private async Task <FaceDetection> DetectFaceAsync(MediaFile inputFile)
{
if (!CrossConnectivity.Current.IsConnected)
{
await DisplayAlert("ネットワークエラー", "ネット接続を確認してからリトライしてください。", "OK");
return(null);
}
try
{
var faces = await _faceServiceClient.DetectAsync(inputFile.GetStream(), false, false, (FaceAttributeType[])Enum.GetValues(typeof(FaceAttributeType)));
if (faces.Length == 0)
{
throw new Exception("顔を認識できませんでした。別の写真を試してください。");
}
var faceAttributes = faces[0]?.FaceAttributes;
var faceDetection = new FaceDetection();
faceDetection.Age = faceAttributes.Age;
faceDetection.Emotion = faceAttributes.Emotion.ToRankedList().FirstOrDefault().Key;
faceDetection.Glasses = faceAttributes.Glasses.ToString();
faceDetection.Smile = faceAttributes.Smile;
faceDetection.Gender = faceAttributes.Gender;
faceDetection.Moustache = faceAttributes.FacialHair.Moustache;
faceDetection.Beard = faceAttributes.FacialHair.Beard;
faceDetection.Anger = faceAttributes.Emotion.Anger;
faceDetection.Contempt = faceAttributes.Emotion.Contempt;
faceDetection.Disgust = faceAttributes.Emotion.Disgust;
faceDetection.Fear = faceAttributes.Emotion.Fear;
faceDetection.Happiness = faceAttributes.Emotion.Happiness;
faceDetection.Neutral = faceAttributes.Emotion.Neutral;
faceDetection.Sadness = faceAttributes.Emotion.Sadness;
faceDetection.Surprise = faceAttributes.Emotion.Surprise;
return(faceDetection);
}
catch (Exception ex)
{
await DisplayAlert("Error", ex.Message, "OK");
return(null);
}
}
private async void UploadPictureButton_Clicked(object sender, EventArgs e)
{
if (!CrossMedia.Current.IsPickPhotoSupported)
{
await DisplayAlert("アップロードできません", "この端末は写真の選択をサポートしていません", "OK");
return;
}
var file = await CrossMedia.Current.PickPhotoAsync();
if (file == null)
{
return;
}
Indicator1.IsRunning = true;
Image1.Source = ImageSource.FromStream(() => file.GetStream());
FaceDetection theData = await DetectFaceAsync(file);
BindingContext = theData;
Indicator1.IsRunning = false;
}