Exemple #1
0
        //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");
            }
        }
Exemple #2
0
 public async Task AddTimeLine(EmotionModel timeline)
 {
     await emotionTable.InsertAsync(timeline);
 }
Exemple #3
0
 //Change page after photo has been taken
 private async void ChangeToFoodPage(EmotionModel _emotionModel)
 {
     await Navigation.PushAsync(new FoodPage(_emotionModel, profile));
 }
Exemple #4
0
        //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);
        }