Android fragment with activities inside

I just started with fragment design for HoneyComb. I created two fragments. When i click the button 'santhosh'(in left side of pic), one button is created in the another fragment(right side of pic). Next I want to make listener for next button, so that next activity is created in the same fragment(ie. new activity within the right side fragment). My codes below. main.xml

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal" > <fragment class="com.fragment.example.Titles" android:id="@+id/titles" android:layout_weight="1" android:layout_width="0px" android:layout_height="match_parent" /> <FrameLayout android:id="@+id/details" android:layout_weight="1" android:layout_width="0px" android:layout_height="match_parent" /> </LinearLayout> 

FragmentExample.java

public class FragmentExample extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); } } 

Titles.java

public class Titles extends Fragment { public FragmentTransaction ft; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View v = inflater.inflate(R.layout.main1, null); Button button1 = (Button)v.findViewById(R.id.button1); button1.setText("santhosh"); button1.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub DetailsFragment details = (DetailsFragment) getFragmentManager().findFragmentById(R.id.details); if (details == null || details.getShownIndex() != 1) { // Make new fragment to show this selection. details = DetailsFragment.newInstance(1); // Execute a transaction, replacing any existing // fragment with this one inside the frame. ft = getFragmentManager().beginTransaction(); ft.add(R.id.details, details, "detail"); ft.setTransition( FragmentTransaction.TRANSIT_FRAGMENT_FADE); ft.commit(); } } }); return v; } } 

DetailsFragment.java

public class DetailsFragment extends Fragment { /** * Create a new instance of DetailsFragment, initialized to * show the text at 'index'. */ Titles title = new Titles(); String[] titles = {"Title1", "Title2", "Title3", "Title4"}; public static DetailsFragment newInstance(int index) { DetailsFragment f = new DetailsFragment(); // Supply index input as an argument. Bundle args = new Bundle(); args.putInt("index", index); f.setArguments(args); return f; } public int getShownIndex() { return getArguments().getInt("index", 0); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { if (container == null) { // Currently in a layout without a container, so no // reason to create our view. return null; } Button button = new Button(getActivity()); button.setText("Next"); button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub } }); return button; } } 

From the DetailsFragment.java i want to display a new Activity with that fragment.