Android Question getting google accounts on android 8 & 9

AddManifestText(
<uses-sdk android:minSdkVersion="5" android:targetSdkVersion="26"/>
<supports-screens android:largeScreens="true"
    android:normalScreens="true"
    android:smallScreens="true"
    android:anyDensity="true"/>)
SetApplicationAttribute(android:icon, "@drawable/icon")
SetApplicationAttribute(android:label, "$LABEL$")
CreateResourceFromFile(Macro, Themes.DarkTheme)
'End of default text.

AddPermission(android.permission.GET_ACCOUNTS)

Sub Activity_Create(FirstTime As Boolean)
   'Do not forget to load the layout file created with the visual designer. For example:
   Activity.LoadLayout("1")

      
   rup.CheckAndRequest(rup.PERMISSION_GET_ACCOUNTS)
   Wait For Activity_PermissionResult(Permission As String, Result As Boolean)
   If Result Then
       Gaccount = Result
   Else
   End If
Dim Googleaccounts as string


Googleaccounts = GetGoogleaccounst 

log("Email : " & Googleaccounts) 'is empty on android 8 and 9

End Sub


Sub GetGoogleaccounst As String
    Dim r As Reflector
    r.Target = r.RunStaticMethod("android.accounts.AccountManager", "get", _
      Array As Object(r.GetContext), Array As String("android.content.Context"))
    Dim accounts() As Object
    accounts = r.RunMethod2("getAccountsByType","com.google", "java.lang.String")
    For i = 0 To accounts.Length - 1
        r.Target = accounts(i)
        Dim accountName As String
        accountName = r.GetField("name")
        Log(accountName)
    Next
    
    Return accountName
    
    
End Sub