Android Socket编程初探

最新推荐文章于 2021-08-25 20:39:05 发布

原创最新推荐文章于 2021-08-25 20:39:05 发布 · 999 阅读

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#socket #android #string #server #button #class

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本文详细介绍了如何使用Socket实现Android设备与PC之间的通信，包括服务端与客户端的编程实现。

Android与PC通过Socket进行通信。

PC: Server
Android:Client

服务端程序：

package wu.bu.server;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketException;
import java.util.Enumeration;

public class Server {

	// 监听器对象
	private ServerSocket server;

	/**
	 * 实例化，指定监端口
	 * 
	 * @param port
	 */
	public Server(int port) {
		try {

			// 指定监听端口和最大访问数量
			server = new ServerSocket(port, 10);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}


	public void Listener() {
		while (true) {
			try {
				System.out.println("begin");
				// 开始监听，等待数据的到来
				final Socket socket = server.accept();
				// 新的线程
				new Thread(new Runnable() {
					public void run() {
						// 缓冲器
						BufferedReader buffer;
						try {
							buffer = new BufferedReader(new InputStreamReader(
									socket.getInputStream(), "UTF-8"));
							while (!socket.isClosed()) {
								String str;
								str = buffer.readLine();
								if (str == null)
									break;
								System.out.println(str);
							}
							System.out.println("--------------------");
							socket.close();
						} catch (UnsupportedEncodingException e) {
							e.printStackTrace();
						} catch (IOException e) {
							e.printStackTrace();
						}
					}
				}).start();

			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}

	/**
	 * @vennle
	 * 
	 * @param args
	 */
	public static void main(String[] args) {
		// 设置5554为服务器监听端口
		new Server(5554).Listener();

	}
}

client端：

package com.bu.client;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.net.Socket;
import java.net.UnknownHostException;

public class ClientSocket {

	private Socket socket;
	private final static String IP = "10.0.129.143";
	private final static int PORT = 5554;

	public ClientSocket() {
		super();
		if (socket == null) {
			try {
				socket = new Socket(IP, PORT);
			} catch (UnknownHostException e) {
				e.printStackTrace();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}

	public void send(String msg) {
		try {
			PrintWriter out = new PrintWriter(socket.getOutputStream());
			out.println(msg);
			out.flush();

		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	public synchronized void close() {
		try {
			socket.close();
			socket = null;
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}

Activity：

package com.bu.client;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class SocketClient extends Activity {
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		final EditText text = (EditText) this.findViewById(R.id.et_msg);

		final Button button = (Button) this.findViewById(R.id.btn_send);
		button.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				ClientSocket socket = new ClientSocket();
				String str = text.getText().toString();
				socket.send(str);
				socket.close();
			}
		});

	}
}