我们经常需要在 UI 上，例如在弹出框、加载框、其他弹出层中显示或隐藏背景层。
在组件中可以使用$ionicBackdrop.retain()来显示背景层，使用$ionicBackdrop.release()隐藏背景层。
每次调用retain后，背景会一直显示，直到调用release消除背景层。
| <body ng-app="starter" ng-controller="actionsheetCtl" > |
| <ion-pane> |
| <ion-content > |
| <h2 ng-click="action()">$ionicBackdrop</h2> |
| </ion-content> |
| </ion-pane> |
| </body> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width"> |
| <title>芝麻教程(web3.xin)</title> |
| <link href="//cdn.bootcss.com/ionic/1.3.0/css/ionic.css" rel="stylesheet"> |
| <script src="//cdn.bootcss.com/ionic/1.3.0/js/ionic.bundle.js"></script> |
| <script type="text/javascript"> |
| angular.module('starter', ['ionic']) |
| .run(function($ionicPlatform) { |
| $ionicPlatform.ready(function() { |
| // Hide the accessory bar by default (remove this to show the accessory bar above the keyboard |
| // for form inputs) |
| if(window.cordova && window.cordova.plugins.Keyboard) { |
| cordova.plugins.Keyboard.hideKeyboardAccessoryBar(true); |
| } |
| if(window.StatusBar) { |
| StatusBar.styleDefault(); |
| } |
| }); |
| }) |
| .controller( 'actionsheetCtl',['$scope','$timeout' ,'$ionicBackdrop',function($scope,$timeout,$ionicBackdrop){ |
| $scope.action = function() { |
| $ionicBackdrop.retain(); |
| $timeout(function() { //默认让它1秒后消失 |
| $ionicBackdrop.release(); |
| }, 1000); |
| }; |
| }]) |
| </script> |
| </head> |
| <body ng-app="starter" ng-controller="actionsheetCtl" > |
| <ion-pane> |
| <ion-content > |
| <h2 ng-click="action()">$ionicBackdrop</h2> |
| </ion-content> |
| </ion-pane> |
| </body> |
| </html> |
