarmReceiver）;
} / *
接到报警，得到新的联系人，然后显示通知
* /
@覆盖
保护无效onHandleIntent（意向意图）{
MyLog.i（坐标接到报警）; //新GetNewContactsTask（本）.execute（）;
}
}
我在哪，我需要一个服务触发每15秒一个类似的问题......我做了以下。
-
我有一个扩展应用程序调用的所有MyApplication的类。此类包含报警管理器的实例。
公共类MyApplication的扩展应用{
私人MyAlarmManager alarmMgr; @覆盖
公共无效的onCreate（）{
Log.d（TAG，所有MyApplication的onCreate）;
super.onCreate（）;
Log.d（TAG，INITING alarmMgr ......）;
alarmMgr =新MyAlarmManager（本）;
} 公共MyAlarmManager getAlarmManager（）{
返回alarmMgr;
}
}<醇开始=2>
-
这是AlarmManager称为MyAlarmManager创建，启动和放大器;停止报警现在设置此一个服务的下一个报警。
公共类MyAlarmManager {
私人所有MyApplication MAPP;
私人意图意图;
私人的PendingIntent的PendingIntent;
私人AlarmManager alarmMgr;
私有静态最后长的频率= 15000; 公共MyAlarmManager（上下文的背景下）{
MAPP =（所有MyApplication）范围内;
// Android的报警服务
alarmMgr =（AlarmManager）context.getSystemService（Context.ALARM_SERVICE）; //服务将每15秒发射
意图=新意图（背景下，MyService.class）;
的PendingIntent = PendingIntent.getService（背景下，1，意向，PendingIntent.FLAG_UPDATE_CURRENT）;
setNextAlarm（）;
} 公共无效setNextAlarm（）{
Log.d（TAG，设置一个报警......）;
alarmMgr.set（AlarmManager.RTC_WAKEUP，（System.currentTimeMillis的（）+频率）的PendingIntent）;
} 私人无效stopAlarms（）{
Log.d（TAG，停止报警）;
alarmMgr.cancel（的PendingIntent）;
}} -
当服务被激发我得到MyApplication的实例，让AlarmManager和安排下一次警钟。
公共类的MyService扩展服务{
所有MyApplication MAPP; @覆盖
公众诠释onStartCommand（意向意图，诠释标志诠释startId）{
Log.d（TAG，在onStartCommand）;
//如果需要初始化应用参考
如果（MAPP == NULL）{
Log.d（TAG，应用为null现在创建......）;
MAPP =（所有MyApplication）getApplicationContext（）;
} //安排下一个区检查
mApp.getAlarmMgr（）setNextAlarm（）。 //自定义功能...
}
I have an alarm that I am wanting to repeat around every 5 minutes. For testing purposes, I have it set to repeat once every 5 seconds instead, as such:
AlarmManager alarmManager = (AlarmManager)getActivity().getSystemService(getActivity().ALARM_SERVICE);
Intent intent = new Intent(getActivity(), CoordinateAlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent.getService(getActivity(), 1, intent, 0);
int repeatSeconds = 5;
alarmManager.setInexactRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(),
repeatSeconds * 1000, pendingIntent);
And the receiving IntentService prints a log statement when it receives the alarm. However, it fires around once every minute and a half instead of once every 5 seconds, where is it set incorrectly? I have also tried using setRepeating() instead of setInexactRepeating() but I get the same results.
Here is my alarm receiver:
public class CoordinateAlarmReceiver extends IntentService {
public CoordinateAlarmReceiver(){
super("CoordinateAlarmReceiver");
}
/*
Alarm received, get new contacts which then shows notification
*/
@Override
protected void onHandleIntent(Intent intent) {
MyLog.i("coordinate alarm received");
//new GetNewContactsTask(this).execute();
}
}
I had a similar problem in which I needed a Service fired every 15 seconds... I did the following.
I have a class that extends Application called MyApplication. This class holds an instance of an alarm manager.
public class MyApplication extends Application { private MyAlarmManager alarmMgr; @Override public void onCreate() { Log.d(TAG, "MyApplication onCreate"); super.onCreate(); Log.d(TAG, "initing alarmMgr ..."); alarmMgr = new MyAlarmManager(this); } public MyAlarmManager getAlarmManager(){ return alarmMgr; } }An AlarmManager called MyAlarmManager creates, starts & stops the alarms AND NOW sets the next alarm for this one service.
public class MyAlarmManager { private MyApplication mApp; private Intent intent; private PendingIntent pendingIntent; private AlarmManager alarmMgr; private static final long FREQUENCY = 15000; public MyAlarmManager(Context context) { mApp = (MyApplication) context; // Android alarm service alarmMgr = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE); // service to be fired every 15 seconds intent = new Intent(context, MyService.class); pendingIntent = PendingIntent.getService(context, 1, intent, PendingIntent.FLAG_UPDATE_CURRENT); setNextAlarm(); } public void setNextAlarm(){ Log.d(TAG, "setting next alarm..."); alarmMgr.set(AlarmManager.RTC_WAKEUP, (System.currentTimeMillis() + FREQUENCY), pendingIntent); } private void stopAlarms(){ Log.d(TAG, "stopping Alarms"); alarmMgr.cancel(pendingIntent); } }When the Service is fired I get an instance of MyApplication, get the AlarmManager and schedule the next alarm.
public class MyService extends Service { MyApplication mApp; @Override public int onStartCommand(Intent intent, int flags, int startId) { Log.d(TAG, "in onStartCommand"); // init the app reference if needed if (mApp == null) { Log.d(TAG, "app was null. Creating now..."); mApp = (MyApplication) getApplicationContext(); } // schedule the next zone check mApp.getAlarmMgr().setNextAlarm(); // custom functionality ... }
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