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[英]cordova-plugin-network-information on android return connection.type = NONE even if there is 4G connection
[英]Connection is not defined in cordova network information plugin
我跟着這篇文章:
它在瀏覽器上工作正常但是當我在android手機中安裝編譯的apk時,它會出現錯誤,指出Reference error : Connection is not defined.
在我使用$cordovaNetwork.isOnline();
我一直在摸不着頭腦,做了我應有的研究,嘗試按照建議的順序卸載和安裝,但沒有幫助。
幫我解決這個問題。 這個問題可能不是代碼的問題,可能需要一些聰明的修復才能使其正常工作。
這里正在討論同樣的問題,但我還沒有真正理解給定的代碼來自何處。
index.html:
<!DOCTYPE html>
<html ng-app="starter" >
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width">
<meta http-equiv="Content-Security-Policy" content="default-src *; style-src 'self' 'unsafe-inline'; script-src 'self' 'unsafe-inline' 'unsafe-eval'">
<title></title>
<link href="lib/ionic/css/ionic.css" rel="stylesheet">
<!-- <link href="lib/ionic/css/angular-datepicker.min.css" rel="stylesheet"> -->
<link href="css/style.css" rel="stylesheet">
<!-- IF using Sass (run gulp sass first), then uncomment below and remove the CSS includes above
<link href="css/ionic.app.css" rel="stylesheet">
-->
<!-- angular date picker css-->
<link href="lib/datePicker/css/angular-pickadate.css" rel="stylesheet">
<script src="lib/ionic/js/ionic.bundle.js"></script>
<script src="lib/ionic/js/highcharts-ng.js"></script>
<script src="lib/ionic/js/jquery.min.js"></script>
<script src="lib/ionic/js/highcharts.js"></script>
<script src="lib/ionic/js/ngStorage.min.js"></script>
<script src="lib/ngCordova/dist/ng-cordova.min.js"></script>
<!-- cordova script (this will be a 404 during development) -->
<script src="cordova.js"></script>
<!-- your app's js -->
<script src="js/app.js"></script>
<script src="js/controllers.js"></script>
</head>
<body ng-controller="LoginCtrl">
<ion-nav-bar class="mob-bar-balanced">
<!-- <ion-nav-back-button>
</ion-nav-back-button> -->
</ion-nav-bar>
<ion-nav-view></ion-nav-view>
</body>
</html>
app.js:
app.factory('ConnectivityMonitor', ['$rootScope', '$cordovaNetwork', function($rootScope, $cordovaNetwork){
return {
isOnline: function(){
if(ionic.Platform.isWebView()){
$rootScope.online = $cordovaNetwork.isOnline();
return $cordovaNetwork.isOnline();
} else {
$rootScope.online = navigator.onLine;
return navigator.onLine;
}
},
isOffline: function(){
if(ionic.Platform.isWebView()){
$rootScope.online = $cordovaNetwork.isOnline();
return !$cordovaNetwork.isOnline();
} else {
$rootScope.online = navigator.onLine;
return !navigator.onLine;
}
},
startWatching: function(){
if(ionic.Platform.isWebView()){
$rootScope.$on('$cordovaNetwork:online', function(event, networkState){
$rootScope.online =true;
console.log("went online");
});
$rootScope.$on('$cordovaNetwork:offline', function(event, networkState){
$rootScope.online =false;
console.log("went offline");
});
}
else {
window.addEventListener("online", function(e) {
$rootScope.online =true;
console.log("went online");
}, false);
window.addEventListener("offline", function(e) {
$rootScope.online =false;
console.log("went offline");
}, false);
}
}
}
}]);
.config(function($stateProvider,$urlRouterProvider){
$stateProvider
.state('Login',{
url:'/login',
onEnter:["$state","$localStorage", '$rootScope' , '$ionicViewSwitcher',function($state,$localStorage, $rootScope, $ionicViewSwitcher){
if((typeof($localStorage.userInfo)!== 'undefined') && (Object.keys($localStorage.userInfo).length !== 0)) {
$ionicViewSwitcher.nextTransition('none');
$state.go("Deployment");
}
}],
templateUrl:'templates/login.html',
controller:'LoginCtrl',
resolve: {
online: function(ConnectivityMonitor){
return ConnectivityMonitor.isOnline();
}
}
})
我不知道你提到的教程,但是,你可能想查看我寫的帖子,它逐步告訴你應該放置一些代碼的位置和原因(如果你是的話可能會有用)剛開始使用Ionic): http : //www.nikola-breznjak.com/blog/codeproject/check-network-information-change-with-ionic-famework/ 。
另外,我在Github上免費提供了示例代碼: https : //github.com/Hitman666/IonicNetworkInfo 。 您可以下載該項目(如果您不想自己完成這些步驟),請為您的設備構建它並在設備上進行測試。
以下是博文中的步驟:
通過執行以下操作啟動新的Ionic項目:
ionic start IonicNetworkInfo blank
然后,將目錄更改為新創建的IonicNetworkInfo:
cd IonicNetworkInfo
使用Bower安裝ngCordova:
bower install ngCordova
如果您有可能沒有安裝bower,可以使用npm安裝它:
npm install bower -g
在您喜歡的編輯器中打開www / index.html文件,並添加對ngCordova的引用(就在cordova.js腳本上方):
<!-- This is what you should add, the cordova below you'll already have -->
<script src="lib/ngCordova/dist/ng-cordova.min.js"></script>
<!-- cordova script (this will be a 404 during development) -->
<script src="cordova.js"></script>
通過在終端/命令提示符中執行以下命令來安裝ngCordova網絡插件(您應該從應用程序的根目錄執行此操作;因此,在我們的示例中為IonicNetworkInfo目錄):
cordova plugin add org.apache.cordova.network-information
要檢查是否已成功安裝插件,可以運行以下命令(從根目錄 - 我將不再重復此操作;當我說你應該從終端/命令提示符運行一些命令時,在這種情況下,表示從應用程序的根目錄):
cordova plugin list
您應該看到以下輸出:
> cordova plugin list
com.ionic.keyboard 1.0.4 "Keyboard"
org.apache.cordova.network-information 0.2.15 "Network Information"
打開www / js / app.js文件並將ngCordova添加到依賴項列表中,這樣第一行基本上如下所示:
angular.module('starter', ['ionic', 'ngCordova'])
在名為MyCtrl的www / js / app.js文件中創建一個新控制器,其中包含以下內容:
.controller('MyCtrl', function($scope, $cordovaNetwork, $rootScope) {
document.addEventListener("deviceready", function () {
$scope.network = $cordovaNetwork.getNetwork();
$scope.isOnline = $cordovaNetwork.isOnline();
$scope.$apply();
// listen for Online event
$rootScope.$on('$cordovaNetwork:online', function(event, networkState){
$scope.isOnline = true;
$scope.network = $cordovaNetwork.getNetwork();
$scope.$apply();
})
// listen for Offline event
$rootScope.$on('$cordovaNetwork:offline', function(event, networkState){
console.log("got offline");
$scope.isOnline = false;
$scope.network = $cordovaNetwork.getNetwork();
$scope.$apply();
})
}, false);
})
在此控制器中,您可以在deviceready事件上附加事件偵聽器(因為可能是此代碼運行時設備尚未初始化)並且您獲取網絡信息:
$cordovaNetwork.getNetwork();
有關您連接到互聯網的天氣的信息可通過以下行獲得:
$scope.isOnline = $cordovaNetwork.isOnline();
然后,您注冊兩個事件$ cordovaNetwork:online和$ cordovaNetwork:online,當設備聯機/離線時觸發。 在其中,您只需更新$ scope變量()。 僅供參考,www / js / app.js文件的全部內容應為:
// Ionic Starter App
// angular.module is a global place for creating, registering and retrieving Angular modules
// 'starter' is the name of this angular module example (also set in a <body> attribute in index.html)
// the 2nd parameter is an array of 'requires'
angular.module('starter', ['ionic', 'ngCordova'])
.run(function($ionicPlatform, $cordovaNetwork, $rootScope) {
$ionicPlatform.ready(function() {
// Hide the accessory bar by default (remove this to show the accessory bar above the keyboard
// for form inputs)
if(window.cordova && window.cordova.plugins.Keyboard) {
cordova.plugins.Keyboard.hideKeyboardAccessoryBar(true);
}
if(window.StatusBar) {
StatusBar.styleDefault();
}
});
})
.controller('MyCtrl', function($scope, $cordovaNetwork, $rootScope) {
document.addEventListener("deviceready", function () {
$scope.network = $cordovaNetwork.getNetwork();
$scope.isOnline = $cordovaNetwork.isOnline();
$scope.$apply();
// listen for Online event
$rootScope.$on('$cordovaNetwork:online', function(event, networkState){
$scope.isOnline = true;
$scope.network = $cordovaNetwork.getNetwork();
$scope.$apply();
})
// listen for Offline event
$rootScope.$on('$cordovaNetwork:offline', function(event, networkState){
console.log("got offline");
$scope.isOnline = false;
$scope.network = $cordovaNetwork.getNetwork();
$scope.$apply();
})
}, false);
});
在index.html文件中,在ion-content標簽內部粘貼以下內容:
<div class="card">
<div class="item item-text-wrap">
<h1>Network: {{network}}</h1>
</div>
</div>
<div class="card">
<div class="item item-text-wrap">
<ion-toggle ng-model="isOnline" ng-checked="item.checked">
<h1 ng-show="isOnline">I'm online</h1>
<h1 ng-show="! isOnline">I'm offline</h1>
</ion-toggle>
</div>
</div>
基本上我們在這里做的是顯示網絡變量的內容(通過控制器附加到$ scope)。 此外,通過使用離子切換組件,我們顯示“我在線”/“我離線”通知。
僅供參考,整個index.html文件的內容應如下所示:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width">
<title></title>
<link href="lib/ionic/css/ionic.css" rel="stylesheet">
<link href="css/style.css" rel="stylesheet">
<!-- IF using Sass (run gulp sass first), then uncomment below and remove the CSS includes above
<link href="css/ionic.app.css" rel="stylesheet">
-->
<!-- ionic/angularjs js -->
<script src="lib/ionic/js/ionic.bundle.js"></script>
<script src="lib/ngCordova/dist/ng-cordova.min.js"></script>
<!-- cordova script (this will be a 404 during development) -->
<script src="cordova.js"></script>
<!-- your app's js -->
<script src="js/app.js"></script>
</head>
<body ng-app="starter" ng-controller="MyCtrl">
<ion-pane>
<ion-header-bar class="bar-stable">
<h1 class="title">Ionic Blank Starter</h1>
</ion-header-bar>
<ion-content padding="true">
<div class="card">
<div class="item item-text-wrap">
<h1>Network: {{network}}</h1>
</div>
</div>
<div class="card">
<div class="item item-text-wrap">
<ion-toggle ng-model="isOnline" ng-checked="item.checked">
<h1 ng-show="isOnline">I'm online</h1>
<h1 ng-show="! isOnline">I'm offline</h1>
</ion-toggle>
</div>
</div>
</ion-content>
</ion-pane>
</body>
</html>
為了測試此應用程序,您應該在您的設備上運行它(因為您無法在iOS模擬器中禁用網絡)。 如果您將Android設備插入計算機(以及所有適當的SDK),則可以運行以下命令以使您的應用在Android設備上運行:
ionic build android && ionic run android
也許你還沒有安裝Network-Plugin。 請檢查一下。
現在,我認為這將是一個更好的使用方法
$ionicPlatform.ready(function() {
$scope.network = $cordovaNetwork.getNetwork();
$scope.isOnline = $cordovaNetwork.isOnline();
$scope.$apply();
});
而不是document.addEventListener(“deviceready”,function(){
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