android 服务端 例子

转载:http://www.cnblogs.com/yangfengwu/p/5294921.html#3860589

思路:

serversocket对象绑定端口
serverSocket = new ServerSocket(port);

Socket对象监听连接 ，如果无连接就会处于阻塞状态,inputstream对象获取输入流
clicksSocket = serverSocket.accept();
inputstream = clicksSocket.getInputStream();

Receive_Thread对象启动接收线程
receive_Thread.start();

inputstream对象获取消息
inputstream.read(buf);

ActivityMain.java

  1 import android.app.Activity;
  2 import android.net.wifi.WifiInfo;
  3 import android.net.wifi.WifiManager;
  4 import android.os.Bundle;
  5 import android.view.View;
  6 import android.view.View.OnClickListener;
  7 import android.widget.Button;
  8 import android.widget.EditText;
  9 import android.widget.Toast;
 10 
 11 import java.io.IOException;
 12 import java.io.InputStream;
 13 import java.io.OutputStream;
 14 import java.net.ServerSocket;
 15 import java.net.Socket;
 16 
 17 
 18 public class MainActivity extends Activity {
 19 
 20     ServerSocket serverSocket;//创建ServerSocket对象
 21     Socket clicksSocket;//连接通道，创建Socket对象
 22     Button startButton;//发送按钮
 23     EditText portEditText;//端口号
 24     EditText receiveEditText;//接收消息框
 25     Button sendButton;//发送按钮
 26     EditText sendEditText;//发送消息框
 27     InputStream inputstream;//创建输入数据流
 28     OutputStream outputStream;//创建输出数据流
 29     @Override
 30     protected void onCreate(Bundle savedInstanceState) {
 31         super.onCreate(savedInstanceState);
 32         setContentView(R.layout.activity_main);
 33         /**
 34          * 读一下手机wifi状态下的ip地址，只有知道它的ip才能连接它嘛
 35          */
 36         Toast.makeText(MainActivity.this, getLocalIpAddress(), Toast.LENGTH_LONG).show();
 37 
 38         startButton = (Button) findViewById(R.id.start_button);
 39         portEditText = (EditText) findViewById(R.id.port_EditText);
 40         receiveEditText = (EditText) findViewById(R.id.receive_EditText);
 41         sendButton = (Button) findViewById(R.id.send_button);
 42         sendEditText = (EditText) findViewById(R.id.message_EditText);
 43 
 44         startButton.setOnClickListener(startButtonListener);
 45         sendButton.setOnClickListener(sendButtonListener);
 46     }
 47     /**
 48      * 启动服务按钮监听事件
 49      */
 50     private OnClickListener startButtonListener = new OnClickListener() {
 51 
 52         @Override
 53         public void onClick(View v) {
 54             // TODO Auto-generated method stub
 55             /**
 56              * 启动服务器监听线程
 57              */
 58             ServerSocket_thread serversocket_thread = new ServerSocket_thread();
 59             serversocket_thread.start();
 60         }
 61     };
 62     /**
 63      * 服务器监听线程
 64      */
 65     class ServerSocket_thread extends Thread
 66     {
 67         public void run()//重写Thread的run方法
 68         {
 69             try
 70             {
 71                 int port =Integer.valueOf(portEditText.getText().toString());//获取portEditText中的端口号
 72                 serverSocket = new ServerSocket(port);//监听port端口，这个程序的通信端口就是port了
 73             }
 74             catch (IOException e)
 75             {
 76                 // TODO Auto-generated catch block
 77                 e.printStackTrace();
 78             }
 79             while (true)
 80             {
 81                 try
 82                 {
 83                     //监听连接 ，如果无连接就会处于阻塞状态，一直在这等着
 84                     clicksSocket = serverSocket.accept();
 85                     inputstream = clicksSocket.getInputStream();//
 86                     //启动接收线程
 87                     Receive_Thread receive_Thread = new Receive_Thread();
 8889                 }
 90                 catch (IOException e)
 91                 {
 92                     // TODO Auto-generated catch block
 93                     e.printStackTrace();
 94                 }
 95             }
 96         }
 97     }
 98     /**
 99      *
100      * 接收线程
101      *
102      */
103     class Receive_Thread extends Thread//继承Thread
104     {
105         public void run()//重写run方法
106         {
107             while (true)
108             {
109                 try
110                 {
111                     final byte[] buf = new byte[1024];
112                     final int len = inputstream.read(buf);
113                     //更新ui
114                     runOnUiThread(new Runnable()
115                     {
116                         public void run()
117                         {
118                             receiveEditText.append(new String(buf,0,len));
119                             receiveEditText.append("\n");
120                         }
121                     });
122                 }
123                 catch (Exception e)
124                 {
125                     // TODO Auto-generated catch block
126                     e.printStackTrace();
127                 }
128             }
129         }
130     }
131     /**
132      * 发送消息按钮事件
133      */
134     private OnClickListener sendButtonListener = new OnClickListener() {
135 
136         public static final String TAG = "sendButtonListener";
137 
138         @Override
139         public void onClick(View v) {
140             // TODO Auto-generated method stub
141             try
142             {
143                 //获取输出流
144                 outputStream = clicksSocket.getOutputStream();
145                 //发送数据
146                 //outputStream.write(sendEditText.getText().toString().getBytes());
147                 outputStream.write("0".getBytes());
148             }
149             catch (Exception e)
150             {
151                 // TODO Auto-generated catch block
152                 e.printStackTrace();
153             }
154         }
155     };
156     /**
157      *
158      * 获取WIFI下ip地址
159      */
160     private String getLocalIpAddress() {
161         WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(WIFI_SERVICE);
162         WifiInfo wifiInfo = wifiManager.getConnectionInfo();
163         // 获取32位整型IP地址
164         int ipAddress = wifiInfo.getIpAddress();
165 
166         //返回整型地址转换成“*.*.*.*”地址
167         return String.format("%d.%d.%d.%d",
168                 (ipAddress & 0xff), (ipAddress >> 8 & 0xff),
169                 (ipAddress >> 16 & 0xff), (ipAddress >> 24 & 0xff));
170     }
171 }

 

activity_main.xml

 1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     xmlns:tools="http://schemas.android.com/tools"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent" >
 5 
 6     <!-- 监听端口号 -->
 7     <TextView
 8         android:id="@+id/port_TextView"
 9         android:layout_width="wrap_content"
10         android:layout_height="wrap_content"
11         android:text="监听的端口：" />
12     <!-- 端口号 -->
13     <EditText
14         android:id="@+id/port_EditText"
15         android:layout_width="match_parent"
16         android:layout_height="wrap_content"
17         android:text="12345"
18         android:layout_below="@id/port_TextView"
19         />
20 
21     <!-- 发送的消息 -->
22     <TextView
23         android:id="@+id/message_TextView"
24         android:layout_width="wrap_content"
25         android:layout_height="wrap_content"
26         android:text="发送的消息"
27         android:layout_below="@id/port_EditText"/>
28     <!-- 发送消息框 -->
29     <EditText
30         android:id="@+id/message_EditText"
31         android:layout_width="match_parent"
32         android:layout_height="wrap_content"
33         android:hint="输入要发送的消息："
34         android:layout_below="@id/message_TextView"
35         />
36 
37     <!-- 启动按钮 -->
38     <Button
39         android:id="@+id/start_button"
40         android:layout_width="wrap_content"
41         android:layout_height="wrap_content"
42         android:text="启动服务"
43         android:layout_below="@id/message_EditText"
44         android:layout_alignParentLeft="true"
45         />
46     <!-- 发送按钮 -->
47     <Button
48         android:id="@+id/send_button"
49         android:layout_width="wrap_content"
50         android:layout_height="wrap_content"
51         android:text="发送消息"
52         android:layout_below="@id/message_EditText"
53         android:layout_alignParentRight="true"
54         />
55     <!-- 接收的消息-->
56     <TextView
57         android:id="@+id/receive_TextView"
58         android:layout_width="match_parent"
59         android:layout_height="wrap_content"
60         android:layout_below="@id/start_button"
61         android:text="接收的消息："
62         />
63     <!-- 接收消息框 -->
64     <EditText
65         android:gravity="top"
66         android:id="@+id/receive_EditText"
67         android:layout_width="match_parent"
68         android:layout_height="match_parent"
69         android:layout_below="@id/receive_TextView"
70         />
71 </RelativeLayout>

 

转载于:https://www.cnblogs.com/zhihaowu/p/8004992.html