Android Open Source - rhetolog Participant Adapter

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Back to project page rhetolog.

License

The source code is released under:

Copyright (c) 2012 Kirk Zurell Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Soft...

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Java Source Code

package name.zurell.kirk.apps.android.rhetolog;
/*  w ww .  j  a  v  a2  s.c  o  m*/
/*
 * Copyright (c) 2012 Kirk Zurell
 *
 * See the file LICENSE for copying permission.
 */

import android.app.Activity;
import android.app.LoaderManager.LoaderCallbacks;
import android.content.Context;
import android.content.CursorLoader;
import android.content.Loader;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CursorAdapter;
import android.widget.ImageView;
import android.widget.TextView;

public class ParticipantAdapter extends CursorAdapter implements LoaderCallbacks<Cursor> {

  @SuppressWarnings("unused")
  private static final String TAG = ParticipantAdapter.class.getSimpleName();

  // Arbitrary constants
  private static final int PARTICIPANT_LOADER_ID = 111;
  
  private static final String LOADER_SESSION_ARG = "session_arg";

  
  LayoutInflater mInflater;
  Activity mActivity;

  

  public ParticipantAdapter(Context context, Cursor c, int flags) {
    super(context, c, flags);
    mInflater = LayoutInflater.from(context);
    mActivity = (Activity) context;

    // We're using participants/currentsession
    mActivity.getLoaderManager().restartLoader(PARTICIPANT_LOADER_ID, null, this);
  }

  
  
  @Override
  public void bindView(View view, Context context, Cursor cursor) {

    // Note participant _ID.
    int participantIdCol = cursor.getColumnIndex(RhetologContract.ParticipantsColumns._ID);
    int participant = cursor.getInt(participantIdCol);
    ((ParticipantView)view).setParticipant(participant); 

    
    // Bind the participants' caption.
    TextView partCaption;
    partCaption = (TextView) view.findViewById(R.id.participantCaption);

    String caption = cursor.getString(cursor.getColumnIndex(RhetologContract.ParticipantsColumns.NAME));
    partCaption.setText(caption);


    // Bind participant thumbnail or placeholder.
    String thumbUriString;
    thumbUriString = cursor.getString(cursor.getColumnIndex(RhetologContract.ParticipantsColumns.PHOTO));

    ImageView partPhoto = (ImageView) view.findViewById(R.id.participantPhoto);
    partPhoto.setContentDescription(caption);

    if (thumbUriString == null || thumbUriString.isEmpty()) {
      partPhoto.setImageResource(R.drawable.rhetolog_participant);
    } else {
      Uri thumbUri = Uri.parse(thumbUriString);
      partPhoto.setImageURI(thumbUri);
    }

  }

  @Override
  public View newView(Context context, Cursor cursor, ViewGroup parent) {
    ParticipantView workView = (ParticipantView) mInflater.inflate(R.layout.participantentry, parent, false);
    
    // Let each participant know their owning activity for drag & drop, their application as session actor for actions.
    workView.activity = mActivity;
    workView.setApplication((SessionActor) mActivity.getApplication());
    
    return workView;
  }

  /**
   * Loader to populate participants list in main view.
   */
  
  // Projection for adding participants.
  private static final String[] PARTICIPANT_PROJECTION = {
    RhetologContract.ParticipantsColumns.NAME,
    RhetologContract.ParticipantsColumns.SESSION,
    RhetologContract.ParticipantsColumns.PHOTO,
    RhetologContract.ParticipantsColumns._ID
  };
  // Where clause, actual session number provided by init/restart above whenever the selected session changes
  //private static final String PARTICIPANT_SELECTION = RhetologContract.ParticipantsColumns.SESSION + " = ? ";

  
  @Override
  public Loader<Cursor> onCreateLoader(int id, Bundle args) {

    
    CursorLoader result = null;

    switch (id) {
    case PARTICIPANT_LOADER_ID:
      result = new CursorLoader(mActivity, 
            RhetologContract.PARTICIPANTSCURRENTSESSION_URI,
            PARTICIPANT_PROJECTION, 
            null, //PARTICIPANT_SELECTION, 
            null, 
            null);
      
      break;
    default:
      break;
    }

    return result;

  }

  @Override
  public void onLoadFinished(Loader<Cursor> loader, Cursor newCursor) {
    
    switch(loader.getId()) {
    
    case PARTICIPANT_LOADER_ID:
      //swapCursor(newCursor);
      changeCursor(newCursor);
      break;
    default:
      break;
    }
    
  }

  

  @Override
  public void onLoaderReset(Loader<Cursor> loader) {
    switch (loader.getId()) {
    case PARTICIPANT_LOADER_ID:
      //swapCursor(null);
      changeCursor(null);
      break;
    default:
      break;
    }
    
  }

}

Java Source Code List