android获取手机ip

/**
	 * 用来获取手机拨号上网（包括CTWAP和CTNET）时由PDSN分配给手机终端的源IP地址。
	 * 
	 * @return
	 * @author SHANHY
	 */
	public static String getPsdnIp() {
		try {
			for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
				NetworkInterface intf = en.nextElement();
				for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
					InetAddress inetAddress = enumIpAddr.nextElement();
					if (!inetAddress.isLoopbackAddress()) {
						return inetAddress.getHostAddress().toString();
					}
				}
			}
		} catch (Exception e) {
		}
		return "";
	}