Preferences.java

package ru.shutoff.cgstarter;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.view.View;

import java.lang.reflect.Field;
import java.lang.reflect.Method;

public class Preferences extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.pager);
        final ViewPager pager = (ViewPager) findViewById(R.id.pager);
        PagerAdapter adapter = new PagerAdapter(getSupportFragmentManager());
        pager.setAdapter(adapter);

        final ActionBar actionBar = getSupportActionBar();
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
        ActionBar.TabListener tabListener = new ActionBar.TabListener() {
            @Override
            public void onTabSelected(ActionBar.Tab tab, android.support.v4.app.FragmentTransaction fragmentTransaction) {
                pager.setCurrentItem(tab.getPosition());
            }

            @Override
            public void onTabUnselected(ActionBar.Tab tab, android.support.v4.app.FragmentTransaction fragmentTransaction) {

            }

            @Override
            public void onTabReselected(ActionBar.Tab tab, android.support.v4.app.FragmentTransaction fragmentTransaction) {

            }
        };

        pager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
            @Override
            public void onPageSelected(int pos) {
                ActionBar b = getSupportActionBar();
                try {
                    b.setSelectedNavigationItem(pos);
                    View action_bar_view = findViewById(getResources().getIdentifier("action_bar", "id", "android"));
                    Class<?> action_bar_class = action_bar_view.getClass();
                    Field tab_scroll_view_prop = action_bar_class.getDeclaredField("mTabScrollView");
                    tab_scroll_view_prop.setAccessible(true);
                    Object tab_scroll_view = tab_scroll_view_prop.get(action_bar_view);
                    if (tab_scroll_view == null) return;
                    Field spinner_prop = tab_scroll_view.getClass().getDeclaredField("mTabSpinner");
                    spinner_prop.setAccessible(true);
                    Object tab_spinner = spinner_prop.get(tab_scroll_view);
                    if (tab_spinner == null) return;
                    Method set_selection_method = tab_spinner.getClass().getSuperclass().getDeclaredMethod("setSelection", Integer.TYPE, Boolean.TYPE);
                    set_selection_method.invoke(tab_spinner, pos, true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });

        for (int i = 0; i < adapter.getCount(); i++) {
            actionBar.addTab(
                    actionBar.newTab()
                            .setText(adapter.getPageTitle(i))
                            .setTabListener(tabListener));
        }
        setResult(RESULT_CANCELED);
    }


    public class PagerAdapter extends FragmentPagerAdapter {

        public PagerAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public Fragment getItem(int i) {
            switch (i) {
                case 0:
                    return new AppsFragment();
                case 1:
                    return new QuickLaunchFragment();
                case 2:
                    return new ControlFragment();
                case 3:
                    return new PhoneFragment();
                case 4:
                    return new NotificationFragment();
                case 5:
                    return new StartFragment();
                case 6:
                    return new HelpFragment();
            }
            return null;
        }

        @Override
        public int getCount() {
            return 7;
        }

        @Override
        public CharSequence getPageTitle(int position) {
            switch (position) {
                case 0:
                    return getString(R.string.apps);
                case 1:
                    return getString(R.string.quick_launch);
                case 2:
                    return getString(R.string.control);
                case 3:
                    return getString(R.string.phone);
                case 4:
                    return getString(R.string.notification);
                case 5:
                    return getString(R.string.start);
                case 6:
                    return getString(R.string.help);
            }
            return null;
        }
    }

}