AppFragmentPagerAdapter.java

package com.sirelon.widget.viewpager;

import android.app.Fragment;
import android.app.FragmentManager;
import android.os.Parcelable;
import android.support.v13.app.FragmentStatePagerAdapter;
import android.view.View;
import android.view.ViewGroup;

import com.spit16.ui.fragment.AbsFragment;

import java.util.ArrayList;

/**
 * @author romanishin
 * @since 30.06.15.
 */
public class AppFragmentPagerAdapter extends FragmentStatePagerAdapter {

    protected final ArrayList<? extends FragmentHolder> mFragments;

    public AppFragmentPagerAdapter(FragmentManager fm, ArrayList<? extends FragmentHolder> mFragments) {
        super(fm);
        this.mFragments = mFragments;
    }

    @Override
    public void restoreState(Parcelable state, ClassLoader loader) {
        super.restoreState(state, loader);

        for (int i = 0; i < mFragments.size(); i++) {
            FragmentHolder holder = mFragments.get(i);
            holder.fragment = (AbsFragment) instantiateItem(null, i);
        }
    }

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

    @Override
    public CharSequence getPageTitle(int position) {
        return mFragments.get(position).title;
    }

    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        super.destroyItem(container, position, object);
        mFragments.remove(position);
    }

    @Override
    public void destroyItem(View container, int position, Object object) {
        super.destroyItem(container, position, object);
    }

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

    public static class FragmentHolder {
        public AbsFragment fragment;
        public String title;
    }
}