The issue with ion-content

when i open a url in webview,the ion-content don’t appearance;

<ion-header-bar align-title="center" class="bar bar-header  awdc-bar-positive">
<h1 class="title">报名参会</h1>
</ion-header-bar>
<ion-content ng-controller="MyController">
</ion-content>,

the script:

angular.module('ionicApp', ['ionic'])
.controller('MyController', function($scope,$ionicModal,$ionicPopup,$ionicLoading) {
})

when i delete the above script,the ion-content show,why??

But…don’t you have any content inside your ion-content ?