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new AsyncTask subclass to fetch public rooms list from relay

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Andy2 2010-09-28 06:47:58 -07:00
parent 89d20578b8
commit 132321c9fd
1 changed files with 111 additions and 0 deletions
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xwords4/android/XWords4/src/org/eehouse/android/xw4/RefreshNamesTask.java Normal file
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/* -*- compile-command: "cd ../../../../../; ant install"; -*- */
/*
* Copyright 2009-2010 by Eric House (xwords@eehouse.org). All
* rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package org.eehouse.android.xw4;
import android.os.AsyncTask;
import android.content.Context;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import java.io.InputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.util.ArrayList;
import java.net.Socket;
public class RefreshNamesTask extends AsyncTask<Void, Void, String[]> {
private Context m_context;
private Spinner m_resultSpinner;
private int m_lang;
private int m_nInGame;
public RefreshNamesTask( Context context, int lang, int nInGame,
Spinner getsResults )
{
super();
m_context = context;
m_resultSpinner = getsResults;
m_lang = lang;
m_nInGame = nInGame;
}
protected String[] doInBackground( Void...unused )
{
ArrayList<String> names = new ArrayList<String>();
Utils.logf( "doInBackground()" );
try {
Socket socket = NetUtils.MakeProxySocket( m_context, 3000 );
DataOutputStream outStream =
new DataOutputStream( socket.getOutputStream() );
outStream.writeShort( 4 ); // total packet length
outStream.writeByte( NetUtils.PROTOCOL_VERSION );
outStream.writeByte( NetUtils.PRX_PUB_ROOMS );
outStream.writeByte( (byte)m_lang );
outStream.writeByte( (byte)m_nInGame );
outStream.flush();
// read result -- will block
DataInputStream dis =
new DataInputStream(socket.getInputStream());
short len = dis.readShort();
short nRooms = dis.readShort();
Utils.logf( "%s: got %d rooms", "doInBackground", nRooms );
// Can't figure out how to read a null-terminated string
// from DataInputStream so parse it myself.
byte[] bytes = new byte[len];
dis.read( bytes );
int index = -1;
for ( int ii = 0; ii < nRooms; ++ii ) {
int lastIndex = ++index; // skip the null
while ( bytes[index] != '\n' ) {
++index;
}
String name = new String( bytes, lastIndex, index - lastIndex );
Utils.logf( "got public room name: %s", name );
int indx = name.lastIndexOf("/");
names.add( name.substring(0, indx ) );
}
} catch ( java.io.IOException ioe ) {
Utils.logf( "%s", ioe.toString() );
}
Utils.logf( "doInBackground() returning" );
return names.toArray( new String[names.size()] );
}
// protected void onProgressUpdate(Integer... progress) {
// setProgressPercent(progress[0]);
// }
protected void onPostExecute( String[] result )
{
Utils.logf( "onPostExecute()" );
ArrayAdapter<String> adapter =
new ArrayAdapter<String>( m_context,
android.R.layout.simple_spinner_item,
result );
m_resultSpinner.setAdapter( adapter );
Utils.logf( "onPostExecute() done" );
}
}