Establecer la pestaña predeterminada para la configuración Fragmento / ViewPager

¿Cómo se establece una pestaña predeterminada cuando se crea la FragmentActivity por primera vez? Tengo 5 pestañas y quiero que se abra a la pestaña 2, no 1. Parece que debería ser mucho más fácil de lo que es!

@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.fragment_layout); mSectionsPagerAdapter = new SectionsPagerAdapter( getSupportFragmentManager()); final ActionBar actionBar = getActionBar(); actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); mViewPager = (ViewPager) findViewById(R.id.viewpager); mViewPager.setAdapter(mSectionsPagerAdapter); mViewPager .setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() { @Override public void onPageSelected(int position) { actionBar.setSelectedNavigationItem(position); } }); for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) { actionBar.addTab(actionBar.newTab() .setText(mSectionsPagerAdapter.getPageTitle(i)) .setTabListener(this)); } } public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { } @Override public void onSaveInstanceState(Bundle savedInstanceState) { super.onSaveInstanceState(savedInstanceState); } @Override public void onRestoreInstanceState(Bundle savedInstanceState) { super.onRestoreInstanceState(savedInstanceState); } public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) { mViewPager.setCurrentItem(tab.getPosition()); } public void onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { } public class SectionsPagerAdapter extends FragmentPagerAdapter { public SectionsPagerAdapter(FragmentManager fm) { super(fm); } @Override public Fragment getItem(int position) { Fragment f = null; switch (position) { case 0: { f = new MasterFrag(); Bundle args = new Bundle(); f.setArguments(args); break; } // case 1 - 3 edited out; i'd like default view "case 1". default: throw new IllegalArgumentException("not this many fragments: " + position); } return f; } @Override public int getCount() { return 4; } @Override public CharSequence getPageTitle(int position) { switch (position) { case 0: return getString(R.string.mastercattab1).toUpperCase(); // case 1- 3 edited out } return null; } }

Y mi XML

 <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <TabHost android:id="@android:id/tabhost" android:layout_width="fill_parent" android:layout_height="fill_parent" > <LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <TabWidget android:id="@android:id/tabs" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="0" android:orientation="horizontal" /> <FrameLayout android:id="@android:id/tabcontent" android:layout_width="0dp" android:layout_height="0dp" android:layout_weight="0" /> <android.support.v4.view.ViewPager android:id="@+id/viewpager" android:layout_width="fill_parent" android:layout_height="0dp" android:layout_weight="1" /> </LinearLayout> </TabHost> </LinearLayout>