Added.

.vscode/settings.json

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+{
+    "editor.quickSuggestions": false
+}

src/android/ios/QRScanner.swift

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+import Foundation	
+import AVFoundation
+
+	@author DineshKokare
+
+	@objc(QRScannerPlugin) class QRScannerPlugin : CDVPlugin,AVCaptureMetadataOutputObjectsDelegate {
+
+	class CameraView: UIView {
+	var videoPreviewLayer:AVCaptureVideoPreviewLayer?
+
+	//Interface Method.:
+	func interfaceOrientationToVideoOrientation(_ orientation : UIInterfaceOrientation) -> AVCaptureVideoOrientation {
+	switch (orientation) {
+	case UIInterfaceOrientation.portrait:
+	return AVCaptureVideoOrientation.portrait;
+	case UIInterfaceOrientation.portraitUpsideDown:
+	return AVCaptureVideoOrientation.portraitUpsideDown;
+	case UIInterfaceOrientation.landscapeLeft:
+	return AVCaptureVideoOrientation.landscapeLeft;
+	case UIInterfaceOrientation.landscapeRight:
+	return AVCaptureVideoOrientation.landscapeRight;
+	default:
+	return AVCaptureVideoOrientation.portraitUpsideDown;
+	}
+	}
+
+	override func layoutSubviews() {
+	super.layoutSubviews();
+	if let sublayers = self.layer.sublayers {
+	for layer in sublayers {
+	layer.frame = self.bounds;
+	}
+	}
+
+	self.videoPreviewLayer?.connection?.videoOrientation = interfaceOrientationToVideoOrientation(UIApplication.shared.statusBarOrientation);
+	}
+
+	func addPreviewLayer(_ previewLayer:AVCaptureVideoPreviewLayer?) {
+	previewLayer!.videoGravity = AVLayerVideoGravity.resizeAspectFill
+	previewLayer!.frame = self.bounds
+	self.layer.addSublayer(previewLayer!)
+	self.videoPreviewLayer = previewLayer;
+	}
+
+	func removePreviewLayer() {
+	if self.videoPreviewLayer != nil {
+	self.videoPreviewLayer!.removeFromSuperlayer()
+	self.videoPreviewLayer = nil
+	}
+	}
+	}
+
+	var cameraView: CameraView!
+	var captureSession:AVCaptureSession?
+	var captureVideoPreviewLayer:AVCaptureVideoPreviewLayer?
+	var metaOutput: AVCaptureMetadataOutput?
+
+	var currentCamera: Int = 0;
+	var frontCamera: AVCaptureDevice?
+	var backCamera: AVCaptureDevice?
+
+	var scanning: Bool = false
+	var paused: Bool = false
+	var nextScanningCommand: CDVInvokedUrlCommand?
+
+	enum QRScannerError: Int32 {
+	case unexpected_error = 0,
+	camera_access_denied = 1,
+	camera_access_restricted = 2,
+	back_camera_unavailable = 3,
+	front_camera_unavailable = 4,
+	camera_unavailable = 5,
+	scan_canceled = 6,
+	light_unavailable = 7,
+	open_settings_unavailable = 8
+	}
+
+	enum CaptureError: Error {
+	case backCameraUnavailable
+	case frontCameraUnavailable
+	case couldNotCaptureInput(error: NSError)
+	}
+
+	enum LightError: Error {
+	case torchUnavailable
+	}
+
+	override func pluginInitialize() {
+	super.pluginInitialize()
+	NotificationCenter.default.addObserver(self, selector: #selector(pageDidLoad), name: NSNotification.Name.CDVPageDidLoad, object: nil)
+	self.cameraView = CameraView(frame: CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height))
+	self.cameraView.autoresizingMask = [.flexibleWidth, .flexibleHeight];
+	}
+
+	func sendErrorCode(command: CDVInvokedUrlCommand, error: QRScannerError){
+	let pluginResult = CDVPluginResult(status: CDVCommandStatus_ERROR, messageAs: error.rawValue)
+	commandDelegate!.send(pluginResult, callbackId:command.callbackId)
+	}
+
+	// utility method
+	@objc func backgroundThread(delay: Double = 0.0, background: (() -> Void)? = nil, completion: (() -> Void)? = nil) {
+	if #available(iOS 8.0, *) {
+	DispatchQueue.global(qos: DispatchQoS.QoSClass.userInitiated).async {
+	if (background != nil) {
+	background!()
+	}
+	DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + delay * Double(NSEC_PER_SEC)) {
+	if(completion != nil){
+	completion!()
+	}
+	}
+	}
+	} else {
+	// Fallback for iOS < 8.0
+	if(background != nil){
+	background!()
+	}
+	if(completion != nil){
+	completion!()
+	}
+	}
+	}
+
+
+	@objc(qrScanner:)
+	func qrScanner (_ command: CDVInvokedUrlCommand,_ commond: startScanner,_ commond: stopScanner){
+	let pluginResult = CDVPluginResult(status: CDVCommandStatus_OK, messageAs: "")
+	commandDelegate!.send(pluginResult, callbackId:command.callbackId)
+
+	}
+	//Check method for startscanner and stopscanner.
+	func  boolean execute(Action:String, JSONArray:[args]) -> bool{
+	if (action.equals(ACTION_QR_SCANNER)){
+	String type = args.String(0)
+	switch (type) {
+
+	case START_SCANNING:
+	startScanner();
+	break;
+
+	case STOP_SCANNING:
+	stopScanner();
+
+	break;
+
+	}
+	}
+	return true
+
+	}
+
+	// startScanner Method.
+	@objc(startScanner:)
+
+	func startScanner(_ command: CDVInvokedUrlCommand) {
+	var pluginResult:CDVPluginResult = CDVPluginResult.init(status: CDVCommandStatus_ERROR)
+	let startScanner = command.arguments[0] as? String ?? ""
+	let screenTitle = command.arguments[1] as? String ?? "Scan QR Code."
+	let displayText = command.arguments[2] as? String ?? "Point your phone to the QR code to scan it"
+	let displayTextColor = command.arguments[3] as? String ?? "0b0b0b"
+	let buttonText = command.arguments[4] as? String ?? "I don't have a QR Code"
+	let showButton = command.arguments[5] as? Bool ?? false
+	let isRtl = command.arguments[6] as? Bool ?? false
+
+	print("Start Scanning Successfully.")
+	pluginResult = CDVPluginResult.init(status: CDVCommandStatus_OK, messageAs: "Start Scanning Successfully.")
+	self.commandDelegate.send(pluginResult, callbackId: command.callbackId)
+
+	}
+
+	}
+
+	// stopScanner Method.
+	@objc(stopScanner:)
+	func stopScanner(_ command: CDVInvokedUrlCommand) {
+
+	print("Stop Scanning Successfully.")
+
+	let pluginResult:CDVPluginResult = CDVPluginResult.init(status: CDVCommandStatus_OK, messageAs: "Stop Scanning Successfully.")
+	self.commandDelegate.send(pluginResult, callbackId: command.callbackId)
+
+	}
+