警报管理器仅触发一次，而不是每 5 分钟触发一次

Question

我有一个场景，我每 5 分钟获取一次 GPS 坐标。为此，我使用警报管理器。但从昨天开始我就很困惑，因为警报管理器只触发了一次，之后就不再重复了。

下面是代码

MainActivity.Class

enter code here

私有无效setAlarm（）{

    AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
    Intent intent = new Intent(this, LocationAlarmReceiver.class);
    intent.setAction("com.mhz.evs.ACTION_FETCH_LOCATION"+System.currentTimeMillis());
    PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_IMMUTABLE|FLAG_UPDATE_CURRENT );

    long interval = AlarmManager.INTERVAL_FIFTEEN_MINUTES / 3; // 5 minutes in milliseconds

    long triggerAtMillis = System.currentTimeMillis() + interval;
    if (alarmManager != null) {
            alarmManager.setExactAndAllowWhileIdle ( AlarmManager.RTC_WAKEUP, triggerAtMillis, pendingIntent);
                }
}

LocationReceiver.Class

公共类 LocationAlarmReceiver 扩展了 BroadcastReceiver { 上下文上下文；

@Override
public void onReceive(Context context, Intent intent) {
    this.context=context;
    if (intent.getAction().equals("android.intent.action.BOOT_COMPLETED")) {
        Intent alarmIntent = new Intent(context, LocationAlarmReceiver.class);
        PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, alarmIntent, PendingIntent.FLAG_IMMUTABLE);

        AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
        Calendar calendar = Calendar.getInstance();
        calendar.setTimeInMillis(System.currentTimeMillis());
        calendar.add(Calendar.MINUTE, 1);

        if (alarmManager != null) {
            alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), 5 * 60 * 1000, pendingIntent);
        }
    } else {
        Toast.makeText(context,"Triggered",Toast.LENGTH_SHORT).show();
        Intent serviceIntent = new Intent(context, LocationService.class);
        context.startService(serviceIntent);}
}

清单.类

<uses-permission android:name="android.permission.WAKE_LOCK"/>

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>

<uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM"/>

<uses-permission android:name="android.permission.USE_EXACT_ALARM"/>

<receiver 

android:name=".Receivers.LocationAlarmReceiver" android:exported="true" 
android:enabled="true">
      <intent-filter>

          <action android:name="com.mhz.evs.ACTION_FETCH_LOCATION"/>

      </intent-filter>

  </receiver>

  <service android:name=".Services.LocationService" android:exported="true" android:enabled="true"/>

代码仅运行一次，但不会每 5 分钟再次重复一次。如果有人遇到了确切的问题并解决了它可以指导我，这将是一个很大的帮助。

Answer 1

我通过利用其他技术找到了解决方案，因为重复功能

alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,triggerAtMillis,pendingIntent)

仍然没有在我身边奔跑。我使用了 Alarm Manager 的一项功能，该功能仅在 MainActivity.class 中触发一次

am.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + (1000 * 2), pi);

这样警报管理器将被调用一次，并按照给定的时间间隔启动服务。一旦服务启动，它将再次调用该函数，并且警报将设置为在下一个时间间隔调用。

它将通过广播接收器启动服务，并且在服务类中我再次调用了警报管理器的功能。

MainActivity.Class

private void setAlarmOneTime() 

{

AlarmManager alarmManager = (AlarmManager) 
getSystemService(Context.ALARM_SERVICE);

Intent intent = new Intent(this, LocationAlarmReceiver.class);    
intent.setAction("com.mhz.evs.ACTION_FETCH_LOCATION"
+System.currentTimeMillis());

PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_IMMUTABLE|FLAG_UPDATE_CURRENT );

long interval = AlarmManager.INTERVAL_FIFTEEN_MINUTES / 3; // 5 minutes in milliseconds

long triggerAtMillis = System.currentTimeMillis() + interval;
if (alarmManager != null) {
        alarmManager.setExactAndAllowWhileIdle ( AlarmManager.RTC_WAKEUP, triggerAtMillis, pendingIntent);
            }}

LocationReceiver.Class

public class LocationAlarmReceiver extends BroadcastReceiver {
Context context;
@Override
public void onReceive(Context context, Intent intent) {

this.context=context;

if (intent.getAction().equals("AlarmFire")) 
{

Toast.makeText(context,"Triggered",Toast.LENGTH_SHORT).show();
        
Intent serviceIntent = new Intent(context, LocationService.class);
        context.startForegroundService(serviceIntent);
}
        }
    } 

在服务类中再次触发警报管理器

服务。班级

public void setAgainOnetimeTimer(Context context) {

AlarmManager am 
(AlarmManager)context.getSystemService(Context.ALARM_SERVICE);

Intent intent = new Intent(context, LocationAlarmReceiver.class);

intent.setAction("AlarmFire");

PendingIntent pi = PendingIntent.getBroadcast(context, 0, intent, 
PendingIntent.FLAG_IMMUTABLE);

am.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + (1000 * 60 
*10), pi);

}