摘要：用Smack开发andorid IM, 开发群组时想获取服务器上所有的聊天室，调用下面方法时出现NullPointerException：Collection hostrooms = MultiUserChat.getHostedRooms(ClientConnectionServer.connection, ClientConnectionServer.connection.getServiceName());而方法的2个参数都不为空，感觉很怪，就去国外论坛看了原因，查了几篇文章发现解决办法，下面是论坛里的一些信息：The problem is that thestatic block of 阅读全文

摘要：用smack 开发IM　聊天工具时, 会用到UserSearchManager来搜索服务器的联系人 判断用户是否存在等等，代码如下： UserSearchManager search = new UserSearchManager(ClientConnectionServer.connection); Form searchForm = null; try { searchForm = search.getSearchForm("search." + ClientConnectionServer.connection.ge... 阅读全文

摘要：代码如下：Dialog dialog = new Dialog(context, R.style.MyDialog);Window window = dialog.getWindow();LayoutParams params = new LayoutParams();params.x = (int)v.getX();params.y = (int)v.getY();window.setAttributes(params);dialog.setContentView(inflater.inflate(R.layout.dialog, null));dialog.setCanceledOnTou 阅读全文