Private Sub Button1_Click
    If EditText1.Text = "" Then
        xui.MsgboxAsync("Numero di telefono non inserito!","Attenzione")
    Else
        Tel=EditText1.text
    End If
    Dim ro As Object = Msgbox2Async("Vuoi telefonare al numero " & Tel & "?","Telefona al contatto","SI","","NO",Null,False)
    Wait For (ro) Msgbox_Result (res As Int)
    If res=DialogResponse.POSITIVE Then
        rp.CheckAndRequest(rp.PERMISSION_CALL_PHONE)
        Wait For Activity_Permissionresult(Permission As String, Result As Boolean)
    End If
End Sub
Private Sub B4XPage_Permissionresult(Permission As String,Result As Boolean)
    If Result=True Then
        Dim ph As PhoneCalls
        StartActivity(ph.Call(Tel))
    End If
End Sub