We will have 2 cases

If the exist user the screen is will home screen

If is not exist user the screen will login screen

How we can check user is existing?

When we sign up a user. We will set user object to localstorage.

Example:

user_object = {
              email: "example@gmail.com",
              name: "mymai",
              token: "aksoenziekd14mxd"
            }

localStorage.setItem("user", user_object)

Currently, The user exist in the app. We have to check the case to display screen

Detect the case

We will the localstorage, if it contain the user it won’t redirect to login screen but will redirect to home screen

At the app.js file in config block we will check exist user or not

  if (window.localStorage['user']) {
    $urlRouterProvider.otherwise('/app/home');
  } else {
    $urlRouterProvider.otherwise('/app/login');
  }

Detail code below

// Ionic stater

angular.module('stater', [
  'ionic',
  'ngCordova',
  'login.module',
  'home.module'
])

.run(function($ionicPlatform, $ionicNavBarDelegate, $state) {
  $ionicPlatform.ready(function() {
    // Hide the accessory bar by default (remove this to show the accessory bar above the keyboard
    // for form inputs)
    if (window.cordova && window.cordova.plugins.Keyboard) {
      cordova.plugins.Keyboard.hideKeyboardAccessoryBar(true);
      cordova.plugins.Keyboard.disableScroll(true);
    }
    if (window.StatusBar) {
      // org.apache.cordova.statusbar required
      StatusBar.styleDefault();
    }
  });
})
.config(function($stateProvider,
  $urlRouterProvider,
  RestangularProvider,
  $httpProvider,
  $compileProvider
) {

  $stateProvider
  .state('app', {
    url: '/app',
    abstract: true,
    templateUrl: 'templates/menu.html',
    controller: 'AppCtrl'
  });

  if (window.localStorage['user']) {
    RestangularProvider.setDefaultHeaders({Authorization: JSON.parse(localStorage.token).token});
    $urlRouterProvider.otherwise('/app/home');
  } else {
    $urlRouterProvider.otherwise('/app/login');
  }
});

Done