套接字創建造成強制關閉

Question

每當我在android中打開一個套接字時，程序立即強制關閉。下面的代碼：

package com.bensherman.acc; 

import java.io.IOException; 
import java.net.InetAddress; 
import java.net.Socket; 
import java.net.UnknownHostException; 

import android.os.Bundle; 
import android.app.Activity; 
import android.view.Menu; 

public class MainActivity extends Activity { 

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



      try { 
       Socket socket = new Socket("192.168.43.253", 4452); 
      } catch (UnknownHostException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } catch (IOException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } 


    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.main, menu); 
     return true; 
    } 

} 

這裏是我的清單：

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.bensherman.acc" 
    android:versionCode="1" 
    android:versionName="1.0" > 

    <uses-sdk 
     android:minSdkVersion="9" 
     android:targetSdkVersion="14" /> 
    <uses-permission android:name="android.permission.INTERNET"/> 
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/> 
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> 

    <application 
     android:allowBackup="true" 
     android:icon="@drawable/ic_launcher" 
     android:label="@string/app_name" 
     android:theme="@style/AppTheme" > 
     <activity 
      android:name="com.bensherman.acc.MainActivity" 
      android:label="@string/app_name" > 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 

       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
     </activity> 
    </application> 

</manifest> 

這裏的日誌：

05-20 19:26:59.539: E/Trace(26558): error opening trace file: No such file or directory (2) 
05-20 19:26:59.649: D/AndroidRuntime(26558): Shutting down VM 
05-20 19:26:59.649: W/dalvikvm(26558): threadid=1: thread exiting with uncaught exception (group=0x2b545300) 
05-20 19:26:59.669: E/AndroidRuntime(26558): FATAL EXCEPTION: main 
05-20 19:26:59.669: E/AndroidRuntime(26558): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.bensherman.acc/com.bensherman.acc.MainActivity}: android.os.NetworkOnMainThreadException 
05-20 19:26:59.669: E/AndroidRuntime(26558): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2190) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2215) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at android.app.ActivityThread.access$600(ActivityThread.java:145) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1211) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at android.os.Handler.dispatchMessage(Handler.java:99) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at android.os.Looper.loop(Looper.java:137) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at android.app.ActivityThread.main(ActivityThread.java:4978) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at java.lang.reflect.Method.invokeNative(Native Method) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at java.lang.reflect.Method.invoke(Method.java:511) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:558) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at dalvik.system.NativeStart.main(Native Method) 
05-20 19:26:59.669: E/AndroidRuntime(26558): Caused by: android.os.NetworkOnMainThreadException 
05-20 19:26:59.669: E/AndroidRuntime(26558): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:84) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at libcore.io.IoBridge.connectErrno(IoBridge.java:127) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at libcore.io.IoBridge.connect(IoBridge.java:112) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at java.net.Socket.startupSocket(Socket.java:566) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at java.net.Socket.tryAllAddresses(Socket.java:127) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at java.net.Socket.<init>(Socket.java:177) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at java.net.Socket.<init>(Socket.java:149) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at com.bensherman.acc.MainActivity.onCreate(MainActivity.java:22) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at android.app.Activity.performCreate(Activity.java:5008) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079) 
05-20 19:26:59.669: E/AndroidRuntime(26558): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144) 
05-20 19:26:59.669: E/AndroidRuntime(26558): ... 11 more 

有沒有人有一個想法是什麼問題？如果我說Socket socket = new Socket（），那不是問題。我的電腦上運行着一臺服務器，但筆記本電腦和開發設備都通過運行無線系統的電話連接。

Answer 1

那麼試着在Android上搜索更多關於網絡的問題，首先您不允許在最新版本的Android上使用UIThread網絡。其次你正確設置了權限？現在做更多的研究比採用一些糟糕的解決方案更好。

希望這有助於和享受你的工作。