UniversalFragmentStatePagerAdapter

UniversalFragmentStatePagerAdapter.java

public class UniversalFragmentStatePagerAdapter extends FragmentStatePagerAdapter {
  private final String[] titles;
  private final Fragment[] fragments;

  public UniversalFragmentStatePagerAdapter(@NonNull FragmentManager fragmentManager,
      String[] titles, @NonNull Fragment[] fragments) {
    super(fragmentManager);
    if (titles != null && titles.length != fragments.length) {
      throw new IllegalArgumentException();
    }
    this.titles = titles;
    this.fragments = fragments;
  }

  @Override public Fragment getItem(int position) {
    return fragments[position];
  }

  @Override public int getCount() {
    return fragments.length;
  }

  @Override public CharSequence getPageTitle(int position) {
    return titles != null ? titles[position] : "";
  }

  @Override public Object instantiateItem(ViewGroup container, int position) {
    return super.instantiateItem(container, position);
  }
}