private async Task MakePredictionRequest(MediaFile file)
{
try
{
Contract.Ensures(Contract.Result <Task>() != null);
var client = new HttpClient();
client.DefaultRequestHeaders.Add("Prediction-Key", "9b2cd115e674489c892a12aa9b4747f2");
string url = "https://southcentralus.api.cognitive.microsoft.com/customvision/v1.0/Prediction/9ced7a98-a868-45b5-a7ca-e9112877744a/image?iterationId=decd2fad-4dfe-4c98-a7f3-7b82e1b058e6";
HttpResponseMessage response;
byte[] byteData = GetImageAsByteArray(file);
using (var content = new ByteArrayContent(byteData))
{
content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
response = await client.PostAsync(url, content);
if (response.IsSuccessStatusCode)
{
var responseString = await response.Content.ReadAsStringAsync();
EvaluationModel responseModel = JsonConvert.DeserializeObject <EvaluationModel>(responseString);
List <Prediction> predictions = responseModel.Predictions;
foreach (Prediction prediction in predictions)
{
if (prediction.Probability >= 0.8)
{
var locator = CrossGeolocator.Current;
locator.DesiredAccuracy = 50;
var position = await locator.GetPositionAsync(10000);
foodLabel.Text = prediction.Tag;
shareButton.IsVisible = true;
unsentModel = new FoodLocationModel()
{
Title = prediction.Tag,
Longitude = (float)position.Longitude,
Latitude = (float)position.Latitude
};
file.Dispose();
return;
}
}
foodLabel.Text = "What is this? Is this even food?";
}
//Get rid of file once we have finished using it
file.Dispose();
}
} catch (Exception e)
{
Console.WriteLine("{0} Exception caught", e);
}
}
public async Task PostFoodLocation(FoodLocationModel model)
{
try
{
await this.foodLocationTable.InsertAsync(model);
}
catch (Exception e)
{
Console.WriteLine("{0} Exception caught", e);
}
}
private async void ShareButtonClicked(object sender, EventArgs e)
{
try
{
if (unsentModel == null)
{
await(DisplayAlert("Warning", "Please upload/reupload an image", "OK"));
return;
}
await(DisplayAlert("Uploaded", "Food Location has been uploaded", "OK"));
await AzureManager.AzureManagerInstance.PostFoodLocation(unsentModel);
unsentModel = null;
} catch (Exception error)
{
Console.WriteLine("{0} Exception.", error);
}
}
private async void addFoodLocationToDB(FoodLocationModel model)
{
await AzureManager.AzureManagerInstance.PostFoodLocation(model);
}
public MainPage()
{
InitializeComponent();
unsentModel = null;
}
