安卓Socket连接实现连接实现发送接收数据，openwrt wifi转串口连接单片机实现控制

socket 连接采用流的方式进行发送接收数据，采用thread线程的方式。

什么是线程？
这里写图片描述

详细代码介绍：

博文来源：http://blog.csdn.net/zhaocundang 如果你对代码有些疑问，请在下面留言来探讨，或者加我的QQ463431476一起学习进步！

  //线程mRunnable启动
        private Runnable    mRunnable   = new Runnable() 
            {
                public void run()
                {
                      try 
                    {               
                        //连接服务器
                        mSocketClient = new Socket(wifiurl,Integer.parseInt(wificom)); 
                        //取得输入、输出流
                        mBufferedReaderClient = new BufferedReader(new InputStreamReader(mSocketClient.getInputStream()));
                        mPrintWriterClient = new PrintWriter(mSocketClient.getOutputStream(), true);
                        recvMessageClient = "wifi成功连接";//消息换行
                    // Toast.makeText(getActivity(),"wifi连接成功",Toast.LENGTH_SHORT).show();
                        Message msg = new Message();
                        msg.what = 1;
                        mHandler.sendMessage(msg);               
                    }
                    catch (Exception e) 
                    {
                        recvMessageClient = "连接错误！";//消息换行
                        Message msg = new Message();
                        msg.what = 1;
                        mHandler.sendMessage(msg);
                        return;
                    }   
                      setRecvMessage();
                }
            };


       public void setRecvMessage(){    
            char[] buffer = new char[256];
            int count = 0;
            while (true)
            {
                try
                {
                     if((count = mBufferedReaderClient.read(buffer))>0)
                    {                       
                        recvMessageClient = getInfoBuff(buffer, count);
　　　　　　　　　　　　　　//将接收的数据放入数组

                        Thread.sleep(500);
                        Message msg = new Message();
                        msg.what = 1;
                        mHandler.sendMessage(msg); 

                    }
                }
                catch (Exception e)
                {
                    recvMessageClient = "接收异常:" + e.getMessage() + "\n";//消息换行
                    Message msg = new Message();
                    msg.what = 0;
                    mHandler.sendMessage(msg);
                }
            }
       }

       //handler用于线程中更新界面数据

            Handler mHandler = new Handler()
            {                       
              public void  handleMessage(Message msg)                                       
                  {                                         
                      super.handleMessage(msg); 
                      if(msg.what == 0)
                      {
                         Toast.makeText(getActivity(),recvMessageClient,Toast.LENGTH_SHORT).show();//刷新消息机制
                      }
                      else if(msg.what == 1)
                      {
                        try
                        {

                             ////  String  result = recvMessageClient;
                               // Toast.makeText(getActivity(),result,Toast.LENGTH_SHORT).show(); //接收消息的
                              String [] results = recvMessageClient.split("\\.");;
                              // Toast.makeText(getActivity(),results[3],Toast.LENGTH_SHORT).show(); //接收消息的 
                                /* 

                                Intent intent=new Intent();
                                intent.putExtra("temp",results[0]);
                                intent.putExtra("humi",results[2]);
                                intent.setAction("zcd.netanything.temp");
                                 getActivity().sendBroadcast(intent);
                                   */


                        }catch(Exception e)
                        {
                            // Toast.makeText(getActivity(),"无法获取数据，检查网络是否连接！",Toast.LENGTH_SHORT).show();//刷新消息机制
                        }
                      }
                  }                                 
             };
         //接收处理
        private String getInfoBuff(char[] buff, int count)
                    {
                        char[] temp = new char[count];
                        for(int i=0; i<count; i++)
                        {
                            temp[i] = buff[i];

                        }   

                         return new String(temp);
                    }
        /*public void onDestroy() {
            super.onDestroy();
            if (isConnect) 
            {               
                isConnect = false;
                try {
                    if(mSocketClient!=null)
                    {
                        mSocketClient.close();
                        mSocketClient = null;
                        //mThreadvideo.destroy();
                        mPrintWriterClient.close();
                        mPrintWriterClient = null;
                        recvMessageClient = "网络端口成功";//消息换行
                        Message msg = new Message();
                        msg.what = 0;
                        mHandler.sendMessage(msg);
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
                mThreadClient.interrupt();
            }

        }
        */

按键触发，开启线程：

  public void onClick(View v) {
        // TODO Auto-generated method stub
        switch(v.getId()){
        case R.id.button1:
            mPrintWriterClient.print("f");
            //mPrintWriterClient.print("t");
            mPrintWriterClient.flush();//清空
         Toast.makeText(getActivity(),"前进",Toast.LENGTH_SHORT).show();
         break;
        case R.id.button2:
             mPrintWriterClient.print("b");
            // mPrintWriterClient.print("t");
             mPrintWriterClient.flush();
             Toast.makeText(getActivity(),"后退",Toast.LENGTH_SHORT).show();

            break;
        case R.id.button3:
            mPrintWriterClient.print("l");
        //  mPrintWriterClient.print("t");
            mPrintWriterClient.flush();
            Toast.makeText(getActivity(),"向左",Toast.LENGTH_SHORT).show();
            break;
        case R.id.button4:
            mPrintWriterClient.print("r");
        //  mPrintWriterClient.print("t");
            mPrintWriterClient.flush();  
            Toast.makeText(getActivity(),"向右",Toast.LENGTH_SHORT).show();
            break;
        case R.id.button5:
             if(!isConnect)
          {
            //开启mThreadClient线程
            mThreadClient = new Thread(mRunnable);
            mThreadClient.start(); 
           Toast.makeText(getActivity(),"尝试连接网络",500).show();
          }
          else {
              onDestroy();
              isConnect=false;

             }

            break;
        //case R.id.button6:
            //关闭wifi
        /*  if (isConnect) 
            {               
                isConnect = false;
                try {
                    if(mSocketClient!=null)
                    {
                        mSocketClient.close();
                        mSocketClient = null;
                        //mThreadvideo.destroy();
                        mPrintWriterClient.close();
                        mPrintWriterClient = null;
                        recvMessageClient = "网络端口成功";//消息换行
                        Message msg = new Message();
                        msg.what = 0;
                        mHandler.sendMessage(msg);
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
                mThreadClient.interrupt();
            }
             */
            //   break;
        }
    }