//Use the camera to take the picture and call microsoft cognitive service emotion api to find out the emotion of user
private async void TakePicture_Clicked(object sender, System.EventArgs e)
{
//Check permission of using camera
var cameraStatus = await CrossPermissions.Current.CheckPermissionStatusAsync(Permission.Camera);
var storageStatus = await CrossPermissions.Current.CheckPermissionStatusAsync(Permission.Storage);
if (cameraStatus != PermissionStatus.Granted || storageStatus != PermissionStatus.Granted)
{
var results = await CrossPermissions.Current.RequestPermissionsAsync(new[] { Permission.Camera, Permission.Storage });
cameraStatus = results[Permission.Camera];
storageStatus = results[Permission.Storage];
}
//successfully taken the photo
if (cameraStatus == PermissionStatus.Granted && storageStatus == PermissionStatus.Granted)
{
button.IsEnabled = false;
button2.IsEnabled = false;
var file = await CrossMedia.Current.TakePhotoAsync(new Plugin.Media.Abstractions.StoreCameraMediaOptions
{
DefaultCamera = Plugin.Media.Abstractions.CameraDevice.Front,
Directory = "Phase2",
Name = $"{DateTime.UtcNow}.jpg",
CompressionQuality = 92
});
//if photo has not been taken, enable the buttons
if (file == null)
{
button.IsEnabled = true;
button2.IsEnabled = true;
return;
}
//use the api key to call the external api to find out the emotion
try
{
string emotionKey = "ff39772d2a764944a93eee520503eb4b";
EmotionServiceClient emotionClient = new EmotionServiceClient(emotionKey);
//get the unprocessed result.
var emotionResults = await emotionClient.RecognizeAsync(file.GetStream());
var temp = emotionResults[0].Scores;
//store the result emotion of the client
var clientEmotion = temp.ToRankedList().First().Key;
//build the emotion model using the user facebook id and their emotion and the time it is taken.
EmotionModel model = new EmotionModel()
{
Name = profile.Name,
Emotion = clientEmotion,
updateTime = DateTime.Now.ToString(),
facebookId = profile.id
};
//change to food page to confirm if the client wants to order the dish.
ChangeToFoodPage(model);
button.IsEnabled = true;
button2.IsEnabled = true;
}
catch (Exception ex)
{
errorLabel.Text = ex.Message;
}
}
else
{
await DisplayAlert("Permissions Denied", "Unable to take photos.", "OK");
}
}
public async Task AddTimeLine(EmotionModel timeline)
{
await emotionTable.InsertAsync(timeline);
}
//Change page after photo has been taken
private async void ChangeToFoodPage(EmotionModel _emotionModel)
{
await Navigation.PushAsync(new FoodPage(_emotionModel, profile));
}
//basic layout of the page
public FoodPage(EmotionModel _emotionModel, FaceBookModel profile)
{
InitializeComponent();
NavigationPage.SetHasBackButton(this, false);
this._emotionModel = _emotionModel;
this.profile = profile;
var image = new Image {
Aspect = Aspect.AspectFit
};
var layout = new StackLayout {
Padding = new Thickness(5, 10)
};
//preview of the dishes based on the emotion
if (_emotionModel.Emotion.ToLower() == "happiness")
{
image.Source = ImageSource.FromFile("happyfood.jpg");
label = new Label {
Text = "You look happy. Do you want it?", TextColor = Color.FromHex("#77d065"), FontSize = 20
};
}
else if (_emotionModel.Emotion.ToLower() == "anger")
{
image.Source = ImageSource.FromFile("angryfood.jpg");
label = new Label {
Text = "You look angry. Do you want it?", TextColor = Color.FromHex("#77d065"), FontSize = 20
};
}
else if (_emotionModel.Emotion.ToLower() == "contempt")
{
image.Source = ImageSource.FromFile("contemptfood.jpg");
label = new Label {
Text = "You look contempt. Do you want it?", TextColor = Color.FromHex("#77d065"), FontSize = 20
};
}
else if (_emotionModel.Emotion.ToLower() == "disgust")
{
image.Source = ImageSource.FromFile("disgustfood.jpg");
label = new Label {
Text = "You look disgust. Do you want it?", TextColor = Color.FromHex("#77d065"), FontSize = 20
};
}
else if (_emotionModel.Emotion.ToLower() == "fear")
{
image.Source = ImageSource.FromFile("fearfood.jpg");
label = new Label {
Text = "You look fear. Do you want it?", TextColor = Color.FromHex("#77d065"), FontSize = 20
};
}
else if (_emotionModel.Emotion.ToLower() == "neutral")
{
image.Source = ImageSource.FromFile("neutralfood.jpg");
label = new Label {
Text = "You look alright. Do you want it?", TextColor = Color.FromHex("#77d065"), FontSize = 20
};
}
else if (_emotionModel.Emotion.ToLower() == "sadness")
{
image.Source = ImageSource.FromFile("sadnessfood.jpg");
label = new Label {
Text = "You look sad. Do you want it?", TextColor = Color.FromHex("#77d065"), FontSize = 20
};
}
else if (_emotionModel.Emotion.ToLower() == "surprise")
{
image.Source = ImageSource.FromFile("surprisefood.jpg");
label = new Label {
Text = "You look surprised. Do you want it?", TextColor = Color.FromHex("#77d065"), FontSize = 20
};
}
this.Content = layout;
button = new Button {
Text = "Order the food", BackgroundColor = Color.Silver, TextColor = Color.White, BorderRadius = 0
};
button.Clicked += SendOrder;
layout.Children.Add(image);
layout.Children.Add(label);
layout.Children.Add(button);
}