Android的接收，并通过wifi连接硬件发送数据

本文介绍了Android的接收，并通过wifi连接硬件发送数据的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

其实我想从一个硬件一块数据发送到Android设备。 所述硬件装置被连接到被连接到调制解调器的本地无线路由器。 Android设备也将连接到同一台路由器通过Wi-Fi。 能否请你建议我从哪里可以得到的想法如何建立硬件设备的Andr​​oid设备之间的通信通过Wi-Fi，请您及时发送和接收数据帮助一些链接或教程任何样品code或链接

解决方案

进口java.io.BufferedInputStream中; 进口的java.io.File; 进口java.io.FileInputStream中; 进口java.io.IOException异常; 进口java.io.OutputStream中; 进口的java.Socket; 进口的java.UnknownHostException; 进口android.app.Activity; 进口android.os.Bundle; 进口android.view.View; 进口android.widget.Button; 进口android.widget.TextView; 公共类SimpleClientActivity延伸活动{  私人客户端的Socket;  私人的FileInputStream的FileInputStream;  私人的BufferedInputStream的BufferedInputStream;  私人的OutputStream的OutputStream;  私人Button按钮;  私人TextView的文字;  @覆盖  公共无效的onCreate（包savedInstanceState）{   super.onCreate（savedInstanceState）;   的setContentView（R.layout.main）;   按钮=（按钮）findViewById（R.id.button1）; //参照发送按钮   文=（TextView的）findViewById（R.id.textView1）; //参考文本视图   //按钮preSS事件监听器   button.setOnClickListener（新View.OnClickListener（）{    公共无效的onClick（视图v）{     档案文件=新的文件（到/ mnt / SD卡/ input.jpg）; //创建文件的情况下，文件传输或任何数据     尝试 {      客户端=新的Socket（10.0.2.2，4444）;乌拉圭回合的硬件设备// IP地址和端口号      byte []的mybytearray =新的字节[（INT）file.length（）]; //创建一个字节数组到文件      的FileInputStream =新的FileInputStream（文件）;      的BufferedInputStream =新的BufferedInputStream（的FileInputStream）;      bufferedInputStream.read（mybytearray，0，mybytearray.length）; //读取文件      的OutputStream = client.getOutputStream（）;      outputStream.write（mybytearray，0，mybytearray.length）; //写文件以由字节输出流字节      outputStream.flush（）;      bufferedInputStream.close（）;      outputStream.close（）;            client.close（）;            text.setText（文件已发送）;     }赶上（UnknownHostException异常E）{      e.printStackTrace（）;     }赶上（IOException异常E）{      e.printStackTrace（）;     }    }   }）;  } }

//发送消息u还可以使用下面code

公共静态字符串ip地址; // UR IP     公共静态INT端口号; //端口号     私人客户端的Socket;     私人OutputStreamWriter PrintWriter的;     私人字符串信息; 新主题（新的Runnable（）{                     @覆盖                     公共无效的run（）{                         // TODO自动生成方法存根                         尝试 {                             客户端=新的Socket（ip地址，端口号）;                             PrintWriter的=新OutputStreamWriter（客户端                                     .getOutputStream（），ISO-8859-1）;                             printwriter.write（任何消息）;                             printwriter.flush（）;                             printwriter.close（）;                             client.close（）;                         }                         赶上（UnknownHostException异常E）{                             e.printStackTrace（）;                         }赶上（IOException异常E）{                             // TODO自动生成的catch块                             e.printStackTrace（）;                         }                     }                 }）。开始（）;

Actually I want to send data from a hardware piece to an android device. The hardware device is connected to local wireless router which is connected to modem. Android device will also connected to same router through WI-FI. Can you please suggest some links or tutorial from where i can get idea how to establish communication between hardware device an the android device to send and receive data through WI-FI .Please Help any sample code or links

解决方案

import java.io.BufferedInputStream; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.OutputStream; import java.Socket; import java.UnknownHostException; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.TextView; public class SimpleClientActivity extends Activity { private Socket client; private FileInputStream fileInputStream; private BufferedInputStream bufferedInputStream; private OutputStream outputStream; private Button button; private TextView text; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); button = (Button) findViewById(R.id.button1); //reference to the send button text = (TextView) findViewById(R.id.textView1); //reference to the text view //Button press event listener button.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { File file = new File("/mnt/sdcard/input.jpg"); //create file instance, file to transfer or any data try { client = new Socket("10.0.2.2", 4444);// ip address and port number of ur hardware device byte[] mybytearray = new byte[(int) file.length()]; //create a byte array to file fileInputStream = new FileInputStream(file); bufferedInputStream = new BufferedInputStream(fileInputStream); bufferedInputStream.read(mybytearray, 0, mybytearray.length); //read the file outputStream = client.getOutputStream(); outputStream.write(mybytearray, 0, mybytearray.length); //write file to the output stream byte by byte outputStream.flush(); bufferedInputStream.close(); outputStream.close(); client.close(); text.setText("File Sent"); } catch (UnknownHostException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } }); } }

// to send message u can also use below code

public static String ipAddress;// ur ip public static int portNumber;// portnumber private Socket client; private OutputStreamWriter printwriter; private String message; new Thread(new Runnable() { @Override public void run() { // TODO Auto-generated method stub try { client = new Socket(ipAddress, portNumber); printwriter = new OutputStreamWriter(client .getOutputStream(), "ISO-8859-1"); printwriter.write("any message"); printwriter.flush(); printwriter.close(); client.close(); } catch (UnknownHostException e) { e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }).start();