[Symbian项目进展]系统设置搞掂 :) 把相关代码贴出来

千辛万苦，我的系统设置模块终于搞定。

系统设置包括：

1、日志文件大小
2、开机是否自动运行
3、是否记录日志
4、没有规则匹配时的动作：放行/拒绝/通知用户，由用户来决定

实现：

用设置列表来实现，分别使用：

1、EAknCtIntegerEdwin ：设置数字类型
2、EAknCtPopupSettingList ：Yes/No两种选择
3、EAknCtPopupSettingList ：Yes/No两种选择
4、EAknCtPopupSettingList ：Enable/Disable/ToUser三种选择

资源代码：

//-----------------------------------------------------------------------------
//
//    r_firewall_setting_itemlist
//    防火墙设置列表
//
//-----------------------------------------------------------------------------
//
RESOURCE AVKON_SETTING_ITEM_LIST R_FIREWALL_SETTING_ITEMLIST
    {
    flags = EAknSettingItemNumberedStyle ;
    title = SETTING_ITEM_LIST_TITLE ;
    items =
        {
        AVKON_SETTING_ITEM
            {
            identifier = ESettingItemSizeLogFile ;                                //日志文件大小
            setting_page_resource = R_FIREWALL_SETTING_PAGE_SIZE_LOGFILE ;
            name = str_firewall_setting_title_size_logfile ;
            },
        AVKON_SETTING_ITEM
            {
            identifier = ESettingItemIsRecordLog ;                                //是否记录日志
            setting_page_resource = R_FIREWALL_SETTING_PAGE_IS_RECORD_LOG ;
            associated_resource = R_FIREWALL_SETTING_IS_RECORD_LOG_TEXTS;
            name = str_firewall_setting_title_is_record_log ;
            },
        AVKON_SETTING_ITEM
            {
            identifier = ESettingItemIsAutostart ;                                //开机是否自启动
            setting_page_resource = R_FIREWALL_SETTING_PAGE_IS_AUTOSTART ;
            associated_resource = R_FIREWALL_SETTING_IS_AUTOSTART_TEXTS;
            name = str_firewall_setting_title_is_autostart ;
            },
        AVKON_SETTING_ITEM
            {
            identifier = ESettingItemDefaultAction ;                            //无规则匹配动作
            setting_page_resource = r_firewall_setting_page_default_action ;
            associated_resource = r_firewall_setting_list_default_action ;
            name = str_firewall_setting_title_default_action ;
            }
        };
    }
//-----------------------------------------------------------------------------
//
//    R_FIREWALL_SETTING_PAGE_SIZE_LOGFILE
//    防火墙设日志文件大小设置页
//
//-----------------------------------------------------------------------------
//
RESOURCE AVKON_SETTING_PAGE R_FIREWALL_SETTING_PAGE_SIZE_LOGFILE
    {
    number = 0;
    label = str_firewall_setting_page_label_size_logfile;
    type = EAknCtIntegerEdwin;
    editor_resource_id = R_FIREWALL_SETTING_SIZE_LOGFILE_EDWIN;
    }
RESOURCE AVKON_INTEGER_EDWIN R_FIREWALL_SETTING_SIZE_LOGFILE_EDWIN
    {
    min = KFirewallSettingSizeLogFileMin ;
    max = KFirewallSettingSizeLogFileMax ;
    }
//-----------------------------------------------------------------------------
//
//    R_FIREWALL_SETTING_PAGE_IS_RECORD_LOG
//    防火墙是否记录日志设置页
//
//-----------------------------------------------------------------------------
//

RESOURCE AVKON_SETTING_PAGE R_FIREWALL_SETTING_PAGE_IS_RECORD_LOG
    { 
    number= 0;
    label= str_firewall_setting_page_label_is_record_log ;
    type = EAknCtPopupSettingList;
    //editor_resource_id = r_setting_app_on_off_popup_setting_list;
    }
RESOURCE AVKON_POPUP_SETTING_TEXTS R_FIREWALL_SETTING_IS_RECORD_LOG_TEXTS
    {
    flags = 0;
    setting_texts_resource = R_AKNEXSETTINGLIST_ON_OFF_TEXTS;
    popped_up_texts_resource = R_AKNEXSETTINGLIST_POPPED_UP_ON_OFF_TEXTS;
    }
RESOURCE ARRAY R_AKNEXSETTINGLIST_ON_OFF_TEXTS
    {
    items =
        {
        AVKON_ENUMERATED_TEXT { value=1; text = str_firewall_setting_is_record_log_on ; },
        AVKON_ENUMERATED_TEXT { value=0; text = str_firewall_setting_is_record_log_off ; }
        };
    }
RESOURCE ARRAY R_AKNEXSETTINGLIST_POPPED_UP_ON_OFF_TEXTS
    {
    items =
        {
        LBUF { txt = str_firewall_setting_is_record_log_enabled; },
        LBUF { txt = str_firewall_setting_is_record_log_disabled; }
        };
    }
    
//-----------------------------------------------------------------------------
//
//    R_FIREWALL_SETTING_PAGE_IS_AUTOSTART
//    防火墙是否记录日志设置页
//
//-----------------------------------------------------------------------------
//
RESOURCE AVKON_SETTING_PAGE R_FIREWALL_SETTING_PAGE_IS_AUTOSTART
    { 
    number= 0;
    label= str_firewall_setting_page_label_is_autostart ;
    type = EAknCtPopupSettingList;
    //editor_resource_id = r_setting_app_on_off_popup_setting_list;
    }
RESOURCE AVKON_POPUP_SETTING_TEXTS R_FIREWALL_SETTING_IS_AUTOSTART_TEXTS
    {
    flags = 0;
    setting_texts_resource = R_AKNEXSETTINGLIST_ON_OFF_TEXTS;
    popped_up_texts_resource = R_AKNEXSETTINGLIST_POPPED_UP_ON_OFF_TEXTS;
    }
//-----------------------------------------------------------------------------
//
//    R_FIREWALL_SETTING_PAGE_DEFAULT_ACTION
//    防火墙无匹配规则默认动作设置页
//
//-----------------------------------------------------------------------------
//
RESOURCE AVKON_SETTING_PAGE r_firewall_setting_page_default_action
    {   
    number= 0;
    label= str_firewall_setting_page_label_default_action ;
    type = EAknCtPopupSettingList ;
    editor_resource_id = r_firewall_setting_list_new_entry_default_action ;
    }
RESOURCE POPUP_SETTING_LIST r_firewall_setting_list_new_entry_default_action
    {
    //flags = EAknPopupSettingListFlagAllowsUserDefinedEntry ;
    flags = EAknPopupSettingListFlagInitialised ;
    }
RESOURCE AVKON_POPUP_SETTING_TEXTS r_firewall_setting_list_default_action
    {
    setting_texts_resource = r_firewall_setting_texts_resource_default_action;
    popped_up_texts_resource = r_firewall_setting_popped_up_texts_resource_default_action ;
    }
RESOURCE ARRAY r_firewall_setting_texts_resource_default_action
    {
    items =
        {
        AVKON_ENUMERATED_TEXT
            {
            value = 0;
            text = str_firewall_setting_default_action_0;
            },
        AVKON_ENUMERATED_TEXT
            {
            value = 1;
            text = str_firewall_setting_default_action_1;
            },
        AVKON_ENUMERATED_TEXT
            {
            value = 2;
            text = str_firewall_setting_default_action_2;
            }
        };
    }
RESOURCE ARRAY r_firewall_setting_popped_up_texts_resource_default_action
    {
    items =
        {
        LBUF
            {
            txt = str_firewall_setting_default_action_0;
            },
        LBUF
            {
            txt = str_firewall_setting_default_action_1;
            },
        LBUF
            {
            txt = str_firewall_setting_default_action_2;
            }
        };
    }

存取文件代码：

void CFirewallSettingData::SaveSettingL()
    {
    RFs iFs ; 
    User::LeaveIfError(iFs.Connect()) ; 
    RFileWriteStream writer;
    writer.PushL();
    User::LeaveIfError(writer.Replace(iFs, KFirewallSettingFileName, EFileWrite)); //����ݿ���д���
    TInt32 len = 0;

    writer.WriteInt32L(iSizeOfLogfile);                    //保存日志文件长度
    writer.WriteInt32L(iDefaultAction);                    //保存无规则匹配动作
    writer.WriteInt32L(iIsRecordLog);                    //保存是否记录日志
    writer.WriteInt32L(iIsAutoStart);                    //保存开机是否自启动

    writer.CommitL();                                             
    CleanupStack::PopAndDestroy(); 
    iFs.Close() ;
    }
    
void CFirewallSettingData::ReadSettingL()
    {
    RFs iFs ; 
    RFile iFile ; 
    User::LeaveIfError(iFs.Connect()) ; 
    User::LeaveIfError(iFile.Open(iFs, KFirewallSettingFileName, EFileRead));  

    TInt iSize = 0 ;
    iFile.Size(iSize) ; 
    if(iSize <= 0)
        {
        iFs.Close() ; 
        SetDefaultValue() ;                                    //如果文件为空则设置默认值
        return ;                                                         
        }
    RFileReadStream reader;
    reader.PushL() ;
    reader.Attach(iFile) ;

    iSizeOfLogfile = reader.ReadInt32L();                //读取日志文件长度
    iDefaultAction = reader.ReadInt32L();                //读取无规则匹配动作
    iIsRecordLog = reader.ReadInt32L();                    //读取是否记录日志
    iIsAutoStart = reader.ReadInt32L();                    //读取开机是否自启动

    if (!iSizeOfLogfile)    //判断如果日志文件为0，用默认设置
        {
        SetDefaultValue() ;
        }        
    CleanupStack::PopAndDestroy(); 
    iFs.Close() ; 
    }

关键代码：

必须要在SettingList类中重载EditItemL函数，使的编辑过的数据能够保存到CFirewallSettingData类的实例iData中：

void CFirewallSettingList::EditItemL(TInt aIndex, TBool aCalledFromMenu)
 {
 CAknSettingItemList::EditItemL(aIndex, aCalledFromMenu) ;
 (*SettingItemArray())[aIndex]->StoreL() ;
 }