@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_item_detail);

        // Show the Up button in the action bar.
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        // savedInstanceState is non-null when there is fragment state
        // saved from previous configurations of this activity
        // (e.g. when rotating the screen from portrait to landscape).
        // In this case, the fragment will automatically be re-added
        // to its container so we don't need to manually add it.
        // For more information, see the Fragments API guide at:
        //
        // http://developer.android.com/guide/components/fragments.html
        //
        if (savedInstanceState == null) {
            // Create the detail fragment and add it to the activity
            // using a fragment transaction.
            Bundle arguments = new Bundle();
            arguments.putInt(ItemDetailFragment.ARG_ITEM_ID,
                    getIntent().getIntExtra(ItemDetailFragment.ARG_ITEM_ID, 0));
            ItemDetailFragment fragment = new ItemDetailFragment();
            fragment.setArguments(arguments);
            getSupportFragmentManager().beginTransaction()
                    .add(R.id.item_detail_container, fragment).commit();
        }
    }
An activity representing a single Item detail screen. This activity is only
used on handset devices. On tablet-size devices, item details are presented
side-by-side with a list of items in a {@link ItemListActivity}.
<p>
This activity is mostly just a 'shell' activity containing nothing more than
a {@link ItemDetailFragment}.

@author Tonic Artos
Example/src/com/tonicartos/stickygridheadersexample/ItemDetailActivity.java