Simple fragment adapter for ViewPager.

ViewPagerFragmentAdapter.java

package com.sirelon;

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;

import java.util.List;

/**
 * @author romanishin
 * @since 18.08.15.
 */
public class ViewPagerFragmentAdapter extends FragmentStatePagerAdapter {

    private final List<Fragment> mFragments;
    private final List<CharSequence> mTitles;

    public ViewPagerFragmentAdapter(FragmentManager fm, List<Fragment> fragments) {
        this(fm, fragments, null);
    }

    public ViewPagerFragmentAdapter(FragmentManager fm, List<Fragment> fragments, List<CharSequence> titles) {
        super(fm);
        mFragments = fragments;
        mTitles = titles;

        if (mTitles != null)
            if (mFragments.size() != mTitles.size())
                throw new IllegalArgumentException("Size of fragments and title's size not equal!");
    }

    @Override
    public Fragment getItem(int position) {
        return mFragments.get(position);
    }

    @Override
    public int getCount() {
        return mFragments.size();
    }

    @Override
    public CharSequence getPageTitle(int position) {
        if (mTitles != null)
            return mTitles.get(position);
        
        return super.getPageTitle(position);
    }
}