/**
* Sets the port of the local Socks5 proxy. Default is 7777. If you set the port to a negative
* value Smack tries the absolute value and all following until it finds an open port.
*
* @param localSocks5ProxyPort the port of the local Socks5 proxy to set
*/
public static void setLocalSocks5ProxyPort(int localSocks5ProxyPort) {
SmackConfiguration.localSocks5ProxyPort = localSocks5ProxyPort;
}通过本地存储的一个值和当前获取值得比较得到一个boolean值
原文：http://blog.csdn.net/tw19811220/article/details/39112347
