角UI路由器加载视图两倍 [英] Angular ui-router loading view twice

问题描述

我用我的角角的应用程序UI的路由器。对于路由部分，我已经写了

I'm using angular ui-router in my angular application. For the routing part I've written

var routerApp = angular.module('routerApp', ['ui.router']);

routerApp.config(function($stateProvider, $urlRouterProvider) {

$urlRouterProvider.otherwise('/home');

$stateProvider

    // HOME STATES AND NESTED VIEWS ========================================
    .state('home', {
        url: '/home',
        templateUrl: 'partial-home.html',
           controller : function($scope,$state){
            $scope.$on('$viewContentLoaded', function(){
              console.log("home content loaded",$state.current);
            })
          }
    })

    // nested list with custom controller
    .state('home.list', {
        url: '/list',
        template: 'I am using a list.'
    })

    // nested list with just some random string data
    .state('home.paragraph', {
        url: '/paragraph',
        template: 'I could sure use a drink right now.'
    }) 

});

在局部home.html做为我wriiten： -

In partial-home.html I've wriiten:-

<div class="jumbotron text-center">
  <h1>The Homey Page</h1>
  <p>This page demonstrates <span class="text-danger">nested</span> views.</p>

  <a ui-sref=".list" class="btn btn-primary">List</a>
  <a ui-sref=".paragraph" class="btn btn-danger">Paragraph</a>

</div>

<div ui-view></div>

现在，当我执行这个程序在浏览器中，如果我开的路线

Now when I'm executing this app in browser, if I open the the route

/home

浏览器控制台显示出家庭内容加载一次，然后如果我点击列表中的链接，地址栏变为

The browser console is showing "home content loaded" once, and then if I click on the list link, the addressbar changes to

/home/list

然后还控制台显示一次。

And then also the console is shown once.

但是，如果我刷新浏览器选项卡在那个时候（当路线是家庭/列表），控制台显示的两倍。请帮我，为什么这件事情发生了。

But if I refresh the browser tab at that time (when the route is home/list), the console is shown twice. Please help me why this thing happening.

推荐答案

由于home.list一种家的孩子的状态，当你重新加载页面home.list
它首先初始化视图家居控制器比查看列表控制器，所以$ viewContentLoaded被调用两次

because home.list is a child state of home and when you reload page for home.list it first initializes view of home controller than view of list controller so $viewContentLoaded is called twice

我猜你使用这会导致孩子和家长共享相同的范围家里模板中的UI视图。 u的聆听双方的孩子和家长的范围事件。所以很自然地被调用两次

i guess that you use ui-view inside home template which causes child and parent to share the same scope. u are listening to both child's and parent's scope for the event. so it is natural to be called twice

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