ListViewActivity3.java

package com.google.mcommerce.sample.android.chapter04.adapterView;

import android.app.ListActivity;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.ContactsContract.Contacts;
import android.util.Log;
import android.util.SparseBooleanArray;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;

import com.google.mcommerce.sample.android.R;

public class ListViewActivity3 extends ListActivity {
	private static final String TAG = "ListViewActivity3";
	private ListView lv = null;
	private Cursor cursor = null;
	private int idCol = -1;
	private int nameCol = -1;
	private int timesContactedCol = -1;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.c04_list);

		lv = getListView();

		cursor = managedQuery(Contacts.CONTENT_URI, null, null, null,
				Contacts.DISPLAY_NAME + " ASC");

		String[] cols = new String[] { Contacts.DISPLAY_NAME };
		idCol = cursor.getColumnIndex(Contacts._ID);
		nameCol = cursor.getColumnIndex(Contacts.DISPLAY_NAME);
		timesContactedCol = cursor.getColumnIndex(Contacts.TIMES_CONTACTED);

		int[] views = new int[] { android.R.id.text1 };

		SimpleCursorAdapter adapter = new SimpleCursorAdapter(this,
				android.R.layout.simple_list_item_multiple_choice, cursor,
				cols, views);

		this.setListAdapter(adapter);

		lv.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
	}

	public void doClick(View view) {
		int count = lv.getCount();
		SparseBooleanArray viewItems = lv.getCheckedItemPositions();
		for (int i = 0; i < count; i++) {
			if (viewItems.get(i)) {
				// CursorWrapper cw = (CursorWrapper) lv.getItemAtPosition(i);
				cursor.moveToPosition(i);
				long id = cursor.getLong(idCol);
				String name = cursor.getString(nameCol);
				int timesContacted = cursor.getInt(timesContactedCol);
				Log.v(TAG, name + " is checked. Times contacted = "
						+ timesContacted + ". Position = " + i + ". Id = " + id);
			}
		}
	}
}