javascript 离子模式未打开（类型错误：无法读取未定义的属性“显示”）？
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Ionic Modal not opening (TypeError: Cannot read property 'show' of undefined)?
提问by Bruno Duarte Brito
I am making an ionic + angularJs app, for Android to be specific. I don't know why, but in my so named homeController, whenever I tried to call a function to show me a $ionicModal, it gives me an error...
我正在制作一个 ionic + angularJs 应用程序，具体适用于 Android。我不知道为什么，但是在我的名字中homeController，每当我尝试调用一个函数来显示 a 时$ionicModal，它都会给我一个错误......
TypeError: Cannot read property 'show' of undefined at Scope.$scope.openModal (homeModule.js:18) at new (homeModule.js:59) at Object.invoke (ionic.bundle.js:11994) at $get.extend.instance (ionic.bundle.js:16247) at ionic.bundle.js:15502 at forEach (ionic.bundle.js:8155) at nodeLinkFn (ionic.bundle.js:15501) at compositeLinkFn (ionic.bundle.js:14887) at publicLinkFn (ionic.bundle.js:14766) at IonicModule.controller.self.appendViewElement (ionic.bundle.js:47324)
类型错误：无法在 $get 处的 Object.invoke (ionic.bundle.js:11994) 处的 new (homeModule.js:59) 处读取 Scope.$scope.openModal (homeModule.js:18) 处未定义的属性“show”。扩展实例 (ionic.bundle.js:16247) at ionic.bundle.js:15502 at forEach (ionic.bundle.js:8155) at nodeLinkFn (ionic.bundle.js:15501) at CompositeLinkFn (ionic.bundle.js) :14887) at publicLinkFn (ionic.bundle.js:14766) at IonicModule.controller.self.appendViewElement (ionic.bundle.js:47324)
My controller looks like this (the start of it):
我的控制器看起来像这样（它的开始）：
app.controller('homeController', function($scope, $ionicPopup, $state, $ionicLoading, $rootScope, $ionicModal, mapFactory){
// Load the modal from the given template URL
$ionicModal.fromTemplateUrl('templates/loginModal.html', function($ionicModal) {
$scope.modal = $ionicModal;
console.log($scope.modal);
}, {
scope: $scope,
animation: 'slide-in-up',
backdropClickToClose: false,
hardwareBackButtonClose: false,
focusFirstInput: true
});
$scope.openModal = function() {
$scope.modal.show();
};
$scope.closeModal = function() {
$scope.modal.hide();
};
I have tried already many different ways to make the modal open, the funny thing is, whenever I go to a new $state, and go back, it opens... But not when I refresh the page. Also, I did a console.log($scope.modal)to see if my variable was being set, and the result was:
我已经尝试了很多不同的方法来打开模态，有趣的是，每当我进入一个新的 $state 并返回时，它会打开......但不是当我刷新页面时。另外，我做了一个console.log($scope.modal)看看我的变量是否被设置，结果是：
ionic.Utils.inherit.child {focusFirstInput: true, unfocusOnHide: true, focusFirstDelay: 600, backdropClickToClose: false, hardwareBackButtonClose: false…}$el: JQLite[1]animation: "slide-in-up"backdropClickToClose: falseel: div.modal-backdropfocusFirstDelay: 600focusFirstInput: truehardwareBackButtonClose: falsemodalEl: ion-modal-view.modalscope: ChildScopeunfocusOnHide: trueviewType: "modal"__proto__: ionic.Utils.inherit.Surrogate
Can anyone please help me on this one? Thanks in advance.
任何人都可以帮我解决这个问题吗？提前致谢。
采纳答案by Brad Barber
The error means $scope.modalwas not created - you call to fromTemplateUrlisn't right. The second parameter is the modal options and you're passing a callback.
错误意味着$scope.modal未创建 - 您调用的fromTemplateUrl是不对的。第二个参数是模式选项，您正在传递回调。
The documentation provides a good example.
该文档提供了一个很好的示例。
In your case, the call to fromTemplateUrlshould look more like this:
在您的情况下，对的调用fromTemplateUrl应该更像这样：
$ionicModal.fromTemplateUrl('templates/loginModal.html', {
scope: $scope,
animation: 'slide-in-up',
backdropClickToClose: false,
hardwareBackButtonClose: false,
focusFirstInput: true
}).then(function(modal) {
$scope.modal = modal;
console.log($scope.modal);
});
回答by Bruno Duarte Brito
I think i found the fix. I was trying to open the modal from inside a 'if' statement, as soon as i took it off from the 'if', it worked perfectly fine. Anyways, thank you Brad.
我想我找到了解决办法。我试图从“if”语句中打开模态，一旦我将它从“if”中取出，它就工作得很好。不管怎样，谢谢布拉德。
