MainActivity.java

	public void pushFragments(String tag, Fragment fragment,
			boolean shouldAnimate, boolean shouldAdd) {
		if (shouldAdd)
			mStacks.get(tag).push(fragment);
		FragmentManager manager = getSupportFragmentManager();
		FragmentTransaction ft = manager.beginTransaction();
		ft.replace(R.id.realtabcontent, fragment).addToBackStack(null);
		ft.commit();
	}


	public void popFragments() {
		if( mStacks.get(mCurrentTab).size() - 2 < 0)  {
			super.finish();
			return;
		}
		Fragment fragment = mStacks.get(mCurrentTab).elementAt(
				mStacks.get(mCurrentTab).size() - 2);

		mStacks.get(mCurrentTab).pop();

		FragmentManager manager = getSupportFragmentManager();
		FragmentTransaction ft = manager.beginTransaction();
		ft.replace(R.id.realtabcontent, fragment);
		ft.commit();
	}

tabFragment.java

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		return inflater.inflate(R.layout.fragment_tab, container, false);
	}

	ViewPager mViewPager;

	@Override
	public void onViewCreated(View view, Bundle savedInstanceState) {
		super.onViewCreated(view, savedInstanceState);
		mViewPager= (ViewPager) view.findViewById(R.id.viewPager);
	}

	public void onActivityCreated(Bundle savedInstanceState) {
		super.onActivityCreated(savedInstanceState);
		
	}

	public void onResume() {
		super.onResume();
		mViewPager.setAdapter(new MyAdapter(getChildFragmentManager()));
	}
	
	public static class MyAdapter extends FragmentStatePagerAdapter {
		public MyAdapter(FragmentManager fm) {
			super(fm);
		}

		@Override
		public int getCount() {
			return 4;
		}

		@Override
		public Fragment getItem(int position) {
			return detailPageFragment.newInstance(String.valueOf(position));
		}

		@Override
		public CharSequence getPageTitle(int position) {
			return "Fragment # " + position;
		}

	}