PartialLock didn't keep service alive?

[susu]

Hi, I create a service that will turn screen on when an event raise. After 5 seconds, I want to turn screen off and service need to keep running. Because I don't know how to turn screen on/off automatically so I use PhoneWakeState to do it. I thought PhoneWakeState.PartialLock can keep service running but it not. Any suggestion for me? Thank you.

Dim ph As PhoneWakeState
Dim t as Timer
t.Initialize("t", 5000)

Sub Service_Start (StartingIntent As Intent)
      ' Some code
   ph.PartialLock
   Service.StartForeground(1, noti)
      ' Some code
End Sub

' Some code to handle event


Sub TurnScreenOn
      ph.ReleaseKeepAlive
      ph.KeepAlive(True)     ' Turn screen on
      t.Enabled = True
End Sub

Sub t_tick
      TurnScreenOff     ' Turn screen off after 5 seconds
End Sub

Sub TurnScreenOff
      ph.ReleaseKeepAlive   ' Turn screen off
      ph.PartialLock      ' Try to keep service running but... failed!
End Sub

 

[Erel]

How do you see that the service is not running?

 

[susu]

How do you see that the service is not running?

1. The service didn't handle when event raised.
2. The notification icon is gone (I set notification OnGoing).

 

[Erel]

1. Which event?
2. Does the icon disappear after 5 seconds?

 

[susu]

1. Event capture by a library. It worked perfect when I press power button if there NOT ph.ReleaseKeepAlive in TurnScreenOff sub.
2. No, it didn't disappear after 5 seconds. It gone after some time.

 

[Erel]

You are not disabling the timer so it will continue to raise the tick event every 5 seconds. Try to disable it in t_tick.

 

[susu]

Yes, I disabled timer in t_tick but it didn't fix the issue.

I noticed that only Samsung phone with Android 2.3.6 got this error:

Case 1: The screen is on => Event always raised.
Case 2: I press power button to turn screen off => Event raised, the screen turn on automatically.
Case 3: After case 2 about 5 minutes, it didn't work. (I thought the service was killed by OS). I press power button to turn screen on, open activity by click on notification icon => it still didn't work. I need to stop and restart service to make it work again (So the OS really killed the service).

HTC phone with Android 2.3.4 worked correctly.

Erel, if you don't understand what I said, I can send you my project code

 

[Erel]

Which event are you capturing? How are you capturing it?

 

[susu]

The service capture "whistle" event by using a library.

 

[Erel]

Maybe the problem is in that library.

Add another timer that logs some message and see whether it stops after sometime.

 

[susu]

If the problem is in library, why the service works correctly on Android 2.3.4?

 

[Erel]

This is only a test.

There are no problems in PhoneWakeState code. It is just a wrapper for the native functions.