TabStacker | Tab Stacker is an Android library | iOS library

import android.support.v4.app.Fragment;


public class MyFragment extends Fragment implements TabStacker.TabStackInterface {

    @Override
    public void onTabFragmentPresented(TabStacker.PresentReason reason) {
    }

    @Override
    public void  

public class MainActivity extends FragmentActivity {

    private TabStacker mTabStacker;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.main_ac  

// code in Activity
if (isActive()) { // be sure that the Activity is still there
    mTabStacker.replaceFragment(...)
}

// or code in Fragment
Activity activity = getActivity();
if ((activity != null) && !isDetached()) { // be sure the frag