protected override void OnElementChanged(VisualElementChangedEventArgs e)
{
base.OnElementChanged(e);
if (e.OldElement != null || Element == null)
{
return;
}
try
{
// Initializing the energy module.
_frame = UIScreen.MainScreen.ApplicationFrame;
// Search for the navigation controller
UINavigationController nav = null;
foreach (var vc in
UIApplication.SharedApplication.Windows[0].RootViewController.ChildViewControllers)
{
if (vc is UINavigationController)
{
nav = (UINavigationController)vc;
}
}
_frame = new CGRect(_frame.X,
_frame.Y + nav.NavigationBar.Frame.Size.Height,
_frame.Width,
_frame.Height - nav.NavigationBar.Frame.Size.Height);
_scanView = new AnylineEnergyModuleView(_frame);
_error = null;
var success = _scanView.SetupWithLicenseKey(LicenseKey, Self, out _error);
if (!success)
{
(_alert = new UIAlertView("Error", _error.DebugDescription, (IUIAlertViewDelegate)null, "OK", null)).Show();
}
_scanView.CancelOnResult = true;
// After setup, add the scanView to the view
View.AddSubview(_scanView);
_error = null;
_scanView.SetScanMode(ALScanMode.AnalogMeter, out _error);
if (_error != null)
{
(_alert = new UIAlertView("Error", _error.DebugDescription, (IUIAlertViewDelegate)null, "OK", null)).Show();
}
// Start scanning
StartScanning();
}
catch (Exception ex)
{
Debug.WriteLine(@"ERROR: ", ex.Message);
}
}
public override void ViewDidDisappear(bool animated)
{
base.ViewDidDisappear(animated);
//don't clean up objects, if we want the controller to be kept alive
if (keepScanViewControllerAlive)
{
return;
}
//we have to un-register the event handlers because else the whole viewcontroller will be kept in the garbage collector.
if (meterTypeSegment != null)
{
meterTypeSegment.ValueChanged -= HandleSegmentChange;
}
if (meterTypeSegment != null)
{
meterTypeSegment.Dispose();
}
meterTypeSegment = null;
if (selectionLabel != null)
{
selectionLabel.Dispose();
}
selectionLabel = null;
if (infoLabel != null)
{
infoLabel.Dispose();
}
infoLabel = null;
segmentItems = null;
if (alert != null)
{
alert.Dispose();
}
alert = null;
if (error != null)
{
error.Dispose();
}
error = null;
//we have to erase the scan view so that there are no dependencies for the viewcontroller left.
anylineEnergyView.RemoveFromSuperview();
anylineEnergyView.Dispose();
anylineEnergyView = null;
base.Dispose();
}
void IAnylineEnergyModuleDelegate.DidFindResult(AnylineEnergyModuleView anylineEnergyModuleView, ALEnergyResult scanResult)
{
Debug.WriteLine(scanResult.Result.ToString(), @"Result: ");
_alert = new UIAlertView("Result", scanResult.Result.ToString(), (IUIAlertViewDelegate)null, "OK", null);
_alert.Clicked += (e, a) => {
StartScanning();
};
_alert.Show();
}
/*
* This is the main delegate method Anyline uses to report its scanned codes
*/
void IAnylineEnergyModuleDelegate.DidFindScanResult(AnylineEnergyModuleView anylineEnergyModuleView, string scanResult, UIImage image, UIImage fullImage, ALScanMode scanMode)
{
StopAnyline();
//we'll go to a temporary new view controller, so we keep this one alive
keepScanViewControllerAlive = true;
try
{
AnylineEnergyScanViewResultController vc = new AnylineEnergyScanViewResultController(scanResult, scanMode);
vc.MeterImage = image;
NavigationController.PushViewController(vc, true);
}
catch (Exception) { }
}
/*
* This is the main delegate method Anyline uses to report its scanned codes
*/
void IAnylineEnergyModuleDelegate.DidFindResult(AnylineEnergyModuleView anylineEnergyModuleView, ALEnergyResult scanResult)
{
StopAnyline();
//we'll go to a temporary new view controller, so we keep this one alive
_keepScanViewControllerAlive = true;
try
{
AnylineEnergyScanViewResultController vc = new AnylineEnergyScanViewResultController(scanResult.Result.ToString(), scanResult.ScanMode, _barcodeResult);
vc.MeterImage = scanResult.Image;
NavigationController.PushViewController(vc, true);
}
catch (Exception)
{
// ignored
}
}
new void Dispose()
{
//we have to un-register the event handlers because else the whole viewcontroller will be kept in the garbage collector.
if (_meterTypeSegment != null)
{
_meterTypeSegment.ValueChanged -= HandleSegmentChange;
}
_meterTypeSegment?.Dispose();
_selectionLabel?.Dispose();
_toggleBarcodeLabel.RemoveFromSuperview();
_toggleBarcodeLabel?.Dispose();
_toggleBarcodeSwitch.ValueChanged -= OnValueChanged;
_toggleBarcodeSwitch.RemoveFromSuperview();
_toggleBarcodeSwitch?.Dispose();
_toggleBarcodeView.RemoveFromSuperview();
_toggleBarcodeView?.Dispose();
_segmentItems = null;
_alert?.Dispose();
_error?.Dispose();
//we have to erase the scan view so that there are no dependencies for the viewcontroller left.
_anylineEnergyView?.RemoveFromSuperview();
_anylineEnergyView?.Dispose();
_anylineEnergyView = null;
GC.Collect(GC.MaxGeneration);
base.Dispose();
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
// Initializing the energy module.
_frame = UIScreen.MainScreen.ApplicationFrame;
_frame = new CGRect(_frame.X,
_frame.Y + NavigationController.NavigationBar.Frame.Size.Height,
_frame.Width,
_frame.Height - NavigationController.NavigationBar.Frame.Size.Height);
_anylineEnergyView = new AnylineEnergyModuleView(_frame);
_error = null;
_success = _anylineEnergyView.SetupWithLicenseKey(_licenseKey, Self, out _error);
if (!_success)
{
(_alert = new UIAlertView("Error", _error.DebugDescription, (IUIAlertViewDelegate)null, "OK", null)).Show();
}
// We'll stop scanning manually
_anylineEnergyView.CancelOnResult = false;
// After setup is complete we add the module to the view of this view controller
View.AddSubview(_anylineEnergyView);
_error = null;
_anylineEnergyView.SetScanMode(_segmentItems.ElementAt(_defaultIndex).Value, out _error);
if (_error != null)
{
(_alert = new UIAlertView("Error", _error.DebugDescription, (IUIAlertViewDelegate)null, "OK", null)).Show();
}
// Create a subview for toggling native barcode scanning:
_toggleBarcodeView = new UIView(new CGRect(0, 0, 150, 50));
_toggleBarcodeLabel = new UILabel(new CGRect(0, 0, 100, 30));
_toggleBarcodeLabel.Text = "Detect Barcodes";
_toggleBarcodeLabel.TextColor = UIColor.White;
_toggleBarcodeLabel.SizeToFit();
_toggleBarcodeSwitch = new UISwitch();
_toggleBarcodeSwitch.On = false;
_toggleBarcodeSwitch.TintColor = UIColor.White;
_toggleBarcodeSwitch.OnTintColor = new UIColor(0, 153 / 255, 1, 1);
_toggleBarcodeSwitch.ValueChanged += OnValueChanged;
_toggleBarcodeView.AddSubview(_toggleBarcodeLabel);
_toggleBarcodeView.AddSubview(_toggleBarcodeSwitch);
if (Title != "Heat Meter Scan")
{
View.AddSubview(_toggleBarcodeView);
}
// We don't need a segment control for only one option:
if (_segmentItems.Count > 1)
{
List <string> list = new List <string>();
foreach (var key in _segmentItems.Keys)
{
list.Add(key);
}
var obj = list.ToArray <object>();
_meterTypeSegment = new UISegmentedControl(obj);
//adjust the segmentcontrol size so all elements fit to the view
if (_meterTypeSegment.NumberOfSegments > 3)
{
for (int i = 0; i < _meterTypeSegment.NumberOfSegments; i++)
{
_meterTypeSegment.SetWidth(View.Frame.Width / (_meterTypeSegment.NumberOfSegments + 1), i);
}
_meterTypeSegment.ApportionsSegmentWidthsByContent = true;
}
_meterTypeSegment.Center = new CGPoint(View.Center.X, View.Frame.Size.Height - 40);
_meterTypeSegment.SelectedSegment = _defaultIndex;
_meterTypeSegment.ValueChanged += HandleSegmentChange;
View.AddSubview(_meterTypeSegment);
_selectionLabel = new UILabel(new CGRect(_meterTypeSegment.Frame.X, _meterTypeSegment.Frame.Y - 35, _meterTypeSegment.Frame.Width, 35));
_selectionLabel.TextColor = UIColor.White;
_selectionLabel.Text = _labelText;
View.AddSubview(_selectionLabel);
}
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
// Initializing the energy module.
frame = UIScreen.MainScreen.ApplicationFrame;
frame = new CGRect(frame.X,
frame.Y + NavigationController.NavigationBar.Frame.Size.Height,
frame.Width,
frame.Height - NavigationController.NavigationBar.Frame.Size.Height);
anylineEnergyView = new AnylineEnergyModuleView(frame);
error = null;
success = anylineEnergyView.SetupWithLicenseKey(licenseKey, this.Self, out error);
if (!success)
{
(alert = new UIAlertView("Error", error.DebugDescription, null, "OK", null)).Show();
}
//we'll stop scanning manually
anylineEnergyView.CancelOnResult = false;
// After setup is complete we add the module to the view of this view controller
View.AddSubview(anylineEnergyView);
anylineEnergyView.ScanMode = segmentItems.ElementAt(defaultIndex).Value;
//we don't need a segment control for only one option:
if (segmentItems.Count > 1)
{
meterTypeSegment = new UISegmentedControl(segmentItems.Keys.ToArray());
//adjust the segmentcontrol size so all elements fit to the view
if (meterTypeSegment.NumberOfSegments > 3)
{
for (int i = 0; i < meterTypeSegment.NumberOfSegments; i++)
{
meterTypeSegment.SetWidth(View.Frame.Width / (meterTypeSegment.NumberOfSegments + 1), i);
}
meterTypeSegment.ApportionsSegmentWidthsByContent = true;
}
meterTypeSegment.Center = new CGPoint(View.Center.X, View.Frame.Size.Height - 40);
meterTypeSegment.SelectedSegment = this.defaultIndex;
meterTypeSegment.ValueChanged += HandleSegmentChange;
View.AddSubview(meterTypeSegment);
selectionLabel = new UILabel(new CGRect(meterTypeSegment.Frame.X, meterTypeSegment.Frame.Y - 35, meterTypeSegment.Frame.Width, 35));
selectionLabel.TextColor = UIColor.White;
selectionLabel.Text = labelText;
View.AddSubview(selectionLabel);
infoLabel = new UILabel(new CGRect(0, View.Frame.Y + NavigationController.NavigationBar.Frame.Size.Height + 13, View.Frame.Width, 35));
infoLabel.TextColor = UIColor.White;
infoLabel.Text = "";
infoLabel.TextAlignment = UITextAlignment.Center;
View.AddSubview(infoLabel);
UpdateInfoLabel(anylineEnergyView.ScanMode);
}
}
