| public static SetError ( String errorString ) : void | ||
| errorString | String | an exception or error thrown by the app |
| return | void | |
private async Task <int> getImageFromURL()
{
string errorMessage = "";
if (string.IsNullOrEmpty(URL.Text) || URL.Text.Equals("Please Enter a URL"))
{
URL.Text = "Please Enter a URL";
}
else
{
try
{
String input = URL.Text;
Uri uri = new Uri(input);
var currentApp = (App)App.Current;
var rass = RandomAccessStreamReference.CreateFromUri(uri);
var stream = (await rass.OpenReadAsync()).AsStream();
int len = (int)stream.Length;
byte[] buff = new byte[len];
int pos = 0;
int r = 0;
while ((r = stream.Read(buff, pos, len - pos)) > 0)
{
pos += r;
}
currentApp.CurrentImageRecog = new MemoryStream(buff);
try
{
currentApp.CurrentRecogResult = await App.VMHub.ProcessRequest(buff);
Frame.Navigate(typeof(WindowsApp.Views.RecogResultPage), "url");
return(0);
}
catch (Exception ex)
{
errorMessage = ex.Message;
}
NetworkError.SetError(errorMessage);
Frame.Navigate(typeof(NetworkError));
}
catch
{
URL.Text = "An image could not be found at this address";
errorImage.Visibility = Visibility.Visible;
errorText.Visibility = Visibility.Visible;
}
}
return(0);
}
private async Task <int> UpdateProviderInfo()
{
string errorMessage = "";
try
{
var currentApp = (App)App.Current;
this.CurrentProvider.Text = "";
App.VMHub.CurrentProvider = currentApp.CurrentProvider;
if (!Object.ReferenceEquals(currentApp.CurrentProvider, null))
{
this.CurrentProvider.Text = currentApp.CurrentProvider.RecogEngineName;
AddProvider(currentApp.CurrentProvider);
this.LastProvider = currentApp.CurrentProvider;
}
{
var lst = await App.VMHub.GetActiveProviders();
foreach (var item in lst)
{
if (lst == null)
{
return(0);
}
AddProvider(item);
}
}
var cnt = (double)(this.ProviderList.Count);
if (String.IsNullOrEmpty(CurrentProvider.Text) && cnt > 0)
{
LastProvider = ProviderList[0];
CurrentProvider.Text = LastProvider.RecogEngineName;
}
this.ViewOfProvider.Height = cnt * 140.0;
return(0);
}
catch (Exception ex)
{
errorMessage = ex.Message;
}
NetworkError.SetError(errorMessage);
Frame.Navigate(typeof(NetworkError));
return(0);
}
/// <summary>
/// resumes the application after choosing a photo from the photo library
/// </summary>
/// <param name="args"></param>
public async void ContinueFileOpenPicker(FileOpenPickerContinuationEventArgs args)
{
string errorMessage = "";
if (args.Files.Count > 0)
{
MemoryStream stream;
var currentApp = (App)App.Current;
IReadOnlyList <StorageFile> files = args.Files;
var ms = await ReadFile(args.Files[0]);
if (Object.ReferenceEquals(ms, null))
{
currentApp.CurrentRecogResult = "no image selected. ";
}
else
{
stream = new MemoryStream(ms);
currentApp.CurrentImageRecog = stream;
Byte[] buf = await ResizeImage(stream, 256);
try
{
await this.processRequestAfterRotate(buf);
return;
}
catch (Exception ex)
{
errorMessage = ex.Message;
}
NetworkError.SetError(errorMessage);
Frame.Navigate(typeof(NetworkError));
}
}
else
{
Frame.Navigate(typeof(OptionsPage));
}
}
private async Task <int> processRequestAfterRotate(byte[] buf)
{
string errorMessage = "";
try
{
var currentApp = (App)App.Current;
currentApp.CurrentRecogResult = await App.VMHub.ProcessRequest(buf);
Frame.Navigate(typeof(WindowsApp.Views.RecogResultPage), "Upload Picture");
return(0);
}
catch (Exception ex)
{
errorMessage = ex.Message;
}
NetworkError.SetError(errorMessage);
Frame.Navigate(typeof(NetworkError));
return(0);
}