Android 基于xmpp协议，smack包，openfire服务端的高仿QQ的即时通讯实现【2】创建连接，登录openfire服务端

上节openfire服务器已经搭建完成，这节看看，怎么使用smack基于xmpp协议登录openfire服务器。

上节中，我们已经新建了很多用户，可以用他们来登录openfire服务端。创建服务连接类：XmppConnection.java

public class XmppConnection {
	public static int    SERVER_PORT = 5222;//服务端口 可以在openfire上设置
	public static String SERVER_HOST = "192.168.1.202";//你openfire服务器所在的ip
	public static  String SERVER_NAME = "daihuilin";//设置openfire时的服务器名
        private static XMPPConnection connection = null;
    
	private static void openConnection() {
		try {
			if (null == connection || !connection.isAuthenticated()) {
				XMPPConnection.DEBUG_ENABLED = true;//开启DEBUG模式
				//配置连接
				ConnectionConfiguration config = new ConnectionConfiguration(
						SERVER_HOST, SERVER_PORT,
						SERVER_NAME);
				config.setReconnectionAllowed(true);
				config.setSendPresence(true);
				config.setSASLAuthenticationEnabled(true);
				connection = new XMPPConnection(config);
				connection.connect();//连接到服务器
				//配置各种Provider，如果不配置，则会无法解析数据
				configureConnection(ProviderManager.getInstance());
			}
		} catch (XMPPException xe) {
			xe.printStackTrace();
		}
	}

	/**
	 * 创建连接
	 */	
	public static XMPPConnection getConnection() {
		if (connection == null) {
			openConnection();
		}
		return connection;
	}
	
	/**
	 * 关闭连接
	 */	
	public static void closeConnection() {
		connection.disconnect();
		connection = null;
	}
	/**
	 * xmpp配置
	 */
	private static void configureConnection(ProviderManager pm) {
		// Private Data Storage
		pm.addIQProvider("query", "jabber:iq:private",new PrivateDataManager.PrivateDataIQProvider());
		// Time
		try {
			pm.addIQProvider("query", "jabber:iq:time",Class.forName("org.jivesoftware.smackx.packet.Time"));
		} catch (Exception e) {
			e.printStackTrace();
		}
		// Roster Exchange
		pm.addExtensionProvider("x", "jabber:x:roster",new RosterExchangeProvider());
		// Message Events
		pm.addExtensionProvider("x", "jabber:x:event",new MessageEventProvider());
		// Chat State
		pm.addExtensionProvider("active","http://jabber.org/protocol/chatstates",new ChatStateExtension.Provider());
		pm.addExtensionProvider("composing","http://jabber.org/protocol/chatstates",new ChatStateExtension.Provider());
		pm.addExtensionProvider("paused","http://jabber.org/protocol/chatstates",new ChatStateExtension.Provider());
		pm.addExtensionProvider("inactive","http://jabber.org/protocol/chatstates",new ChatStateExtension.Provider());
		pm.addExtensionProvider("gone","http://jabber.org/protocol/chatstates",new ChatStateExtension.Provider());
		// XHTML
		pm.addExtensionProvider("html", "http://jabber.org/protocol/xhtml-im",new XHTMLExtensionProvider());
		// Group Chat Invitations
		pm.addExtensionProvider("x", "jabber:x:conference",new GroupChatInvitation.Provider());
		// Service Discovery # Items //解析房间列表
		pm.addIQProvider("query", "http://jabber.org/protocol/disco#items",new DiscoverItemsProvider());
		// Service Discovery # Info //某一个房间的信息
		pm.addIQProvider("query", "http://jabber.org/protocol/disco#info",new DiscoverInfoProvider());
		// Data Forms
		pm.addExtensionProvider("x", "jabber:x:data", new DataFormProvider());
		// MUC User
		pm.addExtensionProvider("x", "http://jabber.org/protocol/muc#user",new MUCUserProvider());
		// MUC Admin
		pm.addIQProvider("query", "http://jabber.org/protocol/muc#admin",new MUCAdminProvider());
		// MUC Owner
		pm.addIQProvider("query", "http://jabber.org/protocol/muc#owner",new MUCOwnerProvider());
		// Delayed Delivery
		pm.addExtensionProvider("x", "jabber:x:delay",new DelayInformationProvider());
		// Version
		try {
			pm.addIQProvider("query", "jabber:iq:version",Class.forName("org.jivesoftware.smackx.packet.Version"));
		} catch (ClassNotFoundException e) {
			// Not sure what's happening here.
		}
		// VCard
		pm.addIQProvider("vCard", "vcard-temp", new VCardProvider());
		// Offline Message Requests
		pm.addIQProvider("offline", "http://jabber.org/protocol/offline",new OfflineMessageRequest.Provider());
		// Offline Message Indicator
		pm.addExtensionProvider("offline","http://jabber.org/protocol/offline",new OfflineMessageInfo.Provider());
		// Last Activity
		pm.addIQProvider("query", "jabber:iq:last", new LastActivity.Provider());
		// User Search
		pm.addIQProvider("query", "jabber:iq:search", new UserSearch.Provider());
		// SharedGroupsInfo
		pm.addIQProvider("sharedgroup","http://www.jivesoftware.org/protocol/sharedgroup",new SharedGroupsInfo.Provider());
		// JEP-33: Extended Stanza Addressing
		pm.addExtensionProvider("addresses","http://jabber.org/protocol/address",new MultipleAddressesProvider());
		pm.addIQProvider("si", "http://jabber.org/protocol/si",new StreamInitiationProvider());
		pm.addIQProvider("query", "http://jabber.org/protocol/bytestreams",new BytestreamsProvider());
		pm.addIQProvider("query", "jabber:iq:privacy", new PrivacyProvider());
		pm.addIQProvider("command", "http://jabber.org/protocol/commands",new AdHocCommandDataProvider());
		pm.addExtensionProvider("malformed-action","http://jabber.org/protocol/commands",new AdHocCommandDataProvider.MalformedActionError());
		pm.addExtensionProvider("bad-locale","http://jabber.org/protocol/commands",new AdHocCommandDataProvider.BadLocaleError());
		pm.addExtensionProvider("bad-payload","http://jabber.org/protocol/commands",new AdHocCommandDataProvider.BadPayloadError());
		pm.addExtensionProvider("bad-sessionid","http://jabber.org/protocol/commands",new AdHocCommandDataProvider.BadSessionIDError());
		pm.addExtensionProvider("session-expired","http://jabber.org/protocol/commands",new AdHocCommandDataProvider.SessionExpiredError());
	}
}

复制了别人的QQ登录界面，作为客户端登录界面。

我们可以先注册一个帐号，下面是注册界面：

注册代码是：

private void registered() {

		String accounts = mNameEt.getText().toString();
		String password = mPasswdEt.getText().toString();
		String email = mEmailEt.getText().toString();
		String mingcheng = nameMCH.getText().toString();
		
		
		Registration reg = new Registration();
		reg.setType(IQ.Type.SET);
		reg.setTo(XmppConnection.getConnection().getServiceName());
		reg.setUsername(accounts);
		reg.setPassword(password);
		reg.addAttribute("name", mingcheng);
		reg.addAttribute("email", email);
		
		reg.addAttribute("android", "geolo_createUser_android");
		PacketFilter filter = new AndFilter(new PacketIDFilter(
		                                reg.getPacketID()), new PacketTypeFilter(
		                                IQ.class));
		PacketCollector collector = XmppConnection.getConnection().
		createPacketCollector(filter);
		XmppConnection.getConnection().sendPacket(reg);
		IQ result = (IQ) collector.nextResult(SmackConfiguration
		                                .getPacketReplyTimeout());
		                        // Stop queuing results
		collector.cancel();// 停止请求results（是否成功的结果）
		if (result == null) {
		Toast.makeText(getApplicationContext(), "服务器没有返回结果", Toast.LENGTH_SHORT).show();
		} else if (result.getType() == IQ.Type.ERROR) {
		if (result.getError().toString()
		                        .equalsIgnoreCase("conflict(409)")) {
		    Toast.makeText(getApplicationContext(), "这个账号已经存在", Toast.LENGTH_SHORT).show();
		    } else {
		        Toast.makeText(getApplicationContext(), "注册失败",
		                                        Toast.LENGTH_SHORT).show();
		    }
		} else if (result.getType() == IQ.Type.RESULT) {
			try {
				XmppConnection.getConnection().login(accounts, password);
				Presence presence = new Presence(Presence.Type.available);
				XmppConnection.getConnection().sendPacket(presence);
				DialogFactory.ToastDialog(this, "QQ注册", "亲，恭喜你，注册成功了！");
				Intent intent = new Intent();
				intent.putExtra("USERID", accounts);
				intent.setClass(RegisterActivity.this, FriendListActivity.class);
				startActivity(intent);
			} catch (XMPPException e) {
				e.printStackTrace();
			}	
		}
		
	}

接着就可以登录了，下面的是登录代码：

/**
	 * 提交账号密码信息到服务器
	 */
	private void submit() {
		String accounts = mAccounts.getText().toString();
		String password = mPassword.getText().toString();
		if (accounts.length() == 0 || password.length() == 0) {
			DialogFactory.ToastDialog(this, "登录提示", "亲！帐号或密码不能为空哦");
		} else {
			try {
				//连接服务器
				XmppConnection.getConnection().login(accounts, password);
				//连接服务器成功，更改在线状态
				Presence presence = new Presence(Presence.Type.available);
				XmppConnection.getConnection().sendPacket(presence);
				//弹出登录成功提示
				DialogFactory.ToastDialog(this, "登录提示", "亲，恭喜你，登录成功了！");
				//跳转到好友列表
				Intent intent = new Intent();
				intent.putExtra("USERID", accounts);
				intent.setClass(LoginActivity.this, FriendListActivity.class);
				startActivity(intent);
			} catch (XMPPException e) {
				XmppConnection.closeConnection();
				handler.sendEmptyMessage(2);
			}			
		}
	}