Chcę włączyć przycisk domowy w moim fragmencie. To pytanie jest zadawane wcześniej, ale dla działania.
Próbowałem ...

 getSupportActionBar().setDisplayHomeAsUpEnabled(true);

... ale to nie działa.
Oto mój kod:

import com.actionbarsherlock.R;
import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.app.ActionBar.Tab;
import com.actionbarsherlock.app.SherlockFragment;
import com.actionbarsherlock.view.MenuItem;

import android.support.v4.app.Fragment;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;

public class SafanTab extends SherlockFragment {

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

    public OnClickListener onOverClick = new OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent myIntent = new Intent(view.getContext(), Over_Safan.class);
            startActivityForResult(myIntent, 0);
        }
    };

    public OnClickListener onProductenClick = new OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent myIntent = new Intent(view.getContext(), Over_Safan.class);
            startActivityForResult(myIntent, 0);
        }
    };

    public OnClickListener onTwitterClick = new OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent myIntent = new Intent(view.getContext(), Over_Safan.class);
            startActivityForResult(myIntent, 0);
        }
    };

}

Jak włączyć przycisk domowy na SherlockFragment?