Android Question Trigger "GPS Shut down" event

[Mike1970]

Hi, i'm working with the gps, and i was wondering if there is a way to detect when the gps is toggled off by the user, so i can show a msgbox (or a notfication) to say to enable the gps again

 

[Erel]

Yes. Handle the UserEnabled event.

 

[Mike1970]

Yes. Handle the UserEnabled event.

I put this event in the Tracker Service of this tutorial: https://www.b4x.com/android/forum/threads/background-location-tracking.99873/

I wrote:

Sub GPS_UserEnabled (Enabled As Boolean)
    If Enabled == False Then
        Msgbox("Enable the gps", "GPS Off")
    End If
End Sub

But it give me this error:

android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application

 

[Erel]

1. Never use Msgbox. Only MsgboxAsync.
2. You cannot show any UI other than toast messages from services.

You can start an activity.

 

[Mike1970]

2. You cannot show any UI other than toast messages from services.

Interesting, thanks Erel!