Android AlarmManager.setExactAndAllowWhileIdle() a

Question

I think this question is asked many time in stackoverflow but still so many people struggling to resolved it.

In my android app I have to wake up device for every half hour to getting current location and send it to server. For this I have used AlarmManager with setExactAndAllowWhileIdle() method and WakefulBroadcastReceiver. Its working fine in almost all standard/popular devices like samsung, LG(Nexus), Sony, Panasonic, lenovo, Motorola, Micro max and so on....But some other devices mostly china devices not supporting or cannot allow device wake up from doze mode with setExactAndAllowWhileIdle(). I have tested it in leeco letV (Android OS 6.1) device which not allow alarm manager to wake up in specific interval.

My code portion I have mentioned below :

UserTrackingReceiverIntentService.java

public class UserTrackingReceiverIntentService extends IntentService {

    public static final String TAG = "UserTrackingReceiverIntentService";
    Context context;
    public UserTrackingReceiverIntentService() {
        super("UserTrackingReceiverIntentService");
    }

    @TargetApi(Build.VERSION_CODES.M)
    @Override
    protected void onHandleIntent(Intent intent) {
        this.context = this;

        if (!Util.isMyServiceRunning(LocationService.class, context)) {
            context.startService(new Intent(context, LocationService.class));
        }

        Calendar calendar = Calendar.getInstance();
        //********************************** SETTING NEXT ALARM *********************************************
            Intent intentWakeFullBroacastReceiver = new Intent(context, SimpleWakefulReceiver.class);
            PendingIntent sender = PendingIntent.getBroadcast(context, 1001, intentWakeFullBroacastReceiver, 0);
            AlarmManager alarmManager = (AlarmManager) context.getSystemService(context.ALARM_SERVICE);

        if (calendar.get(Calendar.MINUTE) >= 0 && calendar.get(Calendar.MINUTE) < 30) {
            calendar.set(Calendar.HOUR_OF_DAY, calendar.get(Calendar.HOUR_OF_DAY));
            calendar.set(Calendar.MINUTE, 30);
            calendar.set(Calendar.SECOND, 0);
        } else if (calendar.get(Calendar.MINUTE) >= 30) {
            if (calendar.get(Calendar.HOUR_OF_DAY) == 23) {
                calendar.set(Calendar.HOUR_OF_DAY, 0);
                calendar.add(Calendar.DAY_OF_MONTH, 1);
            } else {
                calendar.set(Calendar.HOUR_OF_DAY, calendar.get(Calendar.HOUR_OF_DAY) + 1);
            }
            calendar.set(Calendar.MINUTE, 0);
            calendar.set(Calendar.SECOND, 0);
        } else {
            calendar.set(Calendar.HOUR_OF_DAY, calendar.get(Calendar.HOUR_OF_DAY));
            calendar.set(Calendar.MINUTE, 0);
            calendar.set(Calendar.SECOND, 0);
        }

        //MARSHMALLOW OR ABOVE
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP,
                    calendar.getTimeInMillis(), sender);
        }
        //LOLLIPOP 21 OR ABOVE
        else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            AlarmManager.AlarmClockInfo alarmClockInfo = new AlarmManager.AlarmClockInfo(calendar.getTimeInMillis(), sender);
            alarmManager.setAlarmClock(alarmClockInfo, sender);
        }
        //KITKAT 19 OR ABOVE
        else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            alarmManager.setExact(AlarmManager.RTC_WAKEUP,
                    calendar.getTimeInMillis(), sender);
        }
        //FOR BELOW KITKAT ALL DEVICES
        else {
            alarmManager.set(AlarmManager.RTC_WAKEUP,
                    calendar.getTimeInMillis(), sender);
        }


        Util.registerHeartbeatReceiver(context);
        SimpleWakefulReceiver.completeWakefulIntent(intent);
    }
}

Every time above service set next alarm after 30 min once it called.

public class SimpleWakefulReceiver extends WakefulBroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        // This is the Intent to deliver to our service.
        Calendar calendar = Calendar.getInstance();
        Intent service = new Intent(context, UserTrackingReceiverIntentService.class);
        Date date = new Date();

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
        String DateTime = sdf.format(date);
        DateTime = Util.locatToUTC(DateTime);
        service.putExtra("date", String.valueOf(DateTime));

        String latitude = Util.ReadSharePrefrence(context, "track_lat");
        String longitude = Util.ReadSharePrefrence(context, "track_lng");

        service.putExtra("lat", latitude);
        service.putExtra("lon", longitude);

        Log.i("SimpleWakefulReceiver", "Starting service @ " + calendar.get(Calendar.HOUR_OF_DAY) + " : " + calendar.get(Calendar.MINUTE) + " : " + calendar.get(Calendar.SECOND));

        // Start the service, keeping the device awake while it is launching.
        startWakefulService(context, service);
    }
}

As I have changed some setting manually from leeco letV device like Settings > Battery > Align Wakeup > Disabled both the options. If it enabled battery can ignore force wake ups from apps.

My Questions:

1. What happened in such kind of devices? Why they not allow alarm to fire in specific time interval?

2. In some devices like Gionee s plus alarm firing 2-3 minutes late... why?

3. android.net.conn.CONNECTIVITY_CHANGE broad cast receiver to listen when network connectivity change .....What to do when it is not working in some devices like Gionee s plus?

4. There are many variation for battery optimization setting for various manufacturer....Is it can harm to our app's background services if is then what the solution for this.

Answer 1

Hi I have got same issue while testing in Xiomi phone.leeco I haven't much idea. Xiomi phone have their own OS that is MIUI.When we cleared RAM it clear all the apps execpt some of apps register in OS. Like Whatsapp and facebook some other famous apps.

I have tried Service, Alarm Manager and Scheduler but not get any success.

They provide some manually specfic way to run services.I have checked Leeco it used Android OS.

Solution for MIUI 7.0 => Security => Autostart => select Apps that you want to run in background => Reboot After reboot your device should able to run your application services in background like other android devices do.

MIUI 4.0 settings

MIUI AutoStart Detailed Description

According to me you can try with Services then check if it work or not.

Thanks hopefully you'll get bit help from this.

Answer 2

In my android app I have to wake up device for every 15 min to getting current location and send it to server. I have tested it on Xiaomi Mi 5s (Android 6.0.1). When I close the application, the application goes to sleep :( AlarmManager with setExactAndAllowWhileIdle() not working ¯\_(ツ)_/¯

Yes, it's working fine in almost all standard/popular devices like Samsung, LG (Nexus 5X), Sony, Motorola, Pixel...

MY SOLUTION:

The manifest entry for each type of component element — <activity>, <service>, <receiver>, and <provider> — supports an android:process attribute that can specify a process in which that component should run.

You need add this string android:process=":service" in your AndroidManifest.xml

Like this:

... 

<receiver
    android:name="your.full.packagename.MyWakefulReceiver"
    android:process=":service"
    android:enabled="true"/>

<service
    android:name="your.full.packagename.MyLocationService"
    android:process=":service"/>

<service
    android:name="your.full.packagename.MySendService"
    android:process=":service"
    android:exported="false" />

...

I have tested this solution on Xiaomi Mi 5s. It's work !!!

IMHO it seems that the Xiaomi firmware kills the main process whenever the user exits the application...

Answer 3

I agree with you. But I think you should try with JobScheduler once. You will find official documentation https://developer.android.com/reference/android/app/job/JobScheduler.html Best example I find https://github.com/googlesamples/android-JobScheduler I don't have test it.according to me you have to try this.

EDIT

If you want to run your application in doze mode in 6.0 or later, you have to white list your application check out

https://www.bignerdranch.com/blog/diving-into-doze-mode-for-developers/

https://developer.android.com/training/monitoring-device-state/doze-standby.html

Imtiyaz

Answer 4

Probably these Chinese phones have disabled app wake for receiving alarm events to conserve battery life. I know that some Chinese makers don't wake app to receive push notifications if they are closed for battery conservation earlier. Thus until the app is manually opened again, it will not be woken up by the OS for any event processing.

However this behaviour can be changed. Check power management settings and change accordingly to allow apps to be woken up at regular intervals or when needed. I think it could be Restricted Mode or something similar.