AndroidクライアントソケットIOException

Question

EDIT：問題は、Androidデバイスがサーバーからの応答を受け取るときのClient.classの入力です。これらは、クラッシュの原因となる次の行以下のとおりです。ここで

 InputStream input = client.getInputStream(); 
     BufferedReader reader = new BufferedReader(new InputStreamReader(input)); 

     String text; 

     while ((text = reader.readLine()) != null) { 
      Log.d("ClientLog", "Received from Server"+ text); 
     } 

アンドロイドで私のClient.classです：

public class Client implements Runnable{ 

public Client() { 

} 

@Override 
public void run() { 
    try { 
     Log.d("ClientLog", "Socket creation incoming"); 
     Socket client = new Socket("localhost", 5555); 
     Log.d("ClientLog", "Client has been started"); 

     // Streams: 
     OutputStream out = client.getOutputStream(); 
     BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(client.getOutputStream())); 

     InputStream input = client.getInputStream(); 
     BufferedReader reader = new BufferedReader(new InputStreamReader(input)); 
     // ----------------------------------------------------------------------- 

     writer.write("Test"); 
     writer.newLine(); 
     writer.flush(); 

     String text; 

     while ((text = reader.readLine()) != null) { 
      Log.d("ClientLog", "Received from Server"+ text); 
     } 

     writer.close(); 
     reader.close(); 

    } catch (UnknownHostException e) { 
     Log.d("ClientLog", "Error: Host not found"); 
     e.printStackTrace(); 
    } catch (IOException e) { 
     Log.d("ClientLog", "Error: IOException"); 
     e.printStackTrace(); 
    } 
} 

}

とJavaで私Server.classを必要に応じて：

public class Server { 

public static void main(String[] args) { 

    ExecutorService executor = Executors.newFixedThreadPool(30); 

    ServerSocket server; 
    try { 
     server = new ServerSocket(5555); 
     System.out.println("Server has been started on Port 5555"); 

     while(true) { 
      try { 
       Socket client = server.accept(); 

       //Thread t = new Thread(new Handler(client)); 
       //t.start(); 
       executor.execute(new Handler(client)); 

      } catch (IOException e) { 
       System.out.println("Error IOExceotion"); 
       e.printStackTrace(); 
      } 
     } 

    } catch (IOException e1) { 
     e1.printStackTrace(); 
    } 

} 

Server.classに必要なHandler.class：

public class Handler implements Runnable{ 
private Socket client; 

public Handler(Socket pClient) { 
    client = pClient; 
} 

@Override 
public void run() { 
    try { 
       // Streams: 
       OutputStream out = client.getOutputStream(); 
       PrintWriter writer = new PrintWriter(out); 

       InputStream input = client.getInputStream(); 
       BufferedReader reader = new BufferedReader(new InputStreamReader(input)); 
       // ----------------------------------------------------------------------- 

       String text = null; 

       while ((text = reader.readLine()) != null) { 
        writer.write(text+ "\n"); 
        writer.flush(); 
        System.out.println("Recieved from Client: "+ text); 
       } 

       //Close Streams 
       writer.close(); 
       reader.close(); 

       client.close(); 
    } catch (IOException e) { 
     System.out.println("Error IOException"); 
     e.printStackTrace(); 
    } 
} 

}

Answer 1

デバッグが上記のコメントで解決しました。

ステップ1：ここで説明したようアンドロイドマニフェストファイルへのアクセス権を追加します。Java socket IOException - permission denied

ステップ2：while ((text = reader.readLine()) != null)チェックを変更します。私はtext = reader.readLine() != nullチェックに問題があったと思います。