我有以下代码
<!DOCTYPE html>
<html lang="en" ng-app="MyApp">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Test</title>
<link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/angular_material/0.8.3/angular-material.min.css">
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=RobotoDraft:300,400,500,700,400italic">
<!-- Base url for all relative links -->
<base href="/test/" />
<link rel="stylesheet" href="css/app.css" type="text/css" />
</head>
<body>
<div layout="column" flex ng-controller="MainController">
<md-toolbar layout="row">
<button ng-click="toggleSidenav('sidenav')" class="menuBtn">
<span class="visually-hidden">Menu</span>
</button>
<h1 class="md-toolbar-tools" layout-align-gt-sm="center">Hello, World</h1>
</md-toolbar>
<!-- Sidebar -->
<div layout="row" flex>
<md-sidenav layout="column" class="md-sidenav-left md-whiteframe-z2" md-component-id="sidenav">
<div id="content">
<md-content layout-padding flex class="md-padding">
... some content here ...
</md-content>
</div>
</md-sidenav>
</div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<script src="js/angular.min.js" type="text/javascript"></script>
<script src="//code.angularjs.org/1.3.15/angular-messages.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular-animate.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular-aria.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angular_material/0.8.3/angular-material.min.js"></script>
<script src="js/app.js" type="text/javascript"></script>
</body>
</html>
(function () {
'use strict';
var app = angular.module('MyApp', ['ngMaterial','ngMessages']);
app.controller('MainController', ['$scope', '$mdSidenav', function($scope, $mdSidenav){
$scope.toggleSidenav = function(menuId) {
$mdSidenav(menuId).toggle();
};
}]);
})();
问题在于移动设备仅（在PC上运行良好）每当我展开侧边栏时它会自动关闭。我哪里错了？