My foreground sticky service is killed after a few hours without being restarted. I know this has been asked a couple of times, and I have read and verified all the checks on my device. Its important to note that this seems to occur only on Huawei devices.
So allow me to provide the following details.
Periodic Service
public class PeriodicService extends Service {
@Override
public void onCreate() {
super.onCreate();
acquireWakeLock();
foregroundify();
}
private void foregroundify() {
// Omitted for brevity. Yes it does starts a foreground service with a notification
// verified with adb shell dumpsys activity processes > tmp.txt
// entry in tmp.txt => "Proc # 1: prcp T/S/SF trm: 0 14790:my.app.package.indentifier/u0a172 (fg-service)"
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
acquireWakeLock();
if (!isServiceRunningInForeground(this, this.getClass())){
foregroundify();
}
PeriodicAlarmManager alarmManager = PeriodicAlarmManager.get(this);
alarmManager.setAlarm();
return START_STICKY; // after a few hours, service terminates after this returns. verified in my local logs
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onDestroy() {
releaseWakeLock();
stopForeground(true);
super.onDestroy();
}
}
PeriodicAlarmManager
public void setAlarm() {
Intent intent = new Intent(mContext, PeriodicAlarmReceiver.class);
intent.setAction("repeat");
mAlarmIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0);
mAlarmManager.cancel(mAlarmIntent);
long triggerAtMillis = System.currentTimeMillis() + ALARM_INTERVAL_MINUTES;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT) {
mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, triggerAtMillis, mAlarmIntent);
} else {
mAlarmManager.set(AlarmManager.RTC_WAKEUP, triggerAtMillis, mAlarmIntent);
}
ComponentName receiver = new ComponentName(mContext, PeriodicBootReceiver.class);
PackageManager pm = mContext.getPackageManager();
pm.setComponentEnabledSetting(receiver,
PackageManager.COMPONENT_ENABLED_STATE_ENABLED,
PackageManager.DONT_KILL_APP);
}
PeriodicAlarmReceiver
public class PeriodicAlarmReceiver extends WakefulBroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Intent service = new Intent(context, PeriodicService.class);
service.putExtra("source", "PeriodicAlarmReceiver");
intent.getAction()));
startWakefulService(context, service);
}
}
Application
public class MyApp extends Application {
@Override
public void onCreate() {
super.onCreate();
}
@Override
public void onLowMemory(){
super.onLowMemory(); // never gets called
}
@Override
public void onTrimMemory(int level){
super.onTrimMemory(level); // only gets called on app launch
}
@Override
public void onTerminate() {
super.onTerminate();
}
}
adb shell dumpsys activity processes > tmp.txt
Entry in tmp.txt => "Proc # 1: prcp T/S/SF trm: 0 14790:my.app.package.indentifier/u0a172 (fg-service)"
Above Entry is based on accepted answer here: Foreground service being killed by Android
Added MyApp to protected app list in Settings-> Advanced Settings -> Battery Manager -> Protected Apps (Allow app to keep running after screen is turned off)
Used Performance (lowest setting) in Settings-> Advanced Settings -> Power Plan (Performance)
Device Information
Model Number: HUAWEI GRA-UL00
EMUI Version: EMUI 4.0.1
Android Version: 6.0
Other Notes:
Low Memory, onTrimMemory is not called prior to termination. In any case, I stripped the app to its bare minimum just to keep the app alive in the background, so memory should not be an issue here.
Sticky Service is never restarted unless user explicitly re-launches the app.
Alarm Manager is not called to restart/recreate service. setExactAndAllowWhileIdle() does not work either, and should be irrelevant since the service is a foreground priority service, and hence should not be affected by doze mode.
Service can only run at the maximum of 12 hours before being terminated. Battery was above 65% when this happened.
It is a requirement to keep the service running indefinitely as this app is for a research project.
Is there anything else I can do or is this a specific Huawei Android modification that the developer can do nothing about. To reiterate, this issue only happens on Huawei devices.
Appreciate any additional insight on this!
