使用library: https://github.com/tavendo/AutobahnAndroid

import com.fkapp.websocket.R;     import de.tavendo.autobahn.WebSocketConnection;  import de.tavendo.autobahn.WebSocketException;  import de.tavendo.autobahn.WebSocketHandler;     import android.support.v7.app.ActionBarActivity;  import android.os.Bundle;  import android.os.Handler;  import android.os.Message;  import android.view.Menu;  import android.view.MenuItem;  import android.view.View;  import android.widget.Button;  import android.widget.Toast;     public class MainActivity extends ActionBarActivity {      private final String      TAG = "MainActivity";      public static String      wsUrl   = "ws://ip:port/chat"; /* TODO: 运行时替换ip port */      public WebSocketConnection wsC = new WebSocketConnection();         public Handler handler = new Handler()      {          @Override          public void handleMessage( Message msg )          {              super.handleMessage( msg );              if ( msg.what == 0 )              {              }          }      };         public void toastLog( String s )      {          Toast.makeText( this, s, Toast.LENGTH_SHORT ).show();      }            private void wsStart()      {          try {              wsC.connect( wsUrl, new WebSocketHandler()                       {                           @Override                           public void onOpen()                           {                               toastLog( "Status: Connected to " + wsUrl );                               wsC.sendTextMessage( "Hello, world!" );                           }                              @Override                           public void onTextMessage( String payload )                           {                               toastLog( "Got echo: " + payload );                           }                              @Override                           public void onClose( int code, String reason )                           {                               toastLog( "Connection lost." );                           }                       } );          } catch ( WebSocketException e ) {              e.printStackTrace();          }      }            @Override      protected void onCreate( Bundle savedInstanceState )      {          super.onCreate( savedInstanceState );          setContentView( R.layout.activity_main );             wsStart();             Button wsSend = (Button) findViewById( R.id.wsSend );          wsSend.setOnClickListener( new View.OnClickListener()                          {                              @Override                              public void onClick( View v )                              {                                  wsC.sendTextMessage( "ooxx" );                              }                          } );      }            @Override      protected void onDestroy()      {          super.onDestroy();          if ( wsC.isConnected() )          {              wsC.disconnect();          }      }            @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);      }            @Override      public boolean onOptionsItemSelected( MenuItem item )      {          /*           * Handle action bar item clicks here. The action bar will           * automatically handle clicks on the Home/Up button, so long           * as you specify a parent activity in AndroidManifest.xml.           */          int id = item.getItemId();          if ( id == R.id.action_settings )          {              return(true);          }          return(super.onOptionsItemSelected( item ) );      }  }