Merge "Remove framework dependencies on Support* demos"

 * {@link ActionBar#newTab() ActionBar.newTab()} and

 * related APIs for placing tabs within their action bar area.</p>

 *

 * <p>A replacement for TabActivity can also be implemented by directly using

 * TabHost.  You will need to define a layout that correctly uses a TabHost

 * with a TabWidget as well as an area in which to display your tab content.

 * A typical example would be:</p>

 *

 * {@sample development/samples/Support4Demos/res/layout/fragment_tabs.xml complete}

 *

 * <p>The implementation needs to take over responsibility for switching

 * the shown content when the user switches between tabs.

 *

 * {@sample development/samples/Support4Demos/src/com/example/android/supportv4/app/FragmentTabs.java

 *      complete}

 *

 * <p>Also see the <a href="{@docRoot}resources/samples/Support4Demos/src/com/example/android/supportv4/app/FragmentTabsPager.html">

 * Fragment Tabs Pager</a> sample for an example of using the support library's ViewPager to

 * allow the user to swipe the content to switch between tabs.</p>

 *

 * @deprecated New applications should use Fragments instead of this class;

 * to continue to run on older devices, you can use the v4 support library

 * which provides a version of the Fragment API that is compatible down to

import java.util.Comparator;

/**

 * Layout manager that allows the user to flip left and right

 * through pages of data.  You supply an implementation of a

 * {@link android.support.v4.view.PagerAdapter} to generate the pages that the view shows.

 *

 * <p>Note this class is currently under early design and

 * development.  The API will likely change in later updates of

 * the compatibility library, requiring changes to the source code

 * of apps when they are compiled against the newer version.</p>

 *

 * <p>ViewPager is most often used in conjunction with {@link android.app.Fragment},

 * which is a convenient way to supply and manage the lifecycle of each page.

 * There are standard adapters implemented for using fragments with the ViewPager,

 * which cover the most common use cases.  These are

 * {@link android.support.v4.app.FragmentPagerAdapter} and

 * {@link android.support.v4.app.FragmentStatePagerAdapter}; each of these

 * classes have simple code showing how to build a full user interface

 * with them.

 *

 * <p>For more information about how to use ViewPager, read <a

 * href="{@docRoot}training/implementing-navigation/lateral.html">Creating Swipe Views with

 * Tabs</a>.</p>

 *

 * <p>Below is a more complicated example of ViewPager, using it in conjunction

 * with {@link android.app.ActionBar} tabs.  You can find other examples of using

 * ViewPager in the API 4+ Support Demos and API 13+ Support Demos sample code.

 *

 * {@sample development/samples/Support13Demos/src/com/example/android/supportv13/app/ActionBarTabsPager.java

 *      complete}

 * Framework copy of the support-v4 ViewPager class.

 */

public class ViewPager extends ViewGroup {

    private static final String TAG = "ViewPager";