Android fragment show as dialogfragment or usual fragment

Question

What I am trying to achieve is to have a fragment that on tablet it shows as a DialogFragment, while on smartphone it would be shown as a regular fragment. I am

Answer 1

This issue can be easily fixed if instead of trying to make a Fragment look like a DialogFragment I would look from the opposite angle: make a DialogFragment look like a Fragment - after all, a DialogFragment is a Fragment!

The key of this fix is to call or not DialogFragment.setShowsDialog();

So changing the DetailedFragment to:

public class DetailedFragment extends DialogFragment {

    private static final String ARG_SHOW_AS_DIALOG = "DetailedFragment.ARG_SHOW_AS_DIALOG";

    public static DetailedFragment newInstance(boolean showAsDialog) {
        DetailedFragment fragment = new DetailedFragment();
        Bundle args = new Bundle();
        args.putBoolean(ARG_SHOW_AS_DIALOG, showAsDialog);
        fragment.setArguments(args);
        return fragment;
    }

    public static DetailedFragment newInstance() {
        return newInstance(true);
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Bundle args = getArguments();
        if (args != null) {
            setShowsDialog(args.getBoolean(ARG_SHOW_AS_DIALOG, true));
        }
    }

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

its layout remains as it was, DetailedActivity changes to:

public class DetailedActivity extends ActionBarActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.detailed_activity);
        if (savedInstanceState == null) {
            DetailedFragment fragment = DetailedFragment.newInstance(false);
            getSupportFragmentManager().beginTransaction().add(R.id.root_layout_details, fragment, "Some_tag").commit();
        }
    }
}

its layout as well:

and the caller activity does only:

private void decideToNext() {
    String device = getString(R.string.device);
    if ("normal".equalsIgnoreCase(device)) {
        Intent intent = new Intent(this, DetailedActivity.class);
        startActivity(intent);
    } else if ("large".equalsIgnoreCase(device)) {
        DetailedFragment fragment = DetailedFragment.newInstance();
        fragment.show(getSupportFragmentManager(), "Tablet_specific");
    }
}