$cordovaDialogs使用时遇到的问题

１：按照http://ngcordova.com/docs/plugins/dialogs/文档介绍进行安装使用：

 //标题栏
.controller('TitleCtrl', function($scope,$cordovaDialogs,$ionicHistory){
     $scope.wzhGoBack = function(){
           $ionicHistory.goBack();
     };

     $scope.wzhCloseApp = function(){
         $cordovaDialogs.confirm('您确定要退出系统?', '友情提示', ['确定','取消'])
             .then(function(buttonIndex) {
                 // no button = 0, 'OK' = 1, 'Cancel' = 2
                 if (buttonIndex == 1) {
                     ionic.Platform.exitApp();
                 }
             });
         $cordovaDialogs.beep(3);
     };
})

运行在手机上只显示了标题栏，下面的界面没有了，通过运行ionic serve在网页上报错信息如下：

ionic.bundle.js:21157 Error: [$injector:unpr] Unknown provider: $cordovaDialogsProvider <- $cordovaDialogs <- TitleCtrl
http://errors.angularjs.org/1.4.3/$injector/unpr?p0=%24cordovaDialogsProvider%20%3C-%20%24cordovaDialogs%20%3C-%20TitleCtrl
    at ionic.bundle.js:8895
    at ionic.bundle.js:13089
    at Object.getService [as get] (ionic.bundle.js:13236)
    at ionic.bundle.js:13094
    at getService (ionic.bundle.js:13236)
    at Object.invoke (ionic.bundle.js:13268)
    at extend.instance (ionic.bundle.js:17826)
    at nodeLinkFn (ionic.bundle.js:16936)
    at compositeLinkFn (ionic.bundle.js:16368)
    at nodeLinkFn (ionic.bundle.js:16972)

２：需要安装ngCordova

参照：http://ngcordova.com/docs/install/

（１）index.html

    <script src="lib/ngCordova/dist/ng-cordova.min.js"></script>
    <script src="cordova.js"></script>

（２）app.js

angular.module('starter',
    [
      'ionic',
      'starter.controllers',
      'starter.services',
      'ngCordova'
    ]
)