Android Open Source - EasyVote Question List Activity

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Back to project page EasyVote.


The source code is released under:

Apache License

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Java Source Code

//  www.j av  a2 s  .co m


import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;

 * An activity representing a list of Questions. 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 QuestionDetailActivity} 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 QuestionListFragment} and the item details (if present) is a
 * {@link QuestionDetailFragment}.
 * <p>
 * This activity also implements the required
 * {@link QuestionListFragment.Callbacks} interface to listen for item
 * selections.
public class QuestionListActivity extends Activity implements
    QuestionListFragment.Callbacks {

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


  protected void onCreate(Bundle savedInstanceState) {

    if (findViewById( != 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.
      ((QuestionListFragment) getFragmentManager().findFragmentById(


   * Callback method from {@link QuestionListFragment.Callbacks} indicating
   * that the item with the given ID was selected.
  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(QuestionDetailFragment.ARG_ITEM_ID, id);
      Fragment fragment = null;
      int idFragment = 0;
      fragment = new QuestionDetailFragment();
      idFragment =;
      getFragmentManager().beginTransaction().replace(idFragment, fragment).commit();

    } else {
      // In single-pane mode, simply start the detail activity
      // for the selected item ID.
      Intent detailIntent = null;
      detailIntent = new Intent(this, QuestionDetailActivity.class);      
      detailIntent.putExtra(QuestionDetailFragment.ARG_ITEM_ID, id);

  public boolean onCreateOptionsMenu(Menu menu) {
      // Inflate the menu items for use in the action bar
      MenuInflater inflater = getMenuInflater();
      inflater.inflate(, menu);
      return super.onCreateOptionsMenu(menu);
  public boolean onOptionsItemSelected(MenuItem item) {
      // Handle presses on the action bar items
      switch (item.getItemId()) {
              return true;
              return super.onOptionsItemSelected(item);

  private void openNewQuestion() {
    Intent detailIntent = null;
    detailIntent = new Intent(this, AskQuestion.class);

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