Android Open Source - eclipse-ui-tips Up Navigation Activity

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License

The source code is released under:

Eclipse Public License -v 1.0 THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC LICENSE ("AGREEMENT"). ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM CONSTITUT...

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Java Source Code

/*******************************************************************************
 * Copyright (c) 2012 Kaloyan Raev./*w w w  .  ja  v  a2 s . co m*/
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Kaloyan Raev - initial implementation
 *******************************************************************************/
package name.raev.kaloyan.android.eclipseuitips;

import android.content.Intent;
import android.os.Bundle;

import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.actionbarsherlock.view.MenuItem;

/**
 * An activity with action bar where the icon enabled for up navigation. 
 */
public class UpNavigationActivity extends SherlockFragmentActivity {
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    
    enableUpNavigation();
  }
  
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
      switch (item.getItemId()) {
          case android.R.id.home:
              // app icon in action bar clicked; go one level up
              Intent intent = new Intent(this, getUpLevelActivity());
              intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
              startActivity(intent);
              return true;
          default:
              return super.onOptionsItemSelected(item);
      }
  }
  
  /**
   * Returns the activity that is one level up. This is the activity that will
   * be shown when the user invokes the up navigation.
   * 
   * <p>
   * The default is to navigate to the home activity. Superclasses may
   * override this method and define other activities for destination.
   * </p>
   * 
   * @return the class of the activity that is one level up
   */
  protected Class<?> getUpLevelActivity() {
    return WelcomeActivity.class;
  }

  private void enableUpNavigation() {
    ActionBar actionBar = getSupportActionBar();
    actionBar.setDisplayOptions(actionBar.getDisplayOptions() | ActionBar.DISPLAY_HOME_AS_UP);
  }
  
}

Java Source Code List