代碼爲android和pc之間的TCP/IP連接，但不能建立它們之間的連接，所以我如何連接它們？

Question

這裏是Android手機和PC之間的TCP連接的代碼，但是我不能夠連接並無法從Android的發送串PC ...任何建議

客戶端編程

package com.exercise.AndroidClient; 
import java.io.DataInputStream; 
import java.io.DataOutputStream; 
import java.io.IOException; 
import java.net.Socket; 
import java.net.UnknownHostException; 

import android.app.Activity; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.TextView; 

public class AndroidClient extends Activity { 

EditText textOut; 
TextView textIn; 

/** Called when the activity is first created. */ 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 

    textOut = (EditText)findViewById(R.id.textout); 
    Button buttonSend = (Button)findViewById(R.id.send); 
    textIn = (TextView)findViewById(R.id.textin); 
    buttonSend.setOnClickListener(buttonSendOnClickListener); 
} 

Button.OnClickListener buttonSendOnClickListener 
= new Button.OnClickListener(){ 

@Override 
public void onClick(View arg0) { 
// TODO Auto-generated method stub 
Socket socket = null; 
DataOutputStream dataOutputStream = null; 
DataInputStream dataInputStream = null; 

try { 
    socket = new Socket("192.168.1.101", 8888); 
    dataOutputStream = new DataOutputStream(socket.getOutputStream()); 
    dataInputStream = new DataInputStream(socket.getInputStream()); 
    dataOutputStream.writeUTF(textOut.getText().toString()); 
    textIn.setText(dataInputStream.readUTF()); 
} catch (UnknownHostException e) { 
    // TODO Auto-generated catch block 
    e.printStackTrace(); 
} catch (IOException e) { 
    // TODO Auto-generated catch block 
    e.printStackTrace(); 
} 
finally{ 
    if (socket != null){ 
    try { 
    socket.close(); 
    } catch (IOException e) { 
    // TODO Auto-generated catch block 
    e.printStackTrace(); 
    } 
    } 

    if (dataOutputStream != null){ 
    try { 
    dataOutputStream.close(); 
    } catch (IOException e) { 
    // TODO Auto-generated catch block 
    e.printStackTrace(); 
    } 
    } 

    if (dataInputStream != null){ 
    try { 
    dataInputStream.close(); 
    } catch (IOException e) { 
    // TODO Auto-generated catch block 
    e.printStackTrace(); 
    } 
    } 
} 
}}; 
} 

服務器端編程

import java.io.DataInputStream; 
import java.io.DataOutputStream; 
import java.io.IOException; 
import java.net.ServerSocket; 
import java.net.Socket; 


public class MyServer { 

public static void main(String[] args){ 
    ServerSocket serverSocket = null; 
    Socket socket = null; 
    DataInputStream dataInputStream = null; 
    DataOutputStream dataOutputStream = null; 

    try { 
    serverSocket = new ServerSocket(8888); 
    System.out.println("Listening :8888"); 
    } catch (IOException e) { 
    // TODO Auto-generated catch block 
    e.printStackTrace(); 
    } 

    while(true){ 
    try { 
    socket = serverSocket.accept(); 
    dataInputStream = new DataInputStream(socket.getInputStream()); 
    dataOutputStream = new DataOutputStream(socket.getOutputStream()); 
    System.out.println("ip: " + socket.getInetAddress()); 
    System.out.println("message: " + dataInputStream.readUTF()); 
    dataOutputStream.writeUTF("Hello!"); 
    } catch (IOException e) { 
    // TODO Auto-generated catch block 
    e.printStackTrace(); 
    } 
    finally{ 
    if(socket!= null){ 
    try { 
     socket.close(); 
    } catch (IOException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 
    } 

    if(dataInputStream!= null){ 
    try { 
     dataInputStream.close(); 
    } catch (IOException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 
    } 

    if(dataOutputStream!= null){ 
    try { 
     dataOutputStream.close(); 
    } catch (IOException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 
    } 
    } 
    } 
} 
} 

Answer 1

首先，你需要檢查的權限在AndroidManifest.xml（又見INT貓記錄，通過你的Android扔異常是一樣的東西更多鈔票權限被拒絕，上網。 ）。 這些都是權限的AndroidManifest.xml：

<uses-permission android:name="android.permission.INTERNET" > 
</uses-permission> 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" > 
</uses-permission> 

欲瞭解更多信息，請參閱example on javacodegeeks。