void Scan()
{
var opts = new MobileBarcodeScanningOptions {
CameraResolutionSelector = availableResolutions => {
foreach (var ar in availableResolutions)
{
Console.WriteLine("Resolution: " + ar.Width + "x" + ar.Height);
}
return(null);
}
};
scanFragment.StartScanning(result => {
var resultIntent = new Intent();
string resultText;
// Null result means scanning was cancelled
if (result == null || string.IsNullOrEmpty(result.Text))
{
resultText = "";
}
else
{
resultText = result.Text;
}
// Otherwise, proceed with result
resultIntent.PutExtra(Activity1.RESULT_EXTRA_NAME, resultText);
SetResult(Result.Ok, resultIntent);
Finish();
}, opts);
}
void scan()
{
var opts = new MobileBarcodeScanningOptions
{
PossibleFormats = new List <ZXing.BarcodeFormat> {
ZXing.BarcodeFormat.QR_CODE
},
CameraResolutionSelector = availableResolutions =>
{
foreach (var ar in availableResolutions)
{
Console.WriteLine("Resolution: " + ar.Width + "x" + ar.Height);
}
return(null);
}
};
scanFragment.StartScanning(result =>
{
// Null result means scanning was cancelled
if (result == null || string.IsNullOrEmpty(result.Text))
{
Toast.MakeText(this, "Scanning Cancelled", ToastLength.Long).Show();
return;
}
// Otherwise, proceed with result
RunOnUiThread(() => Toast.MakeText(this, "Scanned: " + result.Text, ToastLength.Short).Show());
}, opts);
}
protected override void OnResume()
{
base.OnResume();
if (PermissionsHandler.NeedsPermissionRequest(this))
{
PermissionsHandler.RequestPermissionsAsync(this);
}
_scanner.StartScanning(result =>
{
if (!result.Text.Contains(":"))
{
return;
}
RunOnUiThread(() =>
{
try
{
Toast.MakeText(this, "Request Scanned. Please wait.", ToastLength.Long).Show();
}
catch (Exception e)
{
var f = e;
}
});
QrCodeScanCommand.Execute(result.Text);
},
MobileBarcodeScanningOptions.Default);
}
protected override void OnResume()
{
base.OnResume();
if (scanFragment == null)
{
scanFragment = new CustomScannerFragment
{
BottomText = learningTask.Description
};
SupportFragmentManager.BeginTransaction()
.Replace(Resource.Id.fragment_container, scanFragment)
.Commit();
}
bool needsPermission = PermissionsHandler.NeedsPermissionRequest(this);
if (needsPermission)
{
PermissionsHandler.RequestPermissionsAsync(this);
}
else
{
scanFragment.StartScanning(OnScanResult, GetOptions());
}
}
public void StartScanner(ScanCompleteDelegate scd)
{
m_scdNotify = scd;
m_scannerControl.StartScanning(async(result) =>
{
var msg = "Found Barcode: " + result.Text;
await Task.Run(() => m_scdNotify(result));
}, m_options);
}
void Scan()
{
var opts = new MobileBarcodeScanningOptions();
opts.UseFrontCameraIfAvailable = Settings.GetBoolean("UseFrontCameraForEANScan", false);
scanFragment.StartScanning(result =>
{
// Null result means scanning was cancelled
if (result == null || string.IsNullOrEmpty(result.Text))
{
Toast.MakeText(this, "Scanning Cancelled", ToastLength.Long).Show();
return;
}
RunOnUiThread(() =>
{
Intent intent = new Intent();
intent.PutExtra("EANCode", result.Text);
this.SetResult(Result.Ok, intent);
this.OnBackPressed();
});
}, opts);
}
private void StartScanningForQRCode()
{
var opts = new MobileBarcodeScanningOptions
{
PossibleFormats = new List <ZXing.BarcodeFormat> {
ZXing.BarcodeFormat.QR_CODE
},
CameraResolutionSelector = availableResolutions => { return(null); },
AutoRotate = false,
TryHarder = false,
UseFrontCameraIfAvailable = true,
};
_scanFragment.StartScanning(result =>
{
// Null result means scanning was cancelled
if (result == null || string.IsNullOrEmpty(result.Text))
{
Toast.MakeText(this, "Scanning Cancelled", ToastLength.Long).Show();
return;
}
// Otherwise, proceed with result
try
{
_scanFragment.PauseAnalysis();
var url = new Uri(result.Text);
// if we don't have a command, exit
if (url.Segments.Length < 2)
{
throw new Exception("QR Code not recognised");
}
string command = url.Segments[1].Replace("/", "");
switch (command)
{
case "deploymentUser":
// if the command isn't exit and we don't have an id to look for, exit
if (url.Segments.Length != 3)
{
throw new Exception("Invalid QR code");
}
int deploymentUserId = Int32.Parse(url.Segments[2]);
DeploymentUser deploymentUser = _deploymentUsers.SingleOrDefault(du => du.id == deploymentUserId);
if (deploymentUser == null)
{
throw new Exception("Invalid QR code");
}
else
{
RunOnUiThread(() =>
{
_webViewClient.DeviceScanned(_webView, deploymentUser);
});
}
break;
case "food":
if (url.Segments.Length != 3)
{
throw new Exception("Invalid QR code");
}
int foodId = Int32.Parse(url.Segments[2]);
// fire off food event
RunOnUiThread(() =>
{
_webViewClient.FoodScanned(_webView, foodId);
});
break;
case "exit":
// fire off exit event
RunOnUiThread(() =>
{
_webViewClient.ExitTablet(_webView);
_webView.LoadUrl("javascript:location.reload(true)");
});
break;
default:
throw new Exception("QR code command not found");
}
}
catch (Exception e)
{
RunOnUiThread(() =>
{
Toast.MakeText(this, "Oops I can't understand that", ToastLength.Long).Show();
});
Crashes.TrackError(e);
}
_scanFragment.ResumeAnalysis();
}, opts);
}
