void ProcessScanResults(ScanSession session)
{
if (session == null)
{
return;
}
if (session.NewlyRecognizedCodes != null && session.NewlyRecognizedCodes.Any())
{
var firstCode = session.NewlyRecognizedCodes.First();
session.StopScanning();
// Because this event handler is called from an scanner-internal thread,
// you must make sure to dispatch to the main thread for any UI work.
Device.BeginInvokeOnMainThread(async() =>
{
ScanditService.BarcodePicker.DidScan -= ProcessScanResults;
if (firstCode != null)
{
// This delay is needed because the app will crash if we too quickly transition to another page when the scanner is closing
// This gives time for this page to load before going to item details page
await Task.Delay(200);
await ScanSearch(firstCode);
}
});
}
else
{
session.StopScanning();
}
}
private async void OnCodesScanned(ScanSession session)
{
session.StopScanning();
var firstCode = session.NewlyRecognizedCodes.First();
var text = String.Format("{0} ({1})", firstCode.Data, firstCode.SymbologyString.ToUpper());
//if (await Application.Current.MainPage.DisplayAlert("Are you sure to include it in the collection", $"You have scanned {text}", "Yes", "No"))
//{
if (!Products.Any(p => p.BarCode == text))
{
Products.Insert(0, new Product()
{
BarCode = text, Units = 1
});
}
else
{
var product = _products.Single(p => p.BarCode == text);
_products.Remove(product);
product.Units++;
Products.Insert(0, product);
}
//}
//await ScanditService.BarcodePicker.StartScanningAsync(false);
}
void OnDidScan(ScanSession session)
{
// guaranteed to always have at least one element, so we don't have to
// check the size of the NewlyRecognizedCodes array.
var firstCode = session.NewlyRecognizedCodes.First();
var message = string.Format("Code Scanned:\n {0}\n({1})", firstCode.Data, firstCode.SymbologyString.ToUpper());
// Because this event handler is called from an scanner-internal thread,
// you must make sure to dispatch to the main thread for any UI work.
Device.BeginInvokeOnMainThread(() => this.ResultLabel.Text = message);
session.StopScanning();
}
void OnDidScan(ScanSession session)
{
var firstCode = session.NewlyRecognizedCodes.First();
var message = "";
if (session.NewlyRecognizedCodes.Count() == 1)
{
message = string.Format("Code Scanned:\n {0}\n({1})", firstCode.Data,
firstCode.SymbologyString.ToUpper());
}
else if (session.NewlyRecognizedCodes.Count() > 1)
{
var secondCode = session.NewlyRecognizedCodes.ElementAt(1);
message = string.Format("Codes Scanned:\n {0}\n({1})\n {2}\n({3})",
firstCode.Data,
firstCode.SymbologyString.ToUpper(),
secondCode.Data,
secondCode.SymbologyString.ToUpper());
}
// Because this event handler is called from an scanner-internal thread,
// you must make sure to dispatch to the main thread for any UI work.
Device.BeginInvokeOnMainThread(() => this.ResultLabel.Text = message);
session.StopScanning();
}