Initally hide the FAB and show it with an animation.

MainActivity

public class MainActivity extends ListActivity {
    private Handler mHandler = new Handler();

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

        final FloatingActionButton floatingActionButton = (FloatingActionButton) findViewById(R.id.button_floating_action);
        floatingActionButton.attachToListView(getListView());

        ListAdapter listAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,
                getResources().getStringArray(R.array.planets));
        getListView().setAdapter(listAdapter);

        floatingActionButton.hide(false);
        mHandler.postDelayed(new Runnable() {
            @Override
            public void run() {
                floatingActionButton.show(true);
            }
        }, 1000);
    }
}