检查与phonegap的互联网连接

Question

我看到几个不同的选项来检查与phonegap的互联网连接.有document.addEventListener("online", onOnline, false);,也有navigator.network.connection.type...但我不确定哪一个是最佳实践.我还希望能够防止手机连接到wifi网络但没有互联网连接的坏情况.

$(document).on('pagecreate','#explanation-short', function(){
     if ( isPhoneGap() ) {
    if (checkConnection() == "none" ) {
        connectionStatus = 'offline'; 
    } else {
        connectionStatus = 'online';
    }
    function checkConnection() {
        var networkState = navigator.network.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.NONE]     = 'No network connection';
        //console.log('Connection : ' + Connection);
        //console.log('Connection type: ' + states[networkState]);
        return networkState;
    }
} else {
    connectionStatus = navigator.onLine ? 'online' : 'offline';
}
    console.log("connectionStatus : "+connectionStatus);
});

例如,如果手机连接到wifi,此代码有效,但我们不确定互联网是否实际可用.

phonegap 3.3+和Jquery mobile 1.4的最佳做法是什么？

Answer 1

事件,

document.addEventListener("online", onOnline, false);

仅在您的应用已加载并重新获得连接时才会触发.在应用程序启动时不会触发此操作.

因此,您必须checkConnection()在启动应用程序时使用该方法,然后如果您需要在应用程序运行时稍后检查,则使用事件侦听器.