Android apps浅析02-Android IM:一个类似手机QQ的即时通讯开源实现
这是Android上的一个简单的IM应用程序运行时,应用程序发出HTTP请求到服务器,在PHP和MySQL,验证,注册和得到其他朋友的状态和数据来实现,那么它与其他设备的其他应用程序通过通信套接字接口。
1. 数据库只要2个表:朋友表和用户表:
CREATE TABLE `friends` ( `Id` int(10) unsigned NOT NULL auto_increment, `providerId` int(10) unsigned NOT NULL default '0', `requestId` int(10) unsigned NOT NULL default '0', `status` binary(1) NOT NULL default '0', PRIMARY KEY (`Id`), UNIQUE KEY `Index_3` (`providerId`,`requestId`), KEY `Index_2` (`providerId`,`requestId`,`status`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 COMMENT='providerId is the Id of the users who wish to be friend with'; CREATE TABLE `users` ( `Id` int(10) unsigned NOT NULL auto_increment, `username` varchar(45) NOT NULL default '', `password` varchar(32) NOT NULL default '', `email` varchar(45) NOT NULL default '', `date` datetime NOT NULL default '0000-00-00 00:00:00', `status` tinyint(3) unsigned NOT NULL default '0', `authenticationTime` datetime NOT NULL default '0000-00-00 00:00:00', `userKey` varchar(32) NOT NULL default '', `IP` varchar(45) NOT NULL default '', `port` int(10) unsigned NOT NULL default '0', PRIMARY KEY (`Id`), UNIQUE KEY `Index_2` (`username`), KEY `Index_3` (`authenticationTime`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
2. 核心代码是发送Http request和Socket:
public String sendHttpRequest(String params) { URL url; String result = new String(); try { url = new URL(AUTHENTICATION_SERVER_ADDRESS); HttpURLConnection connection; connection = (HttpURLConnection) url.openConnection(); connection.setDoOutput(true); PrintWriter out = new PrintWriter(connection.getOutputStream()); out.println(params); out.close(); BufferedReader in = new BufferedReader( new InputStreamReader( connection.getInputStream())); String inputLine; while ((inputLine = in.readLine()) != null) { result = result.concat(inputLine); } in.close(); } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } if (result.length() == 0) { result = HTTP_REQUEST_FAILED; } return result; } public boolean sendMessage(String message, String ip, int port) { try { String[] str = ip.split("\\."); byte[] IP = new byte[str.length]; for (int i = 0; i < str.length; i++) { IP[i] = (byte) Integer.parseInt(str[i]); } Socket socket = getSocket(InetAddress.getByAddress(IP), port); if (socket == null) { return false; } PrintWriter out = null; out = new PrintWriter(socket.getOutputStream(), true); out.println(message); } catch (UnknownHostException e) { return false; //e.printStackTrace(); } catch (IOException e) { return false; //e.printStackTrace(); } return true; }
使用http request和socket实现的Android即时通讯应用
原始源码:https://code.google.com/p/simple-android-instant-messaging-application/
最新源码:https://github.com/Pirngruber/AndroidIM
源码下载:http://download.csdn.net/user/yangzhenping
初始作者提供的源码下载:http://download.csdn.net/detail/yangzhenping/8397989