java– 使用AsyncTask进行android网络连接

概述我在使用AsyncTask时遇到了一些麻烦,因为我之前从未遇到过它并且不知道我在做什么.基本上我得到一个力量关闭,因为我试图在主类上运行连接.有人可能会帮助我在代码中添加AsyncTask：packagecom.smarte.smartipcontrol;importjava.io.BufferedReader;importjava.io.BufferedW

我在使用AsyncTask时遇到了一些麻烦,因为我之前从未遇到过它并且不知道我在做什么.

基本上我得到一个力量关闭,因为我试图在主类上运行连接.有人可能会帮助我在代码中添加AsyncTask：

package com.smarte.smartipcontrol;import java.io.BufferedReader;import java.io.BuffereDWriter;import java.io.IOException;import java.io.inputStreamReader;import java.io.OutputStreamWriter;import java.io.PrintWriter;import java.net.InetAddress;import java.net.socket;import java.net.UnkNownHostException;import androID.app.Activity;import androID.content.Intent;import androID.os.Bundle;import androID.vIEw.VIEw;public class IPControl extends Activity {  private Socket socket;  private String serverIpAddress;  private static final int REDIRECTED_SERVERPORT = 32;  public PrintWriter out;  public BufferedReader in ;    @OverrIDe      public voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        // Get the message from the intent        Intent intent = getIntent();        serverIpAddress = intent.getStringExtra(IPEntry.ACTUALSMARTIP);        createConnection();      }  public voID getModel(VIEw vIEw) {    try {      out.println("[m\r\n");      //System.out.print("root\r\n");      while (! in .ready());      String textStatus = readBuffer();    } catch (IOException e) {}  }  public voID createConnection() {    try {      InetAddress serverAddr = InetAddress.getByname(serverIpAddress);      socket = new Socket(serverAddr, REDIRECTED_SERVERPORT);    } catch (UnkNownHostException e1) {      e1.printstacktrace();    } catch (IOException e1) {      e1.printstacktrace();    }    try {      out = new PrintWriter(new BuffereDWriter(new OutputStreamWriter(socket.getoutputStream())), true); in = new BufferedReader(new inputStreamReader(socket.getinputStream()));      while (! in .ready());      readBuffer();      out.println("root\r\n");      //System.out.print("root\r\n");      while (! in .ready());      readBuffer();      out.println("root\r\n");      //System.out.print("root\r\n");      while (! in .ready());      readBuffer();    } catch (IOException e) {}    //R.ID.textStatus  }  private String readBuffer() throws IOException {    String msg = "";    while ( in .ready()) {      msg = msg + (char) in .read();    }    //System.out.print(msg);    if (msg.indexOf("SNX_COM> ") != -1) return msg.substring(0, msg.indexOf("SNX_COM> "));    else return msg;  }}

解决方法:

只是一个关于migtht如何的简单示例：

public class IPControl extends Activity {    private ProgressDialog pd = null;    private String data = null;    private Socket socket;    private String serverIpAddress;    private static final int REDIRECTED_SERVERPORT = 32;    public PrintWriter out;    public BufferedReader in ;    @OverrIDe    public voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentVIEw(R.layout.main);        try{               this.pd = ProgressDialog.show(this, "Loading..", "Please Wait...", true, false);            new AsyncAction().execute();        }catch (Exception e) {            e.printstacktrace();        }    }    private class AsyncAction extends AsyncTask<String, VoID, String> {        protected VoID doInBackground(String... args) {             try {                InetAddress serverAddr = InetAddress.getByname(serverIpAddress);                socket = new Socket(serverAddr, REDIRECTED_SERVERPORT);            } catch (UnkNownHostException e1) {                e1.printstacktrace();            } catch (IOException e1) {                e1.printstacktrace();            }            try {                out = new PrintWriter(new BuffereDWriter(new OutputStreamWriter(socket.getoutputStream())), true);                in = new BufferedReader(new inputStreamReader(socket.getinputStream()));                while (! in.ready());                readBuffer();                out.println("root\r\n");                //System.out.print("root\r\n");                while (! in .ready());                readBuffer();                out.println("root\r\n");                //System.out.print("root\r\n");                while (! in .ready());                String msg = "";                while (in.ready()) {                    msg = msg + (char) in .read();                }            } catch (IOException e) {}        return null;//returns what you want to pass to the onPostExecute()    }    protected voID onPostExecute(String result) {        //resultis the data returned from doInbackground        IPControl.this.data = result;        if (IPControl.this.pd != null) {            IPControl.this.pd.dismiss();        }    } }

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