Android 使用socket实现两个真机之间的通信
1、使用Socket进行两个手机之间的通信需要安装两个不同的代码文件：服务端和客户端 分别进行安装
2、创建局域网：两个手机同时连一个WiFi或者两个手机进行热点和WLAN连接
3、客户端连接另一个手机IP时把另一个手机的IP改成静态IP（3的第二种方法做这个步骤）
下面上代码分客户端的和服务端的，布局文件textview、Editview、Button不上代码了，不懂socket通信原理的可以在百度百科上查看
客户端：
1）、MianSocketClient.java
public class MianSocketClient extends AppCompatActivity
{
private SocketClient client;
private TextView txt;
private EditText edit;
private Button btn;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState)
{
super.onCreate ( savedInstanceState );
setContentView ( R.layout.activity_main );
txt=(TextView)findViewById ( R.id.textView );
edit=(EditText)findViewById ( R.id.edit );
btn=(Button)findViewById ( R.id.btn );
client=new SocketClient ();
//服务端的IP地址和端口号
client.clintValue (this,"10.0.3.15" ,6666);
//开启客户端接收消息线程
client.openClientThread ();
/**
* 发送消息
* */
btn.setOnClickListener ( new View.OnClickListener ( )
{
@Override
public void onClick(View v)
{
client.sendMsg ( edit.getText ().toString () );
}
} );
/**
* 接受消息
*
**/
SocketClient.mHandler=new Handler ( ){
@Override
public void handleMessage(Message msg)
{
txt.setText ( msg.obj.toString ());
Log.i ( "msghh",msg.obj.toString ());
}
};
}
}2)、SocketClient.java
public class SocketClient
{
private Socket client;
private Context context;
private int port; //IP
private String site; //端口
private Thread thread;
public static Handler mHandler;
private boolean isClient=false;
private PrintWriter out;
private InputStream in;
private String str;
/**
* @effect 开启线程建立连接开启客户端
* */
public void openClientThread(){
thread=new Thread ( new Runnable ( )
{
@Override
public void run()
{
try {
/**
* connect()步骤
* */
client=new Socket ( site,port );
// client.setSoTimeout ( 5000 );//设置超时时间
if (client!=null)
{
isClient=true;
forOut();
forIn ();
}else {
isClient=false;
Toast.makeText ( context,"网络连接失败",Toast.LENGTH_LONG ).show ();
}
Log.i ( "hahah","site="+site+" ,port="+port );
}catch (UnknownHostException e) {
e.printStackTrace ();
Log.i ( "socket","6" );
}catch (IOException e) {
e.printStackTrace ();
Log.i ( "socket","7" );
}
}
} );
thread.start ();
}
/**
* 调用时向类里传值
* */
public void clintValue(Context context,String site,int port)
{
this.context=context;
this.site=site;
this.port=port;
}
/**
* @effect 得到输出字符串
* */
public void forOut()
{
try {
out=new PrintWriter ( client.getOutputStream () );
}catch (IOException e){
e.printStackTrace ();
Log.i ( "socket","8" );
}
}
/**
* @steps read();
* @effect 得到输入字符串
* */
public void forIn(){
while (isClient) {
try {
in=client.getInputStream ();
/**得到的是16进制数，需要进行解析*/
byte[] bt = new byte[50];
in.read ( bt );
str=new String ( bt,"UTF-8" );
} catch (IOException e) {}
if (str!=null) {
Message msg = new Message ( );
msg.obj =str ;
mHandler.sendMessage ( msg );
}
}
}
/**
* @steps write();
* @effect 发送消息
* */
public void sendMsg(final String str)
{
new Thread ( new Runnable ( )
{
@Override
public void run()
{
if (client!=null)
{
out.print ( str );
out.flush ();
Log.i ( "outtt",out+"" );
}else
{
isClient=false;
Toast.makeText ( context,"网络连接失败",Toast.LENGTH_LONG ).show ();
}
}
} ).start ();
}
}服务端：
1）、MianActivity.java 之前取的名字没有改 应该改成MainSocketServer.java
public class MainActivity extends AppCompatActivity
{
private TextView txt;
private EditText edit;
private Button btn;
/**启动服务端端口
* 服务端IP为手机IP
* */
private SocketServer server=new SocketServer ( 6666 );
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate ( savedInstanceState );
setContentView ( R.layout.activity_main );
txt = (TextView) findViewById ( R.id.textView );
edit = (EditText) findViewById ( R.id.edit );
btn = (Button) findViewById ( R.id.btn );
/**socket服务端开始监听*/
server.beginListen ( );
btn.setOnClickListener ( new View.OnClickListener ( )
{
@Override
public void onClick(View v)
{
/**socket发送数据*/
server.sendMessage ( edit.getText ().toString () );
}
} );
/**socket收到消息线程*/
SocketServer.ServerHandler=new Handler ( ){
@Override
public void handleMessage(Message msg)
{
txt.setText ( msg.obj.toString ());
}
};
}
}
2)、SocketServer.java
public class SocketServer
{
private ServerSocket server;
private Socket socket;
private InputStream in;
private String str=null;
private boolean isClint=false;
public static Handler ServerHandler;
/**
* @steps bind();绑定端口号
* @effect 初始化服务端
* @param port 端口号
* */
public SocketServer(int port){
try {
server= new ServerSocket ( port );
isClint=true;
}catch (IOException e){
e.printStackTrace ();
}
}
/**
* @steps listen();
* @effect socket监听数据
* */
public void beginListen()
{
new Thread ( new Runnable ( )
{
@Override
public void run()
{
try {
/**
* accept();
* 接受请求
* */
socket=server.accept ();
try {
/**得到输入流*/
in =socket.getInputStream();
/**
* 实现数据循环接收
* */
while (!socket.isClosed())
{
byte[] bt=new byte[50];
in.read ( bt );
str=new String ( bt,"UTF-8" ); //编码方式 解决收到数据乱码
if (str!=null&&str!="exit")
{
returnMessage ( str );
}else if (str==null||str=="exit"){
break; //跳出循环结束socket数据接收
}
System.out.println(str);
}
} catch (IOException e) {
e.printStackTrace ( );
socket.isClosed ();
}
} catch (IOException e) {
e.printStackTrace ( );
socket.isClosed ();
}
}
} ).start ();
}
/**
* @steps write();
* @effect socket服务端发送信息
* */
public void sendMessage(final String chat)
{
Thread thread=new Thread ( new Runnable ( )
{
@Override
public void run()
{
try {
PrintWriter out=new PrintWriter ( socket.getOutputStream () );
out.print ( chat );
out.flush ();
} catch (IOException e) {
e.printStackTrace ( );
}
}
} );
thread.start ();
}
/**
* @steps read();
* @effect socket服务端得到返回数据并发送到主界面
* */
public void returnMessage(String chat){
Message msg=new Message ();
msg.obj=chat;
ServerHandler.sendMessage ( msg );
}
}
这样就完成了，如果再有疑问就问我吧
实现了两个真机的简单通信
之后动项目时候改完的新代码，可以两个真机都可以装这个一个软件
下载地址：https://github.com/developer-wgl/socket