NetworkOnMainThreadException錯誤

-4

當運行該行 echoSocket = new Socket(serverHostname, 10008);我的應用程序崩潰，出現錯誤，NetworkOnMainThreadException錯誤。NetworkOnMainThreadException錯誤

從我所看到的這與試圖在UI線程上運行套接字有關。所以我怎麼能改變我的代碼（下），所以它的作品？

import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStreamReader; 
import java.io.PrintWriter; 
import java.net.Socket; 
import java.net.UnknownHostException; 

import android.support.v7.app.ActionBarActivity; 
import android.support.v7.app.ActionBar; 
import android.support.v4.app.Fragment; 
import android.os.Bundle; 
import android.view.LayoutInflater; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.TextView; 
import android.os.Build; 

public class MainActivity extends ActionBarActivity { 

    Button Bgo; 
    private static TextView TV1; 
    EditText Text; 
    String userInput; 
    Socket echoSocket = null; 
    PrintWriter out = null; 
    BufferedReader in = null; 
    String Responce = null; 
    String serverHostname; 
    int section = 0; 
    Boolean keepgoing = true; 
    Boolean g1o = true; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     Bgo = (Button) findViewById(R.id.Go); 
     TV1 = (TextView) findViewById(R.id.tv1); 
     Text = (EditText) findViewById(R.id.Inputtext); 
     onclick(); 
    } 

    public void send() { 

     // System.out.println("type the host name"); ->>updating 
     // serverHostname = new String(stdIn.readLine()); 

     serverHostname = new String("192.168.1.105"); 
     System.out.println("Attemping to connect to host " + serverHostname 
       + " on port 10008."); 

     try { 
      echoSocket = new Socket(serverHostname, 10008); 
      out = new PrintWriter(echoSocket.getOutputStream(), true); 
      in = new BufferedReader(new InputStreamReader(
        echoSocket.getInputStream())); 

     } catch (UnknownHostException e) { 
      TV1.setText("Don't know about host: " + serverHostname); 
     } catch (IOException e) { 
      TV1.setText("Couldn't get I/O for " + "the connection to: " 
        + serverHostname); 
     } 

     TV1.setText("type VIEW-LOG for last 5 enteries (newset first) or DC to dissconect"); 
    } 

    public void onclick() { 
     Bgo.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       if (g1o = true) { 
        TV1.setText("conecting"); 
        g1o = false; 
        send(); 
       } else { 
        userInput = Text.getText().toString(); 
        try { 
         if (userInput.equals("VIEW-LOG")) { 
          out.println(userInput); 
          int i = 0; 
          while (i < 5) { 

           Responce = in.readLine(); 

           System.out.println(Responce);//this will be replace once this is working 
           i++; 
          } 
         } else if (userInput.equals("DC")) { 
          keepgoing = false; 
          System.out.println("dc"); 
          out.println(userInput); 
         } else { 
          out.println(userInput); 

          System.out.println(in.readLine()); 

         } 
        } catch (IOException e) { 

        } 

       } 
      } 
     }); 
    } 

    public void Close() { 

     try { 
      out.close(); 
      in.close(); 
      echoSocket.close(); 
     } catch (IOException e) { 

     } 
    } 
}

XML：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:orientation="vertical" > 

    <TextView 
     android:id="@+id/tv1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="PlaceHolder" 
     android:textAppearance="?android:attr/textAppearanceLarge" /> 

    <EditText 
     android:id="@+id/Inputtext" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:ems="10" > 

     <requestFocus /> 
    </EditText> 

    <Button 
     android:id="@+id/Go" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="Go" /> 

</LinearLayout>

什麼這個劑量：一個一個按下按鈕它運行發送（）;這使得連接到服務器。當它再次按下時，它將edittext中的測試發送到服務器，如果它是DC，它會從服務器中刪除，如果是VIEW-LOG，則服務器發送5個字符串

來源

2014-05-09 Tom Hazell

有在等這多個答案，使用異步任務來完成網絡請求。我會建議在提問之前檢查其他答案。 – Libin

[非常相關]（https://www.google.com/search?q=networkonmainthreadexception&oq=NetworkOnMain&aqs=chrome.1.69i57j0l5.6273j0j8&sourceid=chrome&es_sm=122&ie=UTF-8） – codeMagic

輕鬆搜索。 –