Android Question StartServiceAt() quetion

[jayshen]

I made a project with B4A_3.82 + JDK_1.7 + API_19 about many years ago.

It runs normally in Android 4.4 devices.

But it runs abnormally in Android 5.0 or above devices.

StartServiceAt("", DateTime.Now + 1000, True)

It runs every 1000 ms in Android 4.4 devices , but it runs every 5000 ms to 7000 ms in Android 5.0 or above devices.

How should I resolve the problem ?

 

[OliverA]

Maybe this? https://www.b4x.com/android/forum/t...estartatexact-not-accurate.65117/#post-412286
Looks like newer versions of B4A do not need @Erel's posted workaround and one can just use StartServiceAtExact. See: https://www.b4x.com/android/forum/threads/b4a-v8-00-startserviceat-startserviceatexact-setexactandallowwhileidle.90804/#post-574099
I'm just guessing though...

 

[Erel]

You must use B4A v8+ if you want to start from the background on Android 8+ devices.

The minimum interval on new devices is 15 or 30 minutes.

 

[jay0103]

I use StartServiceAtExact() and the condition is the same.
If the minium interval is 15 or 30 minutes, how do I count per second on Android 5 devices ?
Would you please give me e a easy example ?

 

[Erel]

how do I count per second on Android 5 devices ?

Use a timer. Why are you using StartServiceAt?

 

[jay0103]

I need to work in the background, but timer can't work in the background.

 

[Erel]

Timer can work in the background. You will need to use a foreground service to prevent the OS from killing the process. You should also use PhoneWakeState if you want to prevent the device from sleeping.

 

[jay0103]

I will try it. Think you.
Another question , Can I only use a timer for multiple activity modules ?

 

[Erel]

Another question , Can I only use a timer for multiple activity modules ?

Put the timer in the starter service.

 

[jay0103]

I have resolved my problem. Thanks for your support.