Android Question Keep on the timer tick event when the user push on/off hardware button

Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'These variables can be accessed from all modules.
Dim PE As PhoneEvents
    Dim nNotify As Notification 
    Dim pw1 As PhoneWakeState

End Sub
Sub Service_Create
    nNotify.Initialize
    nNotify.Icon = "icon"
    nNotify.SetInfo("Welding", "Tap to open welding", Welding)
    nNotify.Sound=False
    nNotify.Vibrate=False
    nNotify.Light=False
    nNotify.OnGoingEvent=True
    Service.StartForeground(1,nNotify)

    PE.Initialize ("PE")
  
End Sub
Sub Service_Start (StartingIntent As Intent)
    pw1.KeepAlive (True)

End Sub
Sub Service_Destroy

End Sub
Sub PE_screenoff (Intent As Intent)
    StartServiceAt("", DateTime.Now, True)
End Sub