Android Open Source - yapea Image List Activity

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License

The source code is released under:
GNU General Public License
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Java Source Code

package org.jdamico.yapea;
//from   w w w. j a  v  a 2  s .  c o m
/*
 * This file is part of YAPEA.
 * 
 *    YAPEA is free software: you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License (version 2) 
 *    as published by the Free Software Foundation.
 *
 *    YAPEA 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 YAPEA.  If not, see <http://www.gnu.org/licenses/>.
 */

import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;

/**
 * An activity representing a list of Images. This activity has different
 * presentations for handset and tablet-size devices. On handsets, the activity
 * presents a list of items, which when touched, lead to a
 * {@link ImageDetailActivity} representing item details. On tablets, the
 * activity presents the list of items and item details side-by-side using two
 * vertical panes.
 * <p>
 * The activity makes heavy use of fragments. The list of items is a
 * {@link ImageListFragment} and the item details (if present) is a
 * {@link ImageDetailFragment}.
 * <p>
 * This activity also implements the required
 * {@link ImageListFragment.Callbacks} interface to listen for item selections.
 */
public class ImageListActivity extends FragmentActivity implements
    ImageListFragment.Callbacks {

  /**
   * Whether or not the activity is in two-pane mode, i.e. running on a tablet
   * device.
   */
  private boolean mTwoPane;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_image_list);

    if (findViewById(R.id.image_detail_container) != null) {
      // The detail container view will be present only in the
      // large-screen layouts (res/values-large and
      // res/values-sw600dp). If this view is present, then the
      // activity should be in two-pane mode.
      mTwoPane = true;

      // In two-pane mode, list items should be given the
      // 'activated' state when touched.
      ((ImageListFragment) getSupportFragmentManager().findFragmentById(
          R.id.image_list)).setActivateOnItemClick(true);
    }

    // TODO: If exposing deep links into your app, handle intents here.
  }

  /**
   * Callback method from {@link ImageListFragment.Callbacks} indicating that
   * the item with the given ID was selected.
   */
  @Override
  public void onItemSelected(String id) {
    if (mTwoPane) {
      // In two-pane mode, show the detail view in this activity by
      // adding or replacing the detail fragment using a
      // fragment transaction.
      Bundle arguments = new Bundle();
      arguments.putString(ImageDetailFragment.ARG_ITEM_ID, id);
      ImageDetailFragment fragment = new ImageDetailFragment();
      fragment.setArguments(arguments);
      getSupportFragmentManager().beginTransaction()
          .replace(R.id.image_detail_container, fragment).commit();

    } else {
      // In single-pane mode, simply start the detail activity
      // for the selected item ID.
      Intent detailIntent = new Intent(this, ImageDetailActivity.class);
      detailIntent.putExtra(ImageDetailFragment.ARG_ITEM_ID, id);
      startActivity(detailIntent);
    }
  }
}
Java Source Code List
