Android Open Source - irish_rail_next Main Activity

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Back to project page irish_rail_next.

License

The source code is released under:

MIT License

Java Source Code

package rdcl.ie.pebbleirishrailnext;
/* w  w  w  .  j  ava 2  s. c  o m*/
import android.content.Context;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.CheckedTextView;
import android.widget.ListView;
import android.widget.Toast;

import java.util.Collections;
import java.util.List;

import rdcl.ie.pebbleirishrailnext.api.IrishRailApi;
import rdcl.ie.pebbleirishrailnext.api.StationUpdateAlarm;
import rdcl.ie.pebbleirishrailnext.service.StationUpdateService;


public class MainActivity extends ActionBarActivity
{
  public static class StationListAdapter extends ArrayAdapter<IrishRailApi.StationInfo>
  {
    public static class ViewContainer
    {
      public IrishRailApi.StationInfo station;
      public CheckedTextView    text;
    }

    /// Selected Station
    private IrishRailApi.StationInfo   selected;
    /// API
    private IrishRailApi       api;
    /// Checked View
    private CheckedTextView      checked;

    /**
     * Default Constructor
     * @param context  Application Context
     */
    public StationListAdapter( Context context )
    {
      super( context, R.layout.station_list_item );
      api = new IrishRailApi( context );
    }

    @Override
    public View getView( int position, View convertView, ViewGroup parent )
    {
      IrishRailApi.StationInfo station   = getItem( position );
      ViewContainer container     = null;

      if( convertView == null )
      {
        LayoutInflater inflater = ( LayoutInflater ) getContext().getSystemService( Context.LAYOUT_INFLATER_SERVICE );
        convertView     = inflater.inflate( R.layout.station_list_item, null );
        container    = new ViewContainer();

        container.station   = station;
        container.text     = ( CheckedTextView ) convertView.findViewById( R.id.station );

        convertView.setTag( container );
      }
      else
      {
        container = ( ViewContainer ) convertView.getTag();
      }

      container.text.setText( station.name );
      container.station = station;

      if( selected != null && selected.name.equals( station.name ) )
      {
        container.text.setChecked( true );
        checked = container.text;
      }
      else
      {
        container.text.setChecked( false );
      }

      return convertView;
    }

    /**
     * Refresh the station list
     */
    public void refresh()
    {
      api.getStationList( IrishRailApi.StationType.DART, new IrishRailApi.OnStationListReceivedListener()
      {
        @Override
        public void onStationListReceived( IrishRailApi api, List<IrishRailApi.StationInfo> stations )
        {
          StationListAdapter.this.clear();

          Collections.sort( stations );

          StationListAdapter.this.addAll( stations );
          StationListAdapter.this.notifyDataSetChanged();
        }

        @Override
        public void onStationListingError( IrishRailApi api, Exception exception )
        {
          Toast.makeText( getContext(), "Error During Station Request: " + exception.getLocalizedMessage(), Toast.LENGTH_SHORT ).show();
        }
      } );
    }

    /**
     * Set the selected station for this adapter
     * @param view     Checked View
     * @param station  Selected Station
     */
    public boolean setCheckedStation( View view, IrishRailApi.StationInfo station )
    {
      CheckedTextView checkedTextView = ( CheckedTextView ) view.findViewById( R.id.station );

      if( checkedTextView != null )
      {
        if( checked != null && checked == checkedTextView )
        {
          checkedTextView.setChecked( false );
          this.selected = null;

          return false;
        }
        else
        {
          if( checked != null )
          {
            checked.setChecked( false );
          }
          checkedTextView.setChecked( true );
          checked = checkedTextView;
          selected = station;

          return true;
        }
      }

      return false;
    }
  }

  /// List Adapter
  private StationListAdapter adapter;

  @Override
  protected void onCreate( Bundle savedInstanceState )
  {
    super.onCreate( savedInstanceState );
    setContentView( R.layout.station_list );
    setTitle( R.string.station_list_title );

    adapter = new StationListAdapter( this );

    ListView stationList = ( ListView ) findViewById( R.id.station_list_view );
    stationList.setAdapter( adapter );

    stationList.setOnItemClickListener( new AdapterView.OnItemClickListener()
    {
      @Override
      public void onItemClick( AdapterView<?> parent, View view, int position, long id )
      {
        IrishRailApi.StationInfo station = ( ( StationListAdapter.ViewContainer ) view.getTag() ).station;

        if( adapter.setCheckedStation( view, station ) )
        {
          StationUpdateAlarm.set( getApplicationContext(), station );
        }
        else
        {
          StationUpdateAlarm.stop( getApplicationContext() );
        }
      }
    } );

    adapter.refresh();


  }

  @Override
  public boolean onCreateOptionsMenu( Menu menu )
  {
    getMenuInflater().inflate( R.menu.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;
    }
    else if( id == R.id.action_refresh )
    {
      adapter.refresh();
    }

    return super.onOptionsItemSelected( item );
  }
}

Java Source Code List

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