Call tibar and titanium-barcode (barcode scanner modules for iOS & Android) in a consistent manner across multiple OS. https://github.com/joseitinerarium/titanium-barcode https://github.com/joseitinerarium/tibar

android-barcode.js

function scanCode(successFunction, errorFunction){
  var titaniumBarcode = require('com.mwaysolutions.barcode');

	titaniumBarcode.scan({
		success:function(data) {
			if(data && data.barcode) {
				successFunction(data.barcode);
			} else {
				Ti.API.info("Error scanning barcode: " + data);
			}
		},

		error:function(err) { 
			errorFunction(err);
		},

		cancel:function() { 
			Ti.API.info("ScanBarcode Canceled");
	});
}

exports.scanCode = scanCode;

ios-barcode.js

function scanCode(successFunction, errorFunction){
  var TiBar = require('tibar');
	TiBar.scan({
        // simple configuration for iPhone simulator
        configure: {
            classType: "ZBarReaderViewController",
            sourceType: "Camera",
            cameraMode: "Default",
            symbol:{
                "QR-Code":true,
            }
        },
        success:function(data){
            Ti.API.info('TiBar success callback!');
            if(data && data.barcode){
                successFunction(data.barcode);
            }
        },
        cancel:function(){
            Ti.API.info('TiBar cancel callback!');
        },
        error:function(){
           errorFunction();
        }
    }); 
}

exports.scanCode = scanCode;