Android Question SOLVED - DEMO App provided - Log Off User when Device Goes to Sleep

[tdocs2]

Greetings, all.

I have seen a lot of threads related to the device sleep subject, but none seem to hit the mark for my purposes. My question is:

Would the following steps accomplish the task of logging off the user in my app when the device goes to sleep?

1. Device is going to sleep
2. I prevent it by PhoneWakeState.KeepAlive (I assume this goes in Act Pause.)
3. Log off user in my app
4. Release KeepAlive

Since I have no experience in this area, does anyone have a code snippet on this? I am certain that this requirement is not new.

Thank you in advance for your replies.

Sandy

 

[Erel]

You don't need to use PhoneWakeState here. Instead use PhoneEvents in a service to monitor the ScreenOff event. Log out the user when it fires.

 

[tdocs2]

Thank you, Erel.

 

[tdocs2]

Greetings.

I tried the PhoneEvents (zero experience in this area and weak on Services)

This is the code (which must be wrong because it is not working):

Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'These variables can be accessed from all modules.
    Public PE As PhoneEvents
End Sub
Sub Service_Create
    PE.initialize("PE")
End Sub

Sub Service_Start (StartingIntent As Intent)
  
End Sub

Sub Service_Destroy

End Sub
Sub PE_ScreenOff
    CallSub(Main,"ResetMain") ' logs off user
  
End Sub

Any help will be appreciated.

Sandy

 

[Erel]

The activity will most probably be paused when the event fires. You need to log the user out with service code.

You can also use CallSubDelayed to call the Main activity. The message will be queued until the activity is resumed.

 

[tdocs2]

Thank you, Erel.

I will make changes and test some more.

Best regards.

Sandy

 

[tdocs2]

IT WORKS! Thanks, again, Erel.

I attach small demo project for those who want to apply this concept. See documentation for PhoneEvents for all events detected by the service.