Question

我正在使用phonegap开发移动应用程序，但我在处理后退按钮事件时遇到问题。我的代码是，

我的index.js

中已准备好设备

var app = {
    // Application Constructor
    initialize: function() {
        this.bindEvents();
    },

    bindEvents: function() {
        document.addEventListener('deviceready', this.onDeviceReady, false);
    },

    onDeviceReady: function() {
        parsePlugin.initialize("xxxxxxx", "xxxxxxx", function(){
            //nothing required to do
        }, function(e){
            alert('Unable to Initialize Parse!');
        });
        parsePlugin.getInstallationId(function(id) {
            window.localStorage.setItem("deviceToken", id);
        }, function(e) {
            alert('Unable to get DeviceToken!');
        });

        app.receivedEvent('deviceready');
        window.location = "main.html"
    },
    // Update DOM on a Received Event
    receivedEvent: function(id) {

    }
};

app.initialize();

我的index.js将我重定向到main.html页面，我有这段代码，

<script type="text/javascript">
        document.addEventListener("backbutton", onBackKeyDown, false);

        function onBackKeyDown(e) { 
            alert('back button triggered'); 
            console.log(e); 
            e.preventDefault(); 
            return false; 
            }
    </script>

请指导我，我的错误在哪里，为什么我没有收到后退活动。

Answer 1

首先听取此事件：

    document.addEventListener("deviceready", onDeviceReady, false);

看起来像这样：

<script type="text/javascript">
    document.addEventListener("deviceready", onDeviceReady, false);
     function onDeviceReady{
        document.addEventListener("backbutton", onBackKeyDown, false);
        function onBackKeyDown(e) { 
            alert('back button triggered'); 
            console.log(e); 
            e.preventDefault(); 
            return false; 
            }
        }
    </script>

phongap没有触发后退事件

1 个答案: