private async Task Analyze() { if (Photo == null || string.IsNullOrEmpty(pathImage) || pathImage == "default.jpg") { await Application.Current.MainPage.DisplayAlert("Xamarin Latino", "No has seleccionado una foto", "Ok"); return; } IsBusy = true; try { var age = await service.DetectAge(pathImage); if (age > 0) { this.Age = (int)age; } } catch { await Application.Current.MainPage.DisplayAlert("Xamarin Latino", "No se pudo evaluar la foto", "Ok"); } IsBusy = false; }