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...

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？

详细代码介绍：

博文来源：/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("anything.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 stubswitch(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; } }

项目演示：

APP控制小车视频演示

APP物联系统视频演示

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