protected async Task PickImage()
    {
        try
        {
            Stream stream = await DependencyService.Get<IPicturePicker>().GetImageStreamAsync();
            //stream.GetType<Uri>();
            if (stream != null)
            {
                Image image = new Image
                {
                    Source = ImageSource.FromStream(() => stream),
                    BackgroundColor = Color.Gray
                };

                cadastrar_foto_perfil.Source = ImageSource.FromStream(() => stream);

            }

            if (Device.OS == TargetPlatform.iOS)
            {
                loginPage.RecriaCadastroIOS();
            }
        }