TitlesFragment.java

package course.examples.Fragments.StaticConfigLayout;

import android.app.Activity;
import android.app.ListFragment;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;

//Several Activity and Fragment lifecycle methods are instrumented to emit LogCat output
//so you can follow the class' lifecycle

public class TitlesFragment extends ListFragment {

	private static final String TAG = "TitlesFragment";
	private ListSelectionListener mListener = null;
	private int mCurrIdx = -1;

	// Callback interface that allows this Fragment to notify the QuoteViewerActivity when  
	// user clicks on a List Item  
	public interface ListSelectionListener {
		public void onListSelection(int index);
	}

	@Override
	public void onAttach(Activity activity) {
		super.onAttach(activity);
		try {
			
			// Set the ListSelectionListener for communicating with the QuoteViewerActivity
			mListener = (ListSelectionListener) activity;

		} catch (ClassCastException e) {
			throw new ClassCastException(activity.toString()
					+ " must implement OnArticleSelectedListener");
		}
	}

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		setRetainInstance(true);
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		return super.onCreateView(inflater, container, savedInstanceState);

	}

	@Override
	public void onActivityCreated(Bundle savedState) {
		super.onActivityCreated(savedState);

		// Set the list choice mode to allow only one selection at a time
		getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);

		// Set the list adapter for the ListView 
		// Discussed in more detail in the user interface classes lesson  
		setListAdapter(new ArrayAdapter<String>(getActivity(),
				R.layout.list_item, QuoteViewerActivity.mTitleArray));

		// If an item has been selected, set its checked state
		if (-1 != mCurrIdx)
			getListView().setItemChecked(mCurrIdx, true);
	}

	// Called when the user selects an item from the List
	@Override
	public void onListItemClick(ListView l, View v, int pos, long id) {
		if (mCurrIdx != pos) {
			mCurrIdx = pos;
			
			// Inform the QuoteViewerActivity that the item in position pos has been selected
			mListener.onListSelection(pos);
		}
		// Indicates the selected item has been checked
		l.setItemChecked(mCurrIdx, true);
	}

	@Override
	public void onDestroy() {
		Log.i(TAG, getClass().getSimpleName() + ":onDestroy()");
		super.onDestroy();
	}

	@Override
	public void onDestroyView() {
		Log.i(TAG, getClass().getSimpleName() + ":onDestroyView()");
		super.onDestroyView();
	}

	@Override
	public void onDetach() {
		Log.i(TAG, getClass().getSimpleName() + ":onDetach()");
		super.onDetach();
	}

	@Override
	public void onPause() {
		Log.i(TAG, getClass().getSimpleName() + ":onPause()");
		super.onPause();
	}

	@Override
	public void onResume() {
		Log.i(TAG, getClass().getSimpleName() + ":onResume()");
		super.onResume();
	}

	@Override
	public void onStart() {
		Log.i(TAG, getClass().getSimpleName() + ":onStart()");
		super.onStart();
	}

	@Override
	public void onStop() {
		Log.i(TAG, getClass().getSimpleName() + ":onStop()");
		super.onStop();
	}
}