一段时间后，前台服务正被安卓系统扼杀

Question

对于更新的位置，我使用了Fused location API，但似乎有些Android手机在一段时间后正在扼杀前台服务。如何运行前台服务并确保它们不会被Android终止？

public class LocationUpdatesService extends Service {
public class LocalBinder extends Binder {
public LocationUpdatesService getService() {
return LocationUpdatesService.this;
}
}
private final IBinder mBinder = new LocalBinder();
@Override
public void onCreate() {
createFusedLocationClient();
createFusedLocationRequest();
createLocationCallback();
startForeground(NOTIFICATION_ID, createNotification());
}
private void createFusedLocationClient() {
locationClient = LocationServices.getFusedLocationProviderClient(getApplicationContext());
}
private void createFusedLocationRequest() {
locationRequest = new LocationRequest();
locationRequest.setMaxWaitTime(MAXIMUM_WAIT_TIME);
locationRequest.setSmallestDisplacement(MAXIMUM_DISPLACEMENT);
locationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
String action = intent.getAction();
if (action != null && action.equalsIgnoreCase(Constants.REQUEST_LOCATION_UPDATES)) {
requestLocationUpdates();
}
if (action != null && action.equalsIgnoreCase(Constants.REMOVE_LOCATION_UPDATES)) {
removeLocationUpdates();
stopSelf();
}

return START_REDELIVER_INTENT;
}
@Override
public IBinder onBind(Intent intent) {
ContextCompat.startForegroundService(getApplicationContext(), new Intent(getApplicationContext(),
LocationUpdatesService.class));
return mBinder;
}
}

Answer 1

您可以在onTaskRemoved 函数中重新启动服务

override fun onTaskRemoved(rootIntent: Intent) {
val restartServiceIntent = Intent(applicationContext, LocationUpdatesService::class.java).also {
it.setPackage(packageName)
};
val restartServicePendingIntent: PendingIntent = PendingIntent.getService(this, 1, restartServiceIntent, PendingIntent.FLAG_ONE_SHOT);
applicationContext.getSystemService(Context.ALARM_SERVICE);
val alarmService: AlarmManager = applicationContext.getSystemService(Context.ALARM_SERVICE) as AlarmManager;
alarmService.set(AlarmManager.ELAPSED_REALTIME, SystemClock.elapsedRealtime() + 1000, restartServicePendingIntent);
}

如果有人有同样的问题，这篇文章对我帮助很大，它描述了如何创建前台服务

https://robertohuertas.com/2019/06/29/android_foreground_services/