cordova-android/framework/assets/js/network.js

/**
 * This class contains information about any NetworkStatus.
 * @constructor
 */
function NetworkStatus() {
    //this.code = null;
    //this.message = "";
};

NetworkStatus.NOT_REACHABLE = 0;
NetworkStatus.REACHABLE_VIA_CARRIER_DATA_NETWORK = 1;
NetworkStatus.REACHABLE_VIA_WIFI_NETWORK = 2;

/**
 * This class provides access to device Network data (reachability).
 * @constructor
 */
function Network() {
    /**
     * The last known Network status.
	 * { hostName: string, ipAddress: string, 
		remoteHostStatus: int(0/1/2), internetConnectionStatus: int(0/1/2), localWiFiConnectionStatus: int (0/2) }
     */
	this.lastReachability = null;
};

/**
 * Called by the geolocation framework when the reachability status has changed.
 * @param {Reachibility} reachability The current reachability status.
 */
// TODO: Callback from native code not implemented for Android
Network.prototype.updateReachability = function(reachability) {
    this.lastReachability = reachability;
};

/**
 * Determine if a URI is reachable over the network.

 * @param {Object} uri
 * @param {Function} callback
 * @param {Object} options  (isIpAddress:boolean)
 */
Network.prototype.isReachable = function(uri, callback, options) {
    var isIpAddress = false;
    if (options && options.isIpAddress) {
        isIpAddress = options.isIpAddress;
    }
    PhoneGap.execAsync(callback, null, "Network Status", "isReachable", [uri, isIpAddress]);
};

PhoneGap.addConstructor(function() {
    if (typeof navigator.network == "undefined") navigator.network = new Network();
});