cursor loader and list fragment in android.

AndroidManifest.xml

    <uses-permission android:name="android.permission.READ_CONTACTS" />

ContactsFragment.java

import android.database.Cursor;
import android.os.Bundle;
import android.provider.ContactsContract.Contacts;
import android.support.v4.app.ListFragment;
import android.support.v4.app.LoaderManager.LoaderCallbacks;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.support.v4.widget.SimpleCursorAdapter;

public class ContactsFragment extends ListFragment implements
		LoaderCallbacks<Cursor> {
	private SimpleCursorAdapter mAdapter;

	@Override
	public void onActivityCreated(Bundle savedInstanceState) {
		super.onActivityCreated(savedInstanceState);
		setEmptyText("No phone numbers");

		mAdapter = new SimpleCursorAdapter(getActivity(),
				android.R.layout.simple_list_item_2, null, new String[] {
						Contacts.DISPLAY_NAME, Contacts.CONTACT_STATUS },
				new int[] { android.R.id.text1, android.R.id.text2 }, 0);
		setListAdapter(mAdapter);

		getLoaderManager().initLoader(0, null, this);
	}

	@Override
	public Loader<Cursor> onCreateLoader(int id, Bundle args) {
		String[] projection = { Contacts._ID, Contacts.DISPLAY_NAME,
				Contacts.CONTACT_STATUS };
		return new CursorLoader(getActivity(), Contacts.CONTENT_URI,
				projection, null, null, null);
	}

	@Override
	public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
		mAdapter.swapCursor(cursor);
	}

	@Override
	public void onLoaderReset(Loader<Cursor> loader) {
		mAdapter.swapCursor(null);
	}
}