launcher-->LauncherSetting数据库的研究

1.class LauncherSetting{//定义数据的类

    static final class Favorites implements BaseColumns {//一般通过内部类来实现BaseColumns

•  
  • URI定义 
    • static final Uri CONTENT_URI = Uri.parse("content://" +              LauncherProvider.AUTHORITY + "/" + LauncherProvider.TABLE_FAVORITES + "?" + LauncherProvider.PARAMETER_NOTIFY + "=true");
  • 数据库中item项的定义 
    •  static final String ID = "_id";//定义ID
    •  static final String TITLE = "title";//定义title

}

}

2.public class LauncherProvider extends ContentProvider{//定义ContentProvider

•    private static class DatabaseHelper extends SQLiteOpenHelper {//内部定义DatabaseHelper

}

}