我做了一個小實驗:http://codepen.io/hawkphil/pen/NqMomm?editors=101
這裏是我的狀態流量(點擊按鈕):Home -> Fact1 -> Fact2 -> Fact3 -> Fact2
在每個狀態變化,我我在console.log
中顯示爲$ionicHistory.backView
但是,您可以在pen.js:64
行中看到奇怪的事情發生。 $ionicHistory.backView
「認爲」我從後退按鈕到app.fact2
,並且它顯示app.fact1
作爲之前的狀態(行pen.js:53
)。這是不正確的,對吧?它應該顯示app.fact3
作爲之前的狀態,因爲我通過單擊按鈕進入app.fact2
狀態MANUALLY。我還展示了$timeout
(行pen.js:59
)的值,以防萬一。但它仍然不正確。
pen.js:56 stateChangeSuccess
pen.js:64 State change from: tabs.home to: tabs.fact1
pen.js:52 $scope.$watch $ionicHistory.backView change detect. newVal:
pen.js:53 tabs.home
pen.js:58 $timeout after 2 sec $ionicHistory.backView().stateName
pen.js:59 tabs.home
pen.js:56 stateChangeSuccess
pen.js:64 State change from: tabs.fact1 to: tabs.fact2
pen.js:52 $scope.$watch $ionicHistory.backView change detect. newVal:
pen.js:53 tabs.fact1
pen.js:58 $timeout after 2 sec $ionicHistory.backView().stateName
pen.js:59 tabs.fact1
pen.js:56 stateChangeSuccess
pen.js:64 State change from: tabs.fact2 to: tabs.fact3
pen.js:52 $scope.$watch $ionicHistory.backView change detect. newVal:
pen.js:53 tabs.fact2
pen.js:58 $timeout after 2 sec $ionicHistory.backView().stateName
pen.js:59 tabs.fact2
pen.js:56 stateChangeSuccess
pen.js:64 State change from: tabs.fact3 to: tabs.fact2
pen.js:52 $scope.$watch $ionicHistory.backView change detect. newVal:
pen.js:53 tabs.fact1
pen.js:58 $timeout after 2 sec $ionicHistory.backView().stateName
pen.js:59 tabs.fact1
問題
如何解決此問題?也許重寫這個委託或以某種方式覆蓋它?
是否有解決方法?因爲我依靠正確的以前的狀態爲了顯示/隱藏的東西。
JS
angular.module('ionicApp', ['ionic'])
.config(function($stateProvider, $urlRouterProvider) {
$stateProvider
.state('tabs', {
url: "/tab",
abstract: true,
templateUrl: "templates/tabs.html",
controller: "MainCtrl"
})
.state('tabs.home', {
url: "/home",
views: {
'home-tab': {
templateUrl: "templates/home.html",
controller: 'HomeTabCtrl'
}
}
})
.state('tabs.fact1', {
url: "/fact1",
views: {
'home-tab': {
templateUrl: "templates/fact1.html",
controller: 'Fact1TabCtrl'
}
}
})
.state('tabs.fact2', {
url: "/fact2",
views: {
'home-tab': {
templateUrl: "templates/fact2.html",
controller: 'Fact2TabCtrl'
}
}
})
.state('tabs.fact3', {
url: "/fact3",
views: {
'home-tab': {
templateUrl: "templates/fact3.html",
controller: 'Fact3TabCtrl'
}
}
})
.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"
}
}
});
$urlRouterProvider.otherwise("/tab/home");
})
.controller('MainCtrl', function($scope, $rootScope, $timeout, $ionicHistory) {
$scope.$watch(function() {
return $ionicHistory.backView() ? $ionicHistory.backView().stateName : null;
}, function (newVal, oldVal) {
console.log('$scope.$watch $ionicHistory.backView change detect. newVal:');
console.log(newVal);
});
$rootScope.$on('$stateChangeSuccess', function(event, toState, toParams, fromState, fromParams){
console.log('stateChangeSuccess');
$timeout(function(){
console.log('$timeout after 2 sec $ionicHistory.backView().stateName');
console.log($ionicHistory.backView().stateName);
}, 2000);
});
})
.controller('HomeTabCtrl', function($scope, $rootScope) {
// console.log('Home');
$rootScope.$on('$stateChangeSuccess', function(event, toState, toParams, fromState, fromParams){
console.log('State change from: ' + fromState.name + ' to: ' + toState.name);
});
})
.controller('Fact1TabCtrl', function($scope) {
// console.log('Fact1');
})
.controller('Fact2TabCtrl', function($scope) {
// console.log('Fact2');
})
.controller('Fact3TabCtrl', function($scope) {
// console.log('Fact3');
});
HTML
<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>Navigation 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 class="button-icon ion-arrow-left-c">
</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">
<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-football" href="#/tab/about">
<ion-nav-view name="about-tab"></ion-nav-view>
</ion-tab>
</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 ion-home" href="#/tab/home"> Home</a>
<a class="button icon icon-right ion-chevron-right" href="#/tab/fact1">
Fact1
</a>
<a class="button icon icon-right ion-chevron-right" href="#/tab/fact2">
Fact2
</a>
<a class="button icon icon-right ion-chevron-right" href="#/tab/fact3">
Fact3
</a>
</p>
</ion-content>
</ion-view>
</script>
<script id="templates/fact1.html" type="text/ng-template">
<ion-view view-title="Fact1">
<ion-content class="padding">
<p>
<a class="button icon ion-home" href="#/tab/home"> Home</a>
<a class="button icon icon-right ion-chevron-right" href="#/tab/fact1">
Fact1
</a>
<a class="button icon icon-right ion-chevron-right" href="#/tab/fact2">
Fact2
</a>
<a class="button icon icon-right ion-chevron-right" href="#/tab/fact3">
Fact3
</a>
</p>
</ion-content>
</ion-view>
</script>
<script id="templates/fact2.html" type="text/ng-template">
<ion-view view-title="Fact2">
<ion-content class="padding">
<p>
<a class="button icon ion-home" href="#/tab/home"> Home</a>
<a class="button icon icon-right ion-chevron-right" href="#/tab/fact1">
Fact1
</a>
<a class="button icon icon-right ion-chevron-right" href="#/tab/fact2">
Fact2
</a>
<a class="button icon icon-right ion-chevron-right" href="#/tab/fact3">
Fact3
</a>
</p>
</ion-content>
</ion-view>
</script>
<script id="templates/fact3.html" type="text/ng-template">
<ion-view view-title="Fact3">
<ion-content class="padding">
<p>
<a class="button icon ion-home" href="#/tab/home"> Home</a>
<a class="button icon icon-right ion-chevron-right" href="#/tab/fact1">
Fact1
</a>
<a class="button icon icon-right ion-chevron-right" href="#/tab/fact2">
Fact2
</a>
<a class="button icon icon-right ion-chevron-right" href="#/tab/fact3">
Fact3
</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>
</body>
</html>
有時候會在按下後退按鈕之前發生一些錯誤時發生這種情況 –
含糊不清。什麼是錯誤?據我所知,我在控制檯中沒有錯誤。 –