PhoneGap的：的ReferenceError：连接没有定义 [英] PhoneGap: ReferenceError: Connection is not defined

问题描述

我忙着学习的PhoneGap和构建应用程序为Android。

I'm busy learning PhoneGap and building an application for Android.

得到了我的基本应用与设备准备工作的罚款。

Got the basic my-app with device ready working fine.

现在我想测试没有成功的网络连接。

Now I'm trying to test the network connection with no success.

我安装插件的网络信息：

I installed the plugin-network-information:

$ cordova plugin add org.apache.cordova.network-information<br>
$ phonegap local plugin add https://git-wip-us.apache.org/repos/asf/cordova-plugin-network-information.git<br>

新增功能的config.xml：

Added feature to config.xml:

<feature name="NetworkStatus">
<param name="android-package" value="org.apache.cordova.networkinformation.NetworkManager" />
</feature>

一切OK了。

当我做了

$ phonegap local build android

它建立应用程序的罚款。
当我打开内置AndroidManifest.xml文件，下面的条目有：

It builds the app fine. When I open the built AndroidManifest.xml file, the following entry is there:

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 

当我运行应用程序，我得到一个的ReferenceError：连接没有定义

When I run the app, I get a "ReferenceError: Connection is not defined"

下面是我的code，我得到这个从的PhoneGap

Here is my code, I got this from PhoneGap:

try {
var networkState = navigator.connection.type;

var states = {};
states[Connection.UNKNOWN] = 'Unknown connection';
states[Connection.ETHERNET] = 'Ethernet connection';
states[Connection.WIFI] = 'WiFi connection';
states[Connection.CELL_2G] = 'Cell 2G connection';
states[Connection.CELL_3G] = 'Cell 3G connection';
states[Connection.CELL_4G] = 'Cell 4G connection';
states[Connection.CELL] = 'Cell generic connection';
states[Connection.NONE] = 'No network connection';

alert('Connection type: ' + states[networkState]);
} catch (e) {
alert(e);
}

有没有人有同样的问题，并希望解决的办法？

Has anyone had the same problem and hopefully a solution?

推荐答案

尝试添加一个超时功能延迟 navigator.connection.type 电话。我有同样的问题。这是我如何解决它：

Try to add a timeout function to delay the navigator.connection.type call. I had the same issue. This is how i solved it:

首先做的：

var networkState = navigator.connection.type;

然后设置超时并运行 navigator.connection.type 又说：

setTimeout(function(){

    networkState = navigator.connection.type; // have to do this second time to pick up the refreshed value

    var states = {};
    states[Connection.UNKNOWN] = 'Unknown connection';
    states[Connection.ETHERNET] = 'Ethernet connection';
    states[Connection.WIFI] = 'WiFi connection';
    states[Connection.CELL_2G] = 'Cell 2G connection';
    states[Connection.CELL_3G] = 'Cell 3G connection';
    states[Connection.CELL_4G] = 'Cell 4G connection';
    states[Connection.CELL] = 'Cell generic connection';
    states[Connection.NONE] = 'No network connection';

    alert('Connection type: ' + states[networkState]);

}, 500);

我知道这很奇怪，但是这给时间（500毫秒在这个例子中），以navigator.connection.type刷新它的价值。的它的作用就像是一个异步调用。的

您可以用替换试验的 500毫秒的一个更大或更小的值。

You can experiment with replacing 500 ms with a bigger or smaller value.

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