Android-приложение не может подключиться к серверу

Question

Я пытаюсь написать приложение для Android, которое подключается к серверу, который я написал в java. Вот мой код (который вызывается при нажатии кнопки):

package me.nrubin29.quiz.student; 

import android.app.Activity; 
import android.widget.Toast; 

import java.io.EOFException; 
import java.io.ObjectInputStream; 
import java.io.ObjectOutputStream; 
import java.net.Socket; 

public class Connection { 

    private Socket socket; 
    private Thread reader; 
    private ObjectInputStream inputStream; 
    private ObjectOutputStream outputStream; 

    public void initConnection(final Activity activity, String ip, String port, String name) { 
     try { 
      Toast.makeText(activity.getApplicationContext(), "Starting connection to " + ip + ":" + Integer.parseInt(port), Toast.LENGTH_SHORT).show(); 

      socket = new Socket(ip, Integer.parseInt(port)); 

      Toast.makeText(activity.getApplicationContext(), "Connected!", Toast.LENGTH_SHORT).show(); 

      outputStream = new ObjectOutputStream(socket.getOutputStream()); 

      inputStream = new ObjectInputStream(socket.getInputStream()); 

      outputStream.writeObject(name); 

      reader = new Thread(new Runnable() { 
       public void run() { 
        while (true) { 
         try { 
          Object in = inputStream.readObject(); 
          System.out.println(in); 
         } 
         catch (EOFException e) { Toast.makeText(activity.getApplicationContext(), e.getMessage(), Toast.LENGTH_SHORT).show(); } 
         catch (Exception e) { e.printStackTrace(); } 
        } 
       } 
      }); 

      reader.start(); 
     } 
     catch (Exception e) { e.printStackTrace(); } 
    } 
} 

Отображается первый тост (с правильным портом и IP), но второй один никогда не приходит. И телефон, и компьютер подключены к одной сети, и я определенно использую правильный внутренний IP и порт с сервера.

Извините, если это спорный вопрос, я очень новичок в этом.

UPDATE:

Похоже, там это ошибка. Вот оно:

09-23 01:00:00.963: WARN/System.err(890): java.net.SocketException: socket failed: EACCES (Permission denied) 
09-23 01:00:00.963: WARN/System.err(890): at libcore.io.IoBridge.socket(IoBridge.java:583) 
09-23 01:00:00.963: WARN/System.err(890): at java.net.PlainSocketImpl.create(PlainSocketImpl.java:201) 
09-23 01:00:00.972: WARN/System.err(890): at java.net.Socket.startupSocket(Socket.java:559) 
09-23 01:00:00.972: WARN/System.err(890): at java.net.Socket.tryAllAddresses(Socket.java:127) 
09-23 01:00:00.972: WARN/System.err(890): at java.net.Socket.<init>(Socket.java:177) 
09-23 01:00:00.972: WARN/System.err(890): at java.net.Socket.<init>(Socket.java:149) 
09-23 01:00:00.972: WARN/System.err(890): at me.nrubin29.quiz.student.Connection.initConnection(Connection.java:22) 
09-23 01:00:00.972: WARN/System.err(890): at me.nrubin29.quiz.student.Main$1.onClick(Main.java:35) 
09-23 01:00:00.983: WARN/System.err(890): at android.view.View.performClick(View.java:4204) 
09-23 01:00:00.983: WARN/System.err(890): at android.view.View$PerformClick.run(View.java:17355) 
09-23 01:00:00.983: WARN/System.err(890): at android.os.Handler.handleCallback(Handler.java:725) 
09-23 01:00:00.983: WARN/System.err(890): at android.os.Handler.dispatchMessage(Handler.java:92) 
09-23 01:00:00.983: WARN/System.err(890): at android.os.Looper.loop(Looper.java:137) 
09-23 01:00:00.993: WARN/System.err(890): at android.app.ActivityThread.main(ActivityThread.java:5041) 
09-23 01:00:00.993: WARN/System.err(890): at java.lang.reflect.Method.invokeNative(Native Method) 
09-23 01:00:00.993: WARN/System.err(890): at java.lang.reflect.Method.invoke(Method.java:511) 
09-23 01:00:00.993: WARN/System.err(890): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
09-23 01:00:01.003: WARN/System.err(890): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
09-23 01:00:01.003: WARN/System.err(890): at dalvik.system.NativeStart.main(Native Method) 
09-23 01:00:01.013: WARN/System.err(890): Caused by: libcore.io.ErrnoException: socket failed: EACCES (Permission denied) 
09-23 01:00:01.013: WARN/System.err(890): at libcore.io.Posix.socket(Native Method) 
09-23 01:00:01.013: WARN/System.err(890): at libcore.io.BlockGuardOs.socket(BlockGuardOs.java:181) 
09-23 01:00:01.023: WARN/System.err(890): at libcore.io.IoBridge.socket(IoBridge.java:568) 
09-23 01:00:01.023: WARN/System.err(890): ... 18 more 

UPDATE TWO:

Вот мой AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
      package="me.nrubin29.quiz.student" 
      android:versionCode="1" 
      android:versionName="1.0"> 
    <uses-sdk android:minSdkVersion="15"/> 
    <uses-permission android:name="android.permission.INTERNET"/> 
    <application android:label="@string/app_name" android:icon="@drawable/ic_launcher" android:name=".App"> 
     <activity android:name="Main" 
        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> 

А вот еще одна новая ошибка:

09-23 01:17:00.618: WARN/System.err(1109): android.os.NetworkOnMainThreadException 
09-23 01:17:00.638: WARN/System.err(1109): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117) 
09-23 01:17:00.638: WARN/System.err(1109): at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:84) 
09-23 01:17:00.648: WARN/System.err(1109): at libcore.io.IoBridge.connectErrno(IoBridge.java:127) 
09-23 01:17:00.648: WARN/System.err(1109): at libcore.io.IoBridge.connect(IoBridge.java:112) 
09-23 01:17:00.648: WARN/System.err(1109): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192) 
09-23 01:17:00.648: WARN/System.err(1109): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) 
09-23 01:17:00.668: WARN/System.err(1109): at java.net.Socket.startupSocket(Socket.java:566) 
09-23 01:17:00.668: WARN/System.err(1109): at java.net.Socket.tryAllAddresses(Socket.java:127) 
09-23 01:17:00.668: WARN/System.err(1109): at java.net.Socket.<init>(Socket.java:177) 
09-23 01:17:00.668: WARN/System.err(1109): at java.net.Socket.<init>(Socket.java:149) 
09-23 01:17:00.668: WARN/System.err(1109): at me.nrubin29.quiz.student.Connection.initConnection(Connection.java:22) 
09-23 01:17:00.688: WARN/System.err(1109): at me.nrubin29.quiz.student.Main$1.onClick(Main.java:35) 
09-23 01:17:00.688: WARN/System.err(1109): at android.view.View.performClick(View.java:4204) 
09-23 01:17:00.701: WARN/System.err(1109): at android.view.View$PerformClick.run(View.java:17355) 
09-23 01:17:00.708: WARN/System.err(1109): at android.os.Handler.handleCallback(Handler.java:725) 
09-23 01:17:00.708: WARN/System.err(1109): at android.os.Handler.dispatchMessage(Handler.java:92) 
09-23 01:17:00.719: WARN/System.err(1109): at android.os.Looper.loop(Looper.java:137) 
09-23 01:17:00.719: WARN/System.err(1109): at android.app.ActivityThread.main(ActivityThread.java:5041) 
09-23 01:17:00.738: WARN/System.err(1109): at java.lang.reflect.Method.invokeNative(Native Method) 
09-23 01:17:00.738: WARN/System.err(1109): at java.lang.reflect.Method.invoke(Method.java:511) 
09-23 01:17:00.748: WARN/System.err(1109): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
09-23 01:17:00.748: WARN/System.err(1109): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
09-23 01:17:00.758: WARN/System.err(1109): at dalvik.system.NativeStart.main(Native Method) 
09-23 01:17:00.908: INFO/Choreographer(613): Skipped 71 frames! The application may be doing too much work on its main thread. 

UPDATE 3

Переведен материал подключения к новому потоку, но теперь ничего не происходит, когда я нажимаю на кнопку Готово (первый Тост не отображается):

package me.nrubin29.quiz.student; 

import android.app.Activity; 
import android.widget.Toast; 

import java.io.EOFException; 
import java.io.ObjectInputStream; 
import java.io.ObjectOutputStream; 
import java.net.Socket; 

public class Connection { 

    private Socket socket; 
    private Thread reader; 
    private ObjectInputStream inputStream; 
    private ObjectOutputStream outputStream; 

    public void initConnection(final Activity activity, final String ip, final String port, final String name) { 
     new Thread(new Runnable() { 
      public void run() { 
       try { 
        Toast.makeText(activity.getApplicationContext(), "Starting connection to " + ip + ":" + Integer.parseInt(port), Toast.LENGTH_SHORT).show(); 

        socket = new Socket(ip, Integer.parseInt(port)); 

        Toast.makeText(activity.getApplicationContext(), "Connected!", Toast.LENGTH_SHORT).show(); 

        outputStream = new ObjectOutputStream(socket.getOutputStream()); 

        inputStream = new ObjectInputStream(socket.getInputStream()); 

        outputStream.writeObject(name); 

        reader = new Thread(new Runnable() { 
         public void run() { 
          while (true) { 
           try { 
            Object in = inputStream.readObject(); 
            System.out.println(in); 
           } 
           catch (EOFException e) { Toast.makeText(activity.getApplicationContext(), e.getMessage(), Toast.LENGTH_SHORT).show(); } 
           catch (Exception e) { e.printStackTrace(); } 
          } 
         } 
        }); 

        reader.start(); 
       } 
       catch (Exception e) { e.printStackTrace(); } 
      } 
     }).start(); 
    } 
} 

И, похоже, у нас есть ошибка:

09-23 01:26:12.939: WARN/ActivityManager(308): Unbind failed: could not find connection for android.os.BinderProxy@40f246d0 
09-23 01:26:26.028: WARN/System.err(1276): java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare() 
09-23 01:26:26.028: WARN/System.err(1276): at android.os.Handler.<init>(Handler.java:197) 
09-23 01:26:26.028: WARN/System.err(1276): at android.os.Handler.<init>(Handler.java:111) 
09-23 01:26:26.028: WARN/System.err(1276): at android.widget.Toast$TN.<init>(Toast.java:324) 
09-23 01:26:26.059: WARN/System.err(1276): at android.widget.Toast.<init>(Toast.java:91) 
09-23 01:26:26.059: WARN/System.err(1276): at android.widget.Toast.makeText(Toast.java:238) 
09-23 01:26:26.059: WARN/System.err(1276): at me.nrubin29.quiz.student.Connection$1.run(Connection.java:22) 
09-23 01:26:26.059: WARN/System.err(1276): at java.lang.Thread.run(Thread.java:856) 

Answer 1

В нем говорится: «Разрешение отклонено». У вас есть <uses-permission android:name="android.permission.INTERNET"/> в вашем файле манифеста?

Answer 2

Это исключение связано с тем, что вы пытаетесь показать элемент пользовательского интерфейса (Toast) из фонового потока.

Вам необходимо создать обработчик в потоке пользовательского интерфейса, а затем отправить сообщение handler из run.

что-то вроде этого

В вашем UI потоке:

final Handler handler = new Handler() { 
    @Override 
    public void handleMessage(final Message msgs) { 
    // Show toast here based on your Message.WHAT Parameter. 
    } 
    } 

new Thread(new Runnable() { 
    @Override 
    public void run() { 
    handler.sendEmptyMessage(1); 

    } 
    }).start();