// Constructor
public MainPage()
{
InitializeComponent();
//Create a new instance of our scanner
scanner = new ZxingScanner();
}
public override void ViewDidLoad()
{
//Create a new instance of our scanner
scanner = new ZxingScanner();
//Setup our button
buttonDefaultScan = new UIButton(UIButtonType.RoundedRect);
buttonDefaultScan.Frame = new RectangleF(20, 80, 280, 40);
buttonDefaultScan.SetTitle("Scan with Default View", UIControlState.Normal);
buttonDefaultScan.TouchUpInside += (sender, e) =>
{
//Tell our scanner to use the default overlay
scanner.UseCustomOverlay = false;
//We can customize the top and bottom text of the default overlay
scanner.TopText = "Hold camera up to barcode to scan";
scanner.BottomText = "Barcode will automatically scan";
//Start scanning
scanner.StartScanning((result) =>
{
//Our scanning finished callback
HandleScanResult(result);
});
};
buttonCustomScan = new UIButton(UIButtonType.RoundedRect);
buttonCustomScan.Frame = new RectangleF(20, 20, 280, 40);
buttonCustomScan.SetTitle("Scan with Custom View", UIControlState.Normal);
buttonCustomScan.TouchUpInside += (sender, e) =>
{
//Create an instance of our custom overlay
customOverlay = new CustomOverlayView();
//Wireup the buttons from our custom overlay
customOverlay.ButtonTorch.TouchUpInside += delegate {
scanner.ToggleTorch();
};
customOverlay.ButtonCancel.TouchUpInside += delegate {
scanner.StopScanning();
};
//Tell our scanner to use our custom overlay
scanner.UseCustomOverlay = true;
scanner.CustomOverlay = customOverlay;
scanner.StartScanning((result) =>
{
//Our scanning finished callback
HandleScanResult(result);
});
};
this.View.AddSubview(buttonDefaultScan);
this.View.AddSubview(buttonCustomScan);
}
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
// Set our view from the "main" layout resource
SetContentView(Resource.Layout.Main);
//Create a new instance of our Scanner
scanner = new ZxingScanner(this);
buttonScanDefaultView = this.FindViewById <Button>(Resource.Id.buttonScanDefaultView);
buttonScanDefaultView.Click += delegate {
//Tell our scanner to use the default overlay
scanner.UseCustomOverlay = false;
//We can customize the top and bottom text of the default overlay
scanner.TopText = "Hold the camera up to the barcode\nAbout 6 inches away";
scanner.BottomText = "Wait for the barcode to automatically scan!";
//Start scanning
scanner.StartScanning((barcode) => {
//Scanning finished callback
HandleScanResult(barcode);
});
};
buttonScanCustomView = this.FindViewById <Button>(Resource.Id.buttonScanCustomView);
buttonScanCustomView.Click += delegate {
//Tell our scanner we want to use a custom overlay instead of the default
scanner.UseCustomOverlay = true;
//Inflate our custom overlay from a resource layout
var zxingOverlay = LayoutInflater.FromContext(this).Inflate(Resource.Layout.ZxingOverlay, null);
//Find the button from our resource layout and wire up the click event
var flashButton = zxingOverlay.FindViewById <Button>(Resource.Id.buttonZxingFlash);
flashButton.Click += (sender, e) => {
//Tell our scanner to toggle the torch/flash
scanner.ToggleTorch();
};
//Set our custom overlay
scanner.CustomOverlay = zxingOverlay;
//Start scanning!
scanner.StartScanning((barcode) => {
//Our scanning finished callback
HandleScanResult(barcode);
});
};
}
bool SetupCaptureSession()
{
// configure the capture session for low resolution, change this if your code
// can cope with more data or volume
session = new AVCaptureSession()
{
SessionPreset = AVCaptureSession.PresetMedium
};
// create a device input and attach it to the session
captureDevice = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Video);
var input = AVCaptureDeviceInput.FromDevice(captureDevice);
if (input == null)
{
// No input device
return(false);
}
session.AddInput(input);
// create a VideoDataOutput and add it to the sesion
var output = new AVCaptureVideoDataOutput()
{
VideoSettings = new AVVideoSettings(CVPixelFormatType.CV32BGRA)
};
// configure the output
queue = new DispatchQueue("myQueue");
scanner = new ZxingScanner(this);
output.SetSampleBufferDelegateAndQueue(scanner, queue);
session.AddOutput(output);
previewLayer = new AVCaptureVideoPreviewLayer(session);
previewLayer.Orientation = AVCaptureVideoOrientation.Portrait;
previewLayer.VideoGravity = "AVLayerVideoGravityResizeAspectFill";
session.StartRunning();
return(true);
}
bool SetupCaptureSession ()
{
// configure the capture session for low resolution, change this if your code
// can cope with more data or volume
session = new AVCaptureSession () {
SessionPreset = AVCaptureSession.PresetMedium
};
// create a device input and attach it to the session
captureDevice = AVCaptureDevice.DefaultDeviceWithMediaType (AVMediaType.Video);
var input = AVCaptureDeviceInput.FromDevice (captureDevice);
if (input == null){
// No input device
return false;
}
session.AddInput (input);
// create a VideoDataOutput and add it to the sesion
var output = new AVCaptureVideoDataOutput () {
VideoSettings = new AVVideoSettings (CVPixelFormatType.CV32BGRA)
};
// configure the output
queue = new DispatchQueue ("myQueue");
scanner = new ZxingScanner (this);
output.SetSampleBufferDelegateAndQueue (scanner, queue);
session.AddOutput (output);
previewLayer = new AVCaptureVideoPreviewLayer (session);
previewLayer.Orientation = AVCaptureVideoOrientation.Portrait;
previewLayer.VideoGravity = "AVLayerVideoGravityResizeAspectFill";
session.StartRunning ();
return true;
}
