前一篇文章實現了簡單的mina伺服器端與客戶端通訊，這篇文章我們要實現android手機上的登入功能。android的應用層語言是java，所以要把前一篇文章的程式改成android版本的也不難。接下來我們來看具體的實現：

  伺服器端：

和前面一篇文章的一樣就可以了，這裡不多說了，詳細請看android_專案_知識積累_mina通訊（java程式簡單通訊）。然後這裡我們要做的就是把前一篇文章的客戶端搬到android手機上來。

        程式碼如下：

package com.example.android_mina_client;

import java.net.InetSocketAddress;
import java.net.SocketAddress;

import org.apache.mina.core.filterchain.IoFilter;
import org.apache.mina.core.future.ConnectFuture;
import org.apache.mina.filter.codec.ProtocolCodecFilter;
import org.apache.mina.filter.codec.textline.TextLineCodecFactory;
import org.apache.mina.transport.socket.SocketConnector;
import org.apache.mina.transport.socket.nio.NioSocketConnector;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		findViewById(R.id.button1).setOnClickListener(
				new android.view.View.OnClickListener() {

					@Override
					public void onClick(View arg0) {
						// TODO Auto-generated method stub
						final EditText t1 = (EditText) findViewById(R.id.editText1);
						final EditText t2 = (EditText) findViewById(R.id.editText2);
						if ("".equals(t1.getText().toString()) || "".equals(t2.getText().toString())) {
							Toast.makeText(MainActivity.this, "使用者名稱和密碼均不能為空！",
									Toast.LENGTH_LONG).show();
						} else {
							// login
							new Thread(){

								@Override
								public void run() {
									// TODO Auto-generated method stub
									super.run();
									login(t1.getText().toString(),t2.getText().toString());
								}
								
							}.start();
						}
					}
				});
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

	private void login(String username,String userpasswd) {
		SocketConnector connector = new NioSocketConnector();
		IoFilter filter = new ProtocolCodecFilter(new TextLineCodecFactory());
		connector.getFilterChain().addLast("gzm", filter);
		SocketAddress soketAddress = new InetSocketAddress("192.168.80.105", 5333);//這裡我用的區域網，我的電腦的IP是192.168.80.105
 


		connector.setHandler(new ClientHandler());
		ConnectFuture future = connector.connect(soketAddress);
		future.join();
		if (!future.isConnected()) {
			System.out.println("連線伺服器失敗!");
			return;
		}
		future.getSession().write(username+","+userpasswd);
	}
}

package com.example.android_mina_client;

import org.apache.mina.core.service.IoHandlerAdapter;
import org.apache.mina.core.session.IoSession;

public class ClientHandler extends IoHandlerAdapter {
	
	public void messageReceived(IoSession arg0, Object message) throws Exception {
		System.out.println("伺服器發來訊息：" + message.toString());
	}

	public void exceptionCaught(IoSession arg0, Throwable arg1)
			throws Exception {

	}
}
 

先執行伺服器端，然後再執行android客戶端，實現的效果如下：