[TIMOB-27804] Front camera and cancel button option missing while open camera using ti.barcode module

   function ShowTiBarcodeScanner(controltoUse, lFrom, GetScannedCode, OnCancel)
   {
       var sFailPoint = "top";
       var bCalled = false;
       var bShowAlertAfterSuccessfulScan = false;
       var bScanSuccess = false;
   	try
   	{
   		if(!Ti.Media.hasCameraPermissions())
   		{
   			alert(L('msg_no_camera_permission'));
   			return false;
   		}
   		var Barcode = require('ti.barcode');
   		Barcode.allowRotation = true;
   		Barcode.displayedMessage = ' ';
   		Barcode.allowMenu = true;
   		Barcode.allowInstructions = false;
   		Barcode.useLED = true;
   		
   	
   		var overlay = Ti.UI.createView({
   		    backgroundColor: 'transparent',
   		    top: 0, right: 0, bottom: 0, left: 0
   		});
   		var switchButton = Ti.UI.createButton({
   		    title: Barcode.useFrontCamera ? L('title_backcamera','Back Camera') : L('title_frontcamera','Front Camera'),
   		    textAlign: 'center',
   		    color: '#000', backgroundColor: '#fff', style: 0,
   		    font: { fontWeight: 'bold', fontSize: 16 },
   		    borderColor: '#000', borderRadius: 10, borderWidth: 1,
   		    opacity: 0.5,
   		    width: 220, height: 30,
   		    bottom: 10, left:20
   		});
   		switchButton.addEventListener('click', function () {
   		    Barcode.useFrontCamera = !Barcode.useFrontCamera;
   		    switchButton.title = Barcode.useFrontCamera ? L('title_backcamera','Back Camera') : L('title_frontcamera','Front Camera');
   		});
   		overlay.add(switchButton);
   		var cancelButton = Ti.UI.createButton({
   		    title: L('Cancel_title','Cancel'), textAlign: 'center',
   		    color: '#000', backgroundColor: '#fff', style: 0,
   		    font: { fontWeight: 'bold', fontSize: 16 },
   		    borderColor: '#000', borderRadius: 10, borderWidth: 1,
   		    opacity: 0.5,
   		    width: 220, height: 30,
   		    bottom: 10, right:20
   		});
   		cancelButton.addEventListener('click', function () {
   		    Barcode.cancel();
   		});
   		overlay.add(cancelButton);
   		
   		/**
   		 * Create a button that will trigger the barcode scanner.
   		 */
   		var scanCode = Ti.UI.createButton({
   		    title: 'Scan Code',
   		    width: 150,
   		    height: 60,
   		    top: 20
   		});
   		
           var ScanSuccess = function(e) {
   	            bScanSuccess = false;
                   bCalled = true;
                   bScanSuccess = true;
                  cancelButton.fireEvent("click");
   			};
   
   		Barcode.addEventListener('error', function (e) {
   		   alert(L('msg_fail_to_scan') + ":" +  e.message);
   		});
          Barcode.addEventListener('cancel', function (e) {
               try
               {
   	            Ti.API.info('Cancel received');
   	            if (bScanSuccess == false)
   	            {
   	        		OnCancel();            	
   	            }
               }
               catch(ex)
               {
                   
               }
           });
   		Barcode.addEventListener('success', function (e) {
   			ScanSuccess({barcode:e.result});
   		    Ti.API.info('Success called with barcode: ' + e.result);
   		});
   		
   		setTimeout(function()
   			{// Note: while the simulator will NOT show a camera stream in the simulator, you may still call "Barcode.capture"
   		    // to test your barcode scanning overlay.
   		    Barcode.capture({
   		        animate: false,
   		        overlay: overlay,
   		        showCancel: false,
   		        showRectangle: true,
   		        keepOpen: true,
   		        acceptedFormats: [
   		            Barcode.FORMAT_QR_CODE, Barcode.FORMAT_CODE_39
   		        ]
   		    });},5);
   		
   	}
   	catch(ex)
   	{
   		Ti.API.info("error occured in ShowTiBarcodeScanner:" + ex.message);
   	}
   }