可連接插座的Android

Question

我在一個學校項目試圖將Android應用程序連接到該給我們一個小時的服務器，但是當我嘗試將套接字連接到我的應用程序我得到一個錯誤：

這是MainActivity.java的代碼

public void ejecutar(View view) throws UnknownHostException,IOException{ 


    InetAddress direServidor =InetAddress.getByName("192.168.1.68"); 
    Socket socket=new Socket(direServidor, 1000); 
    System.out.println("Si me presionaron"); 
    InputStream is=socket.getInputStream(); 
    BufferedReader br= new BufferedReader (new InputStreamReader (is)); 
    EditText et = (EditText)findViewById(R.id.fecha); 
    et.setText(br.readLine()); 
    br.close(); 
    socket.close(); 

} 

它只是功能。

我已經在manifest.xml中

配置的權限

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

但似乎沒有任何工作！

的logcat：

> 02-19 00:26:27.044: E/AndroidRuntime(16758): FATAL EXCEPTION: main 
> 02-19 00:26:27.044: E/AndroidRuntime(16758): Process: 
> com.example.clientehora, PID: 16758 02-19 00:26:27.044: 
> E/AndroidRuntime(16758): java.lang.IllegalStateException: Could not 
> execute method of the activity 02-19 00:26:27.044: 
> E/AndroidRuntime(16758): at 
> android.view.View$1.onClick(View.java:3823) 02-19 00:26:27.044: 
> E/AndroidRuntime(16758): at 
> android.view.View.performClick(View.java:4438) 02-19 00:26:27.044: 
> E/AndroidRuntime(16758): at 
> android.view.View$PerformClick.run(View.java:18422) 02-19 
> 00:26:27.044: E/AndroidRuntime(16758): at 
> android.os.Handler.handleCallback(Handler.java:733) 02-19 
> 00:26:27.044: E/AndroidRuntime(16758): at 
> android.os.Handler.dispatchMessage(Handler.java:95) 02-19 
> 00:26:27.044: E/AndroidRuntime(16758): at 
> android.os.Looper.loop(Looper.java:136) 02-19 00:26:27.044: 
> E/AndroidRuntime(16758): at 
> android.app.ActivityThread.main(ActivityThread.java:5017) 02-19 
> 00:26:27.044: E/AndroidRuntime(16758): at 
> java.lang.reflect.Method.invokeNative(Native Method) 02-19 
> 00:26:27.044: E/AndroidRuntime(16758): at 
> java.lang.reflect.Method.invoke(Method.java:515) 02-19 00:26:27.044: 
> E/AndroidRuntime(16758): at 
> com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 
> 02-19 00:26:27.044: E/AndroidRuntime(16758): at 
> com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 02-19 
> 00:26:27.044: E/AndroidRuntime(16758): at 
> dalvik.system.NativeStart.main(Native Method) 02-19 00:26:27.044: 
> E/AndroidRuntime(16758): Caused by: 
> java.lang.reflect.InvocationTargetException 02-19 00:26:27.044: 
> E/AndroidRuntime(16758): at 
> java.lang.reflect.Method.invokeNative(Native Method) 02-19 
> 00:26:27.044: E/AndroidRuntime(16758): at 
> java.lang.reflect.Method.invoke(Method.java:515) 02-19 00:26:27.044: 
> E/AndroidRuntime(16758): at 
> android.view.View$1.onClick(View.java:3818) 02-19 00:26:27.044: 
> E/AndroidRuntime(16758): ... 11 more 02-19 00:26:27.044: 
> E/AndroidRuntime(16758): Caused by: 
> android.os.NetworkOnMainThreadException 02-19 00:26:27.044: 
> E/AndroidRuntime(16758): at 
> android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1145) 
> 02-19 00:26:27.044: E/AndroidRuntime(16758): at 
> libcore.io.BlockGuardOs.connect(BlockGuardOs.java:84) 02-19 
> 00:26:27.044: E/AndroidRuntime(16758): at 
> libcore.io.IoBridge.connectErrno(IoBridge.java:127) 02-19 
> 00:26:27.044: E/AndroidRuntime(16758): at 
> libcore.io.IoBridge.connect(IoBridge.java:112) 02-19 00:26:27.044: 
> E/AndroidRuntime(16758): at 
> java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192) 02-19 
> 00:26:27.044: E/AndroidRuntime(16758): at 
> java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) 02-19 
> 00:26:27.044: E/AndroidRuntime(16758): at 
> java.net.Socket.startupSocket(Socket.java:567) 02-19 00:26:27.044: 
> E/AndroidRuntime(16758): at java.net.Socket.<init>(Socket.java:226) 
> 02-19 00:26:27.044: E/AndroidRuntime(16758): at 
> com.example.clientehora.MainActivity.ejecutar(MainActivity.java:37) 

Answer 1

你需要在一個單獨的線程，以完成此操作運行插座，關閉主線程。原因是在主線程上執行這種繁重的活動可能會鎖定應用程序並導致其崩潰。

public void ejecutar(View view) throws UnknownHostException,IOException{ 
    new Thread(new Runnable(){ 
     InetAddress direServidor = InetAddress.getByName("192.168.1.68"); 
     Socket socket = new Socket(direServidor, 1000); 
     System.out.println("Si me presionaron"); 
     InputStream is = socket.getInputStream(); 
     BufferedReader br = new BufferedReader (new InputStreamReader (is)); 
     EditText et = (EditText)findViewById(R.id.fecha); 
     et.setText(br.readLine()); 
     br.close(); 
     socket.close(); 
    }).start(); 
} 

給一個旋轉。