Android Question Wake Phone

Check the logs while the screen is off to see whether the service is started or not.

Hi Erel, thanks for replying.

The service is running with the screen off. The strange thing is. Whilst connected to B4A all works well but as soon as I disconnect the wireless it won't fire the alarm.
My guess is because B4A keeps the phone awake.

Jonathan

I use following modifided code from erel's showwhenlocked to wakeup my device if its screen off. Hope its help you.

Thank you for your reply, I tried the above code but it didn't work for me. It's as if the service stops running. I've also tried Service.StartForeground but to no avail.

Jonathan

PhoneWakeState.KeepAlive should turn on the screen. Maybe your device prevents the screen from waking to preserve battery.

Just for information:

I started a separate application with a service containing a 30 second timer. The timer contained PhoneWakeState and a 1 second vibrate. I started the service with StartServiceAt(svcStartAlarm, DateTime.Now, True) and made it a sticky service. I ran the app and switched the phone off. It work for about 4 minutes then stopped working.

I tried Service.StartForeground but this only worked for a minute before stopping. These have been run on a factory reset Samsung Galaxy s5 with kitkat.

Its my best guess that the service is being killed.

Jonathan

You can use StartServiceAt to rerun your service every few minutes. This will cause it to start again if the process was killed.

Thanks Erel, that worked perfect on my daughters S3 but still not on mine. Thinking this could be an android issue or bug. Thank you for your help.