Android Open Source - RejsekortReader Block 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 info.rejsekort.reader;
// ww  w . j  a v  a 2s . c o  m
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.NavUtils;
import android.view.MenuItem;

/**
 * An activity representing a list of Blocks. 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 BlockDetailActivity} 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 BlockListFragment} and the item details (if present) is a
 * {@link BlockDetailFragment}.
 * <p>
 * This activity also implements the required
 * {@link BlockListFragment.Callbacks} interface to listen for item selections.
 */
public class BlockListActivity extends FragmentActivity implements
    BlockListFragment.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_block_list);
    // Show the Up button in the action bar.
    getActionBar().setDisplayHomeAsUpEnabled(true);

    if (findViewById(R.id.block_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.
      ((BlockListFragment) getSupportFragmentManager().findFragmentById(
          R.id.block_list)).setActivateOnItemClick(true);
    }

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

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case android.R.id.home:
      // This ID represents the Home or Up button. In the case of this
      // activity, the Up button is shown. Use NavUtils to allow users
      // to navigate up one level in the application structure. For
      // more details, see the Navigation pattern on Android Design:
      //
      // http://developer.android.com/design/patterns/navigation.html#up-vs-back
      //
      NavUtils.navigateUpFromSameTask(this);
      return true;
    }
    return super.onOptionsItemSelected(item);
  }

  /**
   * Callback method from {@link BlockListFragment.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(BlockDetailFragment.ARG_ITEM_ID, id);
      BlockDetailFragment fragment = new BlockDetailFragment();
      fragment.setArguments(arguments);
      getSupportFragmentManager().beginTransaction()
          .replace(R.id.block_detail_container, fragment).commit();

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