File download problem in ionic

cordova
1

Hi guys,
I am new in ionic. I am trying to download a file form AWS, but unable to download it.
Could you please guide me on this topic.

Below is my HTML code

Native App 
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js"></script>
<script src="lib/ngCordova/dist/ng-cordova.js"></script>
<!-- compiled css output -->
<link href="css/ionic.app.css" rel="stylesheet">
<script src="lib/ionic/js/ionic.bundle.js"></script>
<script src="lib/ngCordova/dist/ng-cordova.min.js"></script>
<script src="cordova.js"></script>
<script src="js/app.js"></script>

Learn

<ion-content class="test">
    <p class="heading"> embibe</p> 
</ion-content>
<ion-footer-bar align-title="center" class="bar-positive">
  <div class="buttons" data-ng-click="refresh()">
    <button class="button">back</button>
  </div>
  <h1 class="title">Home</h1>
  <div class="buttons" data-ng-click="refresh()">
    <button class="button">forward</button>
  </div>
</ion-footer-bar>

Below is my app.js code

var App= angular.module(‘NativeApp’, [‘ionic’,‘ngCordova’, ‘ngCordova.plugins.file’]);
App.controller(“NativeAppCtrl”,NativeAppCtrl);
NativeAppCtrl.$inject=[’$scope’,’$http’, ‘$cordovaFile’, ‘$rootScope’, ‘$cordovaNetwork’,’$ionicPlatform’];

function NativeAppCtrl($scope, $http, $cordovaFile, $rootScope, $cordovaNetwork, $ionicPlatform){
$ionicPlatform.ready(function($http) {

alert(cordova.file.dataDirectory );
$scope.refresh=function(){  
  
  var isOnline = $cordovaNetwork.isOnline();
  //alert(isOnline);
  if(isOnline){
    var url = "https://embibe-cdn.s3.amazonaws.com/resources/images/ci/image02-436a1a74-f2ee-4537-b176-827aaa218ca8.png";
    var targetPath = cordova.file.dataDirectory + "testImage.png";
    var trustHosts = true
    var options = {};
    alert(targetPath);
    $cordovaFileTransfer.download(url, targetPath, options, trustHosts)
      .then(function(result) {
        alert("success!");
      }, function(err) {
        alert("error!");
      }, function (progress) {
        $timeout(function () {
          $scope.downloadProgress = (progress.loaded / progress.total) * 100;
        })
      });

  }
  else{
    alert("lost network!");
  }
}

});
}