Android Question StartActivity from Service

Erel said:

Note that starting from Android 10 it is no longer possible to start activities while the app is in the background (foreground service will not help here).

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The app has been granted the SYSTEM_ALERT_WINDOW permission by the user.

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Apps running on Android 10 (Go edition) cannot receive the SYSTEM_ALERT_WINDOW permission.

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OliverA said:

This solutions has been tested and confirmed to be working by @Jmu5667

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AddPermission(android.permission.SYSTEM_ALERT_WINDOW)

Sub Activity_Resume
 
   Dim p As Phone
 
   If p.SdkVersion > 28 Then
       Dim c As cls_request_drawover_persmission
       c.Initialize
       Wait For (c.GetPermission) Complete (Success As Boolean)
   End If

end sub

Sub Class_Globals

   Private ion As Object

End Sub

Public Sub Initialize

End Sub

Public Sub GetPermission As ResumableSub

   Dim jo As JavaObject
   jo.InitializeStatic("android.provider.Settings")
   Dim ctxt As JavaObject
   ctxt.InitializeContext
 
   ' // we already have it
   If jo.RunMethod("canDrawOverlays", Array(ctxt)) = True Then
       Return True
   End If
 
   ' // request it
   Dim i As Intent
   i.Initialize("android.settings.action.MANAGE_OVERLAY_PERMISSION", "package:" & Application.PackageName)
   StartActivityForResult(i)
   Wait For ion_Event (MethodName As String, Args() As Object)
   Return jo.RunMethod("canDrawOverlays", Array(ctxt))

End Sub

Private Sub StartActivityForResult(i As Intent)
 
   Dim jo As JavaObject = GetBA
   ion = jo.CreateEvent("anywheresoftware.b4a.IOnActivityResult", "ion", Null)
   jo.RunMethod("startActivityForResult", Array As Object(ion, i))
 
End Sub

Private Sub GetBA As Object
 
   Dim jo As JavaObject = Me
   Return jo.RunMethod("getBA", Null)
 
End Sub

Erel said:

There is no such permission: AddPermission(android.permission.SYSTEM_OVERLAY_WINDOW)

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JohnC said:

Am I correct in thinking that if I set my app's TargetSDK to 22, then I can freely start an activity from a service and won't need to use this code?

NOTE: The app will NOT be in the play store.

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JohnC said:

This is for an app running on FireOS, which is not a full-fledge android version because it doesn't offer the user a UI setting to enable or deny draw-over-other-apps permission on a per-app basis.

So, I need to keep the target SDK below 23.

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