cordova – 来自PhoneGap的网络连接状态不会在Ripple中更新

用于检查当前网络连接的标准PhoneGap API(见下文)似乎没有在Ripple Emulator中更新它的结果.当我更改连接类型并执行checkConnection()时,它会从第一次调用此函数返回连接类型(在deviceready处)

function checkConnection() {    // Checks current network status
    networkState = navigator.connection.type;
    console.log(networkState);

    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.NONE]     = 'No network connection';

    // DEBUG: notify on network state
    console.log("Connection type: " + states[networkState]);
}

还有什么我需要做的(添加一个事件监听器吗？)来使这个工作？
通常情况下,设备只会在状态从在线更改为离线时触发事件,但我需要区分“免费”互联网和xG连接.

显然navigator.connection.type没有在Windows平台上的cordova中更新.
查看代码,navigator.connection.type仅在’deviceready’事件后设置一次.

Trick是在相关事件上使用Connection#getInfo()手动更新它

var connection = navigator.connection;
function errorCallback(e) {
  console.warn(e);
};
function updateConnection(info) {
  connection.type = info;
}
document.addEventListener("resume", function() {
  connection.getInfo(updateConnection, errorCallback);
});
document.addEventListener("online", function() {
  connection.getInfo(updateConnection, errorCallback);
});
document.addEventListener("offline", function() {
  connection.getInfo(updateConnection, errorCallback);
});

免责声明：我自己的代码中的重构/复制粘贴片段应该开箱即用.