关于ionic tabs bar隐藏问题

Question

请看我的代码：

http://codepen.io/FrostD/pen/QyyXaQ?editors=101

<html ng-app="ionicApp">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width">

    <title>Tabs Example</title>

    <link href="//code.ionicframework.com/nightly/css/ionic.css" rel="stylesheet">
    <script src="//code.ionicframework.com/nightly/js/ionic.bundle.js"></script>
  </head>

  <body>

    <ion-nav-bar class="bar-positive">
      <ion-nav-back-button>
      </ion-nav-back-button>
    </ion-nav-bar>

    <ion-nav-view></ion-nav-view>


    <script id="templates/tabs.html" type="text/ng-template">
      <ion-tabs class="tabs-icon-top tabs-positive" ng-class="{'tabs-item-hide': $root.hideTabs}">

        <ion-tab title="Home" icon="ion-home" href="#/tab/home">
          <ion-nav-view name="home-tab"></ion-nav-view>
        </ion-tab>

        <ion-tab title="About" icon="ion-ios-information" href="#/tab/about">
          <ion-nav-view name="about-tab"></ion-nav-view>
        </ion-tab>

        <ion-tab title="Contact" icon="ion-ios-world" ui-sref="tabs.contact">
          <ion-nav-view name="contact-tab"></ion-nav-view>
        </ion-tab>

      </ion-tabs>
    </script>

    <script id="templates/home.html" type="text/ng-template">
      <ion-view view-title="Home">
        <ion-content class="padding">
          <p>
            <a class="button icon icon-right ion-chevron-right" href="#/tab/facts">Scientific Facts</a>
          </p>
        </ion-content>
      </ion-view>
    </script>

    <script id="templates/facts.html" type="text/ng-template">
      <ion-view cache-view="false" id="store-visit-wrapper" hide-tabs="true">
        <ion-content class="padding">
          <p>This page should not show the tab-bar at the bottom</p>
          <p>Banging your head against a wall uses 150 calories an hour.</p>
          <p>Dogs have four toes on their hind feet, and five on their front feet.</p>
          <p>The ant can lift 50 times its own weight, can pull 30 times its own weight and always falls over on its right side when intoxicated.</p>
          <p>A cockroach will live nine days without it's head, before it starves to death.</p>
          <p>Polar bears are left handed.</p>
          <p>
            <a class="button icon ion-home" href="#/tab/home"> Home</a>
            <a class="button icon icon-right ion-chevron-right" href="#/tab/facts2">More Facts</a>
          </p>
        </ion-content>
      </ion-view>
    </script>

    <script id="templates/facts2.html" type="text/ng-template">
      <ion-view view-title="Also Factual" hide-tabs="true">
        <ion-content class="padding">
          <p>111,111,111 x 111,111,111 = 12,345,678,987,654,321</p>
          <p>1 in every 4 Americans has appeared on T.V.</p>
          <p>11% of the world is left-handed.</p>
          <p>1 in 8 Americans has worked at a McDonalds restaurant.</p>
          <p>3,200 is the absolute highest amount of money you can win on Jeopardy.</p>
          <p>101 Dalmatians, Peter Pan, Lady and the Tramp, and Mulan are the only Disney cartoons where both parents are present and don't die throughout the movie.</p>
          <p>
            <a class="button icon ion-home" href="#/tab/home"> Home</a>
            <a class="button icon ion-chevron-left" href="#/tab/facts"> Scientific Facts</a>
          </p>
        </ion-content>
      </ion-view>
    </script>

    <script id="templates/about.html" type="text/ng-template">
      <ion-view view-title="About">
        <ion-content class="padding">
          <h3>Create hybrid mobile apps with the web technologies you love.</h3>
          <p>Free and open source, Ionic offers a library of mobile-optimized HTML, CSS and JS components for building highly interactive apps.</p>
          <p>Built with Sass and optimized for AngularJS.</p>
          <p>
            <a class="button icon icon-right ion-chevron-right" href="#/tab/navstack">Tabs Nav Stack</a>
          </p>
        </ion-content>
      </ion-view>
    </script>

    <script id="templates/nav-stack.html" type="text/ng-template">
      <ion-view view-title="Tab Nav Stack">
        <ion-content class="padding">
          <p><img src="http://ionicframework.com/img/diagrams/tabs-nav-stack.png" style="width:100%"></p>
        </ion-content>
      </ion-view>
    </script>

    <script id="templates/contact.html" type="text/ng-template">
      <ion-view title="Contact">
        <ion-content>
          <div class="list">
            <div class="item">
              @IonicFramework
            </div>
            <div class="item">
              @DriftyTeam
            </div>
          </div>
        </ion-content>
      </ion-view>
    </script>

  </body>
</html>


angular.module('ionicApp', ['ionic'])

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

  $stateProvider
    .state('tabs', {
      url: "/tab",
      abstract: true,
      templateUrl: "templates/tabs.html"
    })
    .state('tabs.home', {
      url: "/home",
      views: {
        'home-tab': {
          templateUrl: "templates/home.html",
          controller: 'HomeTabCtrl'
        }
      }
    })
    .state('tabs.facts', {
      url: "/facts",
      views: {
        'home-tab': {
          templateUrl: "templates/facts.html"
        }
      }
    })
    .state('tabs.facts2', {
      url: "/facts2",
      views: {
        'home-tab': {
          templateUrl: "templates/facts2.html"
        }
      }
    })
    .state('tabs.about', {
      url: "/about",
      views: {
        'about-tab': {
          templateUrl: "templates/about.html"
        }
      }
    })
    .state('tabs.navstack', {
      url: "/navstack",
      views: {
        'about-tab': {
          templateUrl: "templates/nav-stack.html"
        }
      }
    })
    .state('tabs.contact', {
      url: "/contact",
      views: {
        'contact-tab': {
          templateUrl: "templates/contact.html"
        }
      }
    });


   $urlRouterProvider.otherwise("/tab/home");

})

.controller('HomeTabCtrl', function($scope) {
  console.log('HomeTabCtrl');
})

.directive('hideTabs', function($rootScope) {
  return {
      restrict: 'A',
      link: function (scope, element, attributes) {
                scope.$watch(attributes.hideTabs, function(value){
                    console.log('$watch value=' + value);
                    $rootScope.hideTabs = value;
                });
                scope.$on('$ionicView.beforeLeave', function () {
                    console.log('$ionicView.beforeLeave');
                    $rootScope.hideTabs = false;
                });
            }
  };
});

在主页选项卡中，单击科学事实按钮并转到下一页，选项卡栏被隐藏，效果很好。接下来，单击 More Facts 按钮转到下一页，但选项卡栏未隐藏。我不知道为什么，$rootScope.hideTabs 是真的，但标签栏仍然在这里。

谢谢。

Answer 1

移除指令 "hideTabs"

.directive('hideTabs', function($rootScope) {
    ......
});

并添加以下简单代码，效果很好。

.run(function($rootScope, $location, $ionicPlatform) {
    $ionicPlatform.ready(function() {    
        $rootScope.$on("$locationChangeStart", function(event, next, current)     {
            if ($location.url() == '/tab/facts2' || $location.url() == '/tab/facts') {               
                $rootScope.hideTabs = true;
            }else{
                $rootScope.hideTabs = false;
            }  
        });
    });
})

关于ionic tabs bar隐藏问题

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