2013.07.05——— android LocalSocket

2013.07.05——— android LocalSocket
参考：http://www.cnblogs.com/bastard/archive/2012/10/09/2717052.html
http://www.cnblogs.com/over140/archive/2011/11/22/2258372.html

package com.example.testlocalsocket;

import java.io.IOException;
import java.io.InputStream;

import android.app.Activity;
import android.net.LocalServerSocket;
import android.net.LocalSocket;
import android.net.LocalSocketAddress;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity {

	 public static String SOCKET_ADDRESS = "123456Video";
	    
	    private final Handler handler = new Handler();
	    
	    public class NotificationRunnable implements Runnable {
	        private String message = null;
	        
	        public void run() {
	            if (message != null && message.length() > 0) {
	                showNotification(message);
	            }
	        }
	        
	        /**
	        * @param message the message to set
	        */
	        public void setMessage(String message) {
	            this.message = message;
	        }
	    }
	    
	    // post this to the Handler when the background thread notifies
	    private final NotificationRunnable notificationRunnable = new NotificationRunnable();
	    
	    public void showNotification(String message) {
	        Toast.makeText(this, message, Toast.LENGTH_SHORT).show();
	    }
	    
	    class SocketListener extends Thread {
	        private Handler handler = null;
	        private NotificationRunnable runnable = null;
	        
	        public SocketListener(Handler handler, NotificationRunnable runnable) {
	            this.handler = handler;
	            this.runnable = runnable;
	            this.handler.post(this.runnable);
	        }
	        
	        /**
	        * Show UI notification.
	        * @param message
	        */
	        private void showMessage(String message) {
	            this.runnable.setMessage(message);
	            this.handler.post(this.runnable);
	        }
	        
	        @Override
	        public void run() {
	            //showMessage("DEMO: SocketListener started!");
	            try {
	                LocalServerSocket server = new LocalServerSocket(SOCKET_ADDRESS);
	                while (true) {
	                    LocalSocket receiver = server.accept();
	                    if (receiver != null) {
	                        InputStream input = receiver.getInputStream();
	                        
	                        // simply for java.util.ArrayList
	                        int readed = input.read();
	                        int size = 0;
	                        int capacity = 0;
	                        byte[] bytes = new byte[capacity];
	                        
	                        // reading
	                        while (readed != -1) {
	                            // java.util.ArrayList.Add(E e);
	                            capacity = (capacity * 3)/2 + 1;
	                            //bytes = Arrays.copyOf(bytes, capacity);
	                            byte[] copy = new byte[capacity];
	                            System.arraycopy(bytes, 0, copy, 0, bytes.length);
	                            bytes = copy;
	                            bytes[size++] = (byte)readed;
	                            
	                            // read next byte
	                            readed = input.read();
	                        }
	                        
	                        showMessage(new String(bytes, 0, size));
	                    }
	                }
	            } catch (IOException e) {
	                Log.e(getClass().getName(), e.getMessage());
	            }
	        }
	    }
	    
	    public static void writeSocket(String message) throws IOException {
	        LocalSocket sender = new LocalSocket();
	        sender.connect(new LocalSocketAddress(SOCKET_ADDRESS));
	        sender.getOutputStream().write(message.getBytes());
	        sender.getOutputStream().close();
	    }
	    
	    @Override
	    public void onCreate(Bundle savedInstanceState) {
	        super.onCreate(savedInstanceState);
	        setContentView(R.layout.activity_main);
	        
	        new SocketListener(this.handler, this.notificationRunnable).start();
	        
	        Button send1 = (Button)findViewById(R.id.send);
	        send1.setOnClickListener(new OnClickListener() {
	            
	            @Override
	            public void onClick(View v) {
	                try {
	                    writeSocket("hello");
	                } catch (IOException e) {
	                    Log.e(getClass().getName(), e.getMessage());
	                }
	            }
	            
	       });
	    }

}