我正在使用 Angular 创建一个页面，其中有三个控制器。它们使用 ng-show 指令加载。每个控制器都有按钮，其中 ng-click 会调用功能。功能很简单，隐藏一个控制器，并使下一个可见。
问题：此功能适用于一个控制器，但由于某种原因，它不适用于另一个控制器。确切地说， levelsView 控制器已加载，但 cardsView 则未加载。如果我在HTML页面中将 ng-show 设置为 true ，而不是通过该功能，则 CardsView 会变为可见。我花了几天时间试图找到问题但我不能，请帮助我解决这个“神秘”。
HTML页面：
<main>
<div class="bottom-container">
<div ng-controller="rulesCtrl as rulesView" ng-hide="rulesView.gameMetrics.levelsActive || rulesView.gameMetrics.cardsActive"
class="rules">
<p><span class="bold large-text">Rules: </span>Find a pair for the HTML opening and closing tag or match CSS value with a property within given time. <button class="link-button" data="#rulesHide">Read more...</button></p>
<div class="rules-details" id="rulesHide">
<p><span class="bold large-text">HTML: </span>For HTML a pair would be <span class="bold"><div> + </div></span>.</p>
<p><span class="bold large-text">CSS: </span>For CSS an example could be the property <span class="bold">display</span>. It has values: <span class="bold">block, inline, inline-block </span>etc. A pair would be <span class="bold">display + block.</span></p>
<p>The main challange is to find the pairs fast. The harder the level the shorter will be the time given.</p>
</div>
<button class="button btn-start" ng-click="rulesView.showLevels()">Start</button>
</div>
<div ng-controller="levelsCtrl as levelsView" ng-show="levelsView.gameMetrics.levelsActive" class="levels">
<h2>Select Level:</h2>
<button class="button btn-easy" ng-click="levelsView.showCards()">Easy</button>
<button class="button btn-medium">Medium</button>
<button class="button btn-hard">Hard</button>
</div>
<div ng-controller="cardsCtrl as cardsView" ng-show="cardsView.gameMetrics.cardsActive" class="game-field">
<h2>Find the tag pairs on time.</h2>
<span class="fa fa-clock-o fa-lg"></span>
<span class="game-timer">{{ cardsView.timeLeft }}</span>
<span class="game-timer-msg">{{ cardsView.timesUp }}</span>
<div class="flex-container">
<div class="flex-item"
ng-repeat="cardsData in cardsView.data">
{{ cardsData.text }}
</div>
</div>
</div>
</div>
</main>
带数据的工厂：
(function(){
angular
.module("syntaxPairing")
.factory("gameMetrics", GameMetrics);
GameMetrics.$inject = ["DataService"];
function GameMetrics(DataService){
var gameObject = {
rulesActive: true,
levelsActive: false,
cardsActive: false,
changeVisibility: changeVisibility
};
return gameObject;
function changeVisibility(metric, state){
if(metric === "rulesView"){
gameObject.rulesActive = state;
}else if(metric === "levelsView"){
gameObject.levelsActive = state;
}else if(metric === "cardsView"){
gameObject.cardsActive = state;
}
return false;
}
}
})();
第一个控制器（rulesView.js）：
(function(){
angular
.module("syntaxPairing")
.controller("rulesCtrl", RulesController);
RulesController.$inject = ["gameMetrics", "DataService"];
function RulesController(gameMetrics){
var vm = this;
vm.gameMetrics = gameMetrics;
vm.showLevels = showLevels;
function showLevels(){
gameMetrics.changeVisibility("rulesView", false);
gameMetrics.changeVisibility("levelsView", true);
}
}
})();
第二个控制器（levelsView.js）：
(function(){
angular
.module("syntaxPairing")
.controller("levelsCtrl", LevelsController);
LevelsController.$inject = ["gameMetrics", "DataService"];
function LevelsController(gameMetrics){
var vm = this;
vm.gameMetrics = gameMetrics;
vm.showCards = showCards;
function showCards(){
gameMetrics.changeVisibility("levelsView", false);
gameMetrics.changeVisibility("rulesView", false);
gameMetrics.changeVisibility("cardsView", true);
}
}
})();
第三个控制器（cardsView.js）：
(function(){
angular
.module("syntaxPairing")
.controller("cardsCtrl", CardsController);
CardsController.$inject = ["gameMetrics", "DataService", "$timeout"];
function CardsController(gameMetrics, DataService, $timeout){
var vm = this;
vm.data = DataService.cardsData;
vm.timeLeft = 5;
vm.onTimeout = onTimeout;
function onTimeout(){
vm.timeLeft--;
if(vm.timeLeft > 0){
mytimeout = $timeout(onTimeout, 1000);
}else{
vm.timesUp = "The time is up!";
}
}
var mytimeout = $timeout(onTimeout, 1000);
}
})();
DataService ：
(function(){
angular
.module("syntaxPairing")
.factory("DataService", DataFactory);
function DataFactory(){
var dataObject = {
cardsData: cardsData
};
return dataObject;
}
var cardsData = [
{
type: "text",
text: "<html>",
selected: null,
correct: null
},
{
type: "text",
text: "</html>",
selected: null,
correct: null
},
{
type: "text",
text: "<header>",
selected: null,
correct: null
},
{
type: "text",
text: "</header>",
selected: null,
correct: null
},
{
type: "text",
text: "<body>",
selected: null,
correct: null
},
{
type: "text",
text: "</body>",
selected: null,
correct: null
},
{
type: "text",
text: "<p>",
selected: null,
correct: null
},
{
type: "text",
text: "</p>",
selected: null,
correct: null
},
{
type: "text",
text: "<script>",
selected: null,
correct: null
},
{
type: "text",
text: "</script>",
selected: null,
correct: null
},
{
type: "text",
text: "<span>",
selected: null,
correct: null
},
{
type: "text",
text: "</span>",
selected: null,
correct: null
}
]
})();
答案 0 :(得分：1)
在第三个控制器即cardsCtrl中，您缺少gameMetrics。所以cardsView.gameMetrics.cardsActive不会改变。
只需添加以下行，即可完美运行。
vm.gameMetrics = gameMetrics;