Android Open Source - HijriCalendar-master Infinite Pager Adapter

From Project

Back to project page HijriCalendar-master.

License

The source code is released under:

MIT License

If you think the Android project HijriCalendar-master listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

package com.antonyt.infiniteviewpager;
//w w w  .j a  v a2  s .c  o m
import android.os.Parcelable;
import android.support.v4.view.PagerAdapter;
import android.view.View;
import android.view.ViewGroup;

/**
 * A PagerAdapter that wraps around another PagerAdapter to handle paging
 * wrap-around.
 * 
 */
public class InfinitePagerAdapter extends PagerAdapter {
  private PagerAdapter adapter;

  public InfinitePagerAdapter(PagerAdapter adapter) {
    this.adapter = adapter;
  }

  @Override
  public int getCount() {
    // warning: scrolling to very high values (1,000,000+) results in
    // strange drawing behaviour
    return Integer.MAX_VALUE;
  }

  /**
   * @return the {@link #getCount()} result of the wrapped adapter
   */
  public int getRealCount() {
    return adapter.getCount();
  }

  @Override
  public Object instantiateItem(ViewGroup container, int position) {
    int virtualPosition = position % getRealCount();
    // only expose virtual position to the inner adapter
    return adapter.instantiateItem(container, virtualPosition);
  }

  @Override
  public void destroyItem(ViewGroup container, int position, Object object) {
    int virtualPosition = (position) % getRealCount();
    // only expose virtual position to the inner adapter
    adapter.destroyItem(container, virtualPosition, object);
  }

  /*
   * Delegate rest of methods directly to the inner adapter.
   */

  @Override
  public void finishUpdate(ViewGroup container) {
    adapter.finishUpdate(container);
  }

  @Override
  public boolean isViewFromObject(View view, Object object) {
    return adapter.isViewFromObject(view, object);
  }

  @Override
  public void restoreState(Parcelable bundle, ClassLoader classLoader) {
    adapter.restoreState(bundle, classLoader);
  }

  @Override
  public Parcelable saveState() {
    return adapter.saveState();
  }

  @Override
  public void startUpdate(ViewGroup container) {
    adapter.startUpdate(container);
  }
}

Java Source Code List