ListViewActivity4.java

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

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

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

public class ListViewActivity4 extends ListActivity {
	private static final String TAG = "ListViewActivity4";
	private SimpleCursorAdapter adapter = null;
	private ListView lv = null;

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

		lv = getListView();

		String[] projection = new String[] { Contacts._ID,
				Contacts.DISPLAY_NAME };
		Cursor c = managedQuery(Contacts.CONTENT_URI, projection, null, null,
				Contacts.DISPLAY_NAME);

		String[] cols = new String[] { Contacts.DISPLAY_NAME };
		int[] views = new int[] { android.R.id.text1 };

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

		this.setListAdapter(adapter);

		lv.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
	}

	public void doClick(View view) {
		if (!adapter.hasStableIds()) {
			Log.v(TAG, "Data is not stable");
			return;
		}
		long[] viewItems = lv.getCheckedItemIds();
		for (int i = 0; i < viewItems.length; i++) {
			Uri selectedPerson = ContentUris.withAppendedId(
					Contacts.CONTENT_URI, viewItems[i]);

			Log.v(TAG, selectedPerson.toString() + " is checked.");
		}
	}
}