angularjs - angular + ui-router : event.preventDefault(); prevent all the app states from working -

i want evaluate user when app start if it's authenticated change state "categories" if not go "land" state. reached using $statechangestart in run block :

.run(function($ionicplatform, dscachefactory, $rootscope, $auth, $state) {     $ionicplatform.ready(function() {         // hide accessory bar default (remove show accessory bar above keyboard         // form inputs)         if (window.cordova && window.cordova.plugins.keyboard) {             cordova.plugins.keyboard.hidekeyboardaccessorybar(true);         }         if (window.statusbar) {             // org.apache.cordova.statusbar required             statusbar.styledefault();         }      });     $rootscope.$on('$statechangestart', function (event, tostate) {             if (!$auth.isauthenticated() && tostate.name !== 'land') {                 event.preventdefault();                  $state.go('land');             }         }); }) 

and if it's authenticated:

$urlrouterprovider.otherwise('app/categories'); 

every thing works fine user evaluated correctly but, clicking on in app taking me land state. idea why! router code :

.config(function($stateprovider, $urlrouterprovider, $authprovider, $ionicappprovider, api_url) {     $stateprovider      .state('app', {         url: "/app",         abstract: true,         templateurl: "templates/menu.html",         controller: 'appctrl'     })      .state('land', {         url: '/land',         templateurl: 'templates/land.html',         controller: 'landctrl'     })  .state('signup', {         url: '/sign-up',         templateurl: 'templates/sign-up.html',         controller: 'signupctrl'     })      .state('signin', {         url: '/sign-in',         templateurl: 'templates/sign-in.html',         controller: 'signinctrl'     })      .state('app.categories', {         url: '/categories',         views: {             'menucontent': {                 templateurl: 'templates/categories.html',                 controller: 'categoriesctrl',             }         }     });