App Stopped Working during barcode scanning

[itsrnd]

Hello,

I have written following code. After installation it gives me alert "In function". but whenever it reaches to "$cordovaBarcodeScanner.scan().then(function(imageData)" it shows "unfortunately app stopped working".It works on many android versions. but it gives error on 4.4. Any body have solution? please provide. Thank You.

exampleApp.controller("ExampleController",function($scope,$cordovaBarcodeScanner){
$scope.scanBarcode = function(){
alert("In function");
$cordovaBarcodeScanner.scan().then(function(imageData){
alert("In function1");
//alert("Format = "+imageData.format);
document.getElementById('customer_bar_id').value = imageData.text;
alert("In function2");
$('#customer_bar_id').show();
alert("In function");
$('#customer_bar_search').show();
},function(error){
alert("An error happened = "+error);
});
}
});