Android Open Source - open311-android Settings Activity

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License

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

/**
 * @copyright 2012 City of Bloomington, Indiana
 * @license http://www.gnu.org/licenses/gpl.txt GNU/GPL, see LICENSE.txt
 * @author Cliff Ingham <inghamn@bloomington.in.gov>
 *//*w  w w.  j  a va2s . c  om*/
package gov.in.bloomington.georeporter.activities;

import gov.in.bloomington.georeporter.R;
import gov.in.bloomington.georeporter.fragments.PersonalInfoFragment;
import gov.in.bloomington.georeporter.fragments.ServersFragment;
import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.Fragment;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.view.Menu;


public class SettingsActivity extends BaseActivity {
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    
    ActionBar actionBar = getActionBar();
    actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
    actionBar.setTitle(R.string.menu_settings);
    
    Tab tab;
    tab = actionBar.newTab()
        .setText(R.string.tab_servers)
        .setTabListener(new TabListener<ServersFragment>(this, "servers", ServersFragment.class));
    actionBar.addTab(tab);
    
    tab = actionBar.newTab()
        .setText(R.string.tab_personal_info)
        .setTabListener(new TabListener<PersonalInfoFragment>(this, "personalInfo", PersonalInfoFragment.class));
    actionBar.addTab(tab);
  }
  
  /**
   * Disable the settings menu button
   * 
   * This prevents users from opening multiple settings activities.
   */
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // TODO Auto-generated method stub
    getMenuInflater().inflate(R.menu.main, menu);
    menu.findItem(R.id.menu_settings).setEnabled(false);
    return true;
  }
  
  /**
   * Copy of implementation from Android developer docs
   * 
   * http://developer.android.com/guide/topics/ui/actionbar.html#Tabs
   * This version has been slightly modified to work with Sherlock
   */
  public static class TabListener<T extends Fragment> implements ActionBar.TabListener {
      private Fragment mFragment;
      private final SettingsActivity mActivity;
      private final String mTag;
      private final Class<T> mClass;

      /**
       * Constructor used each time a new tab is created.
       * 
       * @param settingsActivity  The host Activity, used to instantiate the fragment
       * @param tag  The identifier tag for the fragment
       * @param clz  The fragment's Class, used to instantiate the fragment
       */
      public TabListener(SettingsActivity settingsActivity, String tag, Class<T> clz) {
          mActivity = settingsActivity;
          mTag = tag;
          mClass = clz;
      }

      /* The following are each of the ActionBar.TabListener callbacks */

      public void onTabSelected(Tab tab, FragmentTransaction ft) {
          // Check if the fragment is already initialized
          if (mFragment == null) {
              // If not, instantiate and add it to the activity
              mFragment = Fragment.instantiate(mActivity, mClass.getName());
              ft.add(android.R.id.content, mFragment, mTag);
          } else {
              // If it exists, simply attach it in order to show it
              ft.attach(mFragment);
          }
      }

      public void onTabUnselected(Tab tab, FragmentTransaction ft) {
          if (mFragment != null) {
              // Detach the fragment, because another one is being attached
              ft.detach(mFragment);
          }
      }

      public void onTabReselected(Tab tab, FragmentTransaction ft) {
          // User selected the already selected tab. Usually do nothing.
      }
  }}
Java Source Code List
