我正忙于学习PhoneGap并构建适用于Android的应用程序。

有了基本的my-app,设备就可以正常工作了。

现在,我正在尝试测试网络连接,但没有成功。

我安装了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>


向config.xml添加了功能:

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


一切都好。

当我做一个

$ phonegap local build android


它可以很好地构建应用程序。
当我打开构建的AndroidManifest.xml文件时,将出现以下条目:

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


运行应用程序时,出现“ ReferenceError:未定义连接”

这是我的代码,我是从PhoneGap获得的:

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);
}


有谁遇到过同样的问题,希望有解决的办法?

最佳答案

尝试添加超时功能以延迟navigator.connection.type调用。我遇到过同样的问题。这就是我解决的方法:

首先执行:

var networkState = navigator.connection.type;


然后设置超时并再次运行navigator.connection.type

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,但是这给了navigator.connection.type时间(在本示例中为500毫秒)以刷新其值。它的行为就像是一个异步调用。

您可以尝试用更大或更小的值替换500毫秒。

关于javascript - PhoneGap:ReferenceError:未定义连接,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/19926161/

10-11 22:46
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