Android添加书签(二)

运行结果:
 

Bookmarker.java:
Java代码 
package com.iaiai; 
 
import android.app.Activity; 
import android.app.AlertDialog; 
import android.app.Dialog; 
import android.content.ContentResolver; 
import android.content.ContentValues; 
import android.content.DialogInterface; 
import android.content.Intent; 
import android.content.SharedPreferences; 
import android.net.Uri; 
import android.os.Bundle; 
import android.provider.Browser; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemClickListener; 
import android.widget.ImageButton; 
import android.widget.ListView; 
 
/**
 * 
 * <p>
 * Title: Bookmarker.java
 * </p>
 * <p>
 * E-Mail: 176291935@qq.com
 * </p>
 * <p>
 * QQ: 176291935
 * </p>
 * <p>
 * Http: iaiai.iteye.com
 * </p>
 * <p>
 * Create time: 2011-8-29
 * </p>
 * 
 * @author 丸子
 * @version 0.0.1
 */ 
public class Bookmarker extends Activity implements OnItemClickListener, 
        OnClickListener { 
     
    /** Called when the activity is first created. */ 
    private ListView mListView; 
    private BookmarkAdapter bookmarkAdapter; 
    private ImageButton upButton; 
    private ImageButton downButton; 
    private ImageButton deleteButton; 
    private ImageButton launchButton; 
    private ImageButton topButton; 
    private ImageButton bottomButton; 
    private static final int DIALOG_YES_NO_MESSAGE = 1; 
    private static final int DIALOG_WELCOME = 2; 
    private int currentPos = -1; 
 
    private static final String PREFS_NAME = "BookmarkerPrefs"; 
    private static final String LAUNCHED_KEY = "LAUNCHED"; 
    private static final int MENU_ABOUT = 0; 
    private static final int MENU_ADD = 1;