Android Open Source - android-rss Channel Add

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License

The source code is released under:

GNU General Public License

Java Source Code

/*
 * $Id:ChannelAdd.java 87 2007-12-10 06:24:56Z jasta00 $
 *//  w  ww  .  j a va2  s .  c  o m
 * Copyright (C) 2007 Josh Guilfoyle <jasta@devtcg.org>
 *
 * 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, 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.
 */

package org.devtcg.rssreader.activity;

import java.net.MalformedURLException;
import java.net.URL;

import org.devtcg.rssreader.R;
import org.devtcg.rssreader.parser.ChannelRefresh;
import org.devtcg.rssreader.provider.RSSReader;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.ContentUris;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class ChannelAdd extends Activity
{
  private static final String TAG = "ChannelAdd";

  public EditText mURLText;

  /* We need this to not block when accessing the RSS feed for validation
   * and for name downloads. */
  protected ProgressDialog mBusy;  
  final Handler mHandler = new Handler();

  @Override
  protected void onCreate(Bundle icicle)
  {
    super.onCreate(icicle);
    setContentView(R.layout.channel_add);

    mURLText = (EditText)findViewById(R.id.url);
//    mURLText.setKeyListener(new View.OnKeyListener() {
//      public boolean onKey(View v, int keyCode, KeyEvent event)
//      {
//        if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER ||
//            keyCode == KeyEvent.KEYCODE_NEWLINE)
//        {
//          addChannel();
//          return true;
//        }
//
//        return false;
//      }
//    });
    
    Button add = (Button)findViewById(R.id.add);
    add.setOnClickListener(new View.OnClickListener() {
      public void onClick(View v)
      {
        addChannel();
      }
    });
  }

  @Override
  protected void onStart()
  {
    super.onStart();    
  }
  
  private static URL getDefaultFavicon(String rssurl)
  {
    try
    {
      URL orig = new URL(rssurl);

      URL iconUrl = new URL(orig.getProtocol(), orig.getHost(),
        orig.getPort(), "/favicon.ico");
      
      return iconUrl;
    }
    catch (MalformedURLException e)
    {
      /* This shouldn't happen since we've already validated. */
      Log.d(TAG, Log.getStackTraceString(e));
      return null;
    }
  }

  private void addChannel()
  {
    final String rssurl = mURLText.getText().toString();

    mBusy = ProgressDialog.show(ChannelAdd.this,
      "Downloading", "Accessing XML feed...", true, false);

    Thread t = new Thread()
    {
      public void run()
      {
        try
        {
          ChannelRefresh refresh = new ChannelRefresh(getContentResolver());

          final long id = refresh.syncDB(null, -1, rssurl);
          
          if (id >= 0)
          {
            URL iconurl = getDefaultFavicon(rssurl);
            refresh.updateFavicon(id, iconurl);
          }

            mHandler.post(new Runnable() {
              public void run()
              {
                mBusy.dismiss();
                
                Uri uri = ContentUris.withAppendedId(RSSReader.Channels.CONTENT_URI, id);
                setResult(RESULT_OK, uri.toString());
                finish();
              }
            });
        }
        catch(Exception e)
        {
          final String errmsg = e.getMessage();
          final String errmsgFull = e.toString();

            mHandler.post(new Runnable() {
              public void run()
              {
                mBusy.dismiss();

                String errstr = ((errmsgFull != null) ? errmsgFull : errmsg);

                AlertDialog.show(ChannelAdd.this,
                  "Feed error", R.drawable.star_big_on, 
                  "An error was encountered while accessing the feed: " + errstr,
                  "OK", true);
              }
            });
        }            
      }
    };

    t.start();    
  }
}

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