1.跳转系统通知

    NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
    if ([[UIApplication sharedApplication] canOpenURL:url]) {
        
        [[UIApplication sharedApplication] openURL:url];

2.跳转系统中指定的url

    (1.)需要先配置plist文件:在URL types--URL Schemes中添加 prefs的字符串.因为苹果在iOS5.0后把系统自带的URL Schemes删除了
    
    //    跳到WIFI界面：
    NSURL *url1=[NSURL URLWithString:@"prefs:root=WIFI"];
    [[UIApplication sharedApplication] openURL:url1];

    (2.)其他的跳转链接
    About — prefs:root=General&path=About  

    Accessibility — prefs:root=General&path=ACCESSIBILITY  

    AirplaneModeOn— prefs:root=AIRPLANE_MODE  

    Auto-Lock — prefs:root=General&path=AUTOLOCK  

    Brightness — prefs:root=Brightness  

    Bluetooth — prefs:root=General&path=Bluetooth

    Date& Time — prefs:root=General&path=DATE_AND_TIME  

    FaceTime — prefs:root=FACETIME

    General— prefs:root=General

    Keyboard — prefs:root=General&path=Keyboard  

    iCloud — prefs:root=CASTLE  iCloud 

   Storage & Backup — prefs:root=CASTLE&path=STORAGE_AND_BACKUP  

   International — prefs:root=General&path=INTERNATIONAL  

   Location Services — prefs:root=LOCATION_SERVICES  

   Music — prefs:root=MUSIC  

   Music Equalizer — prefs:root=MUSIC&path=EQ  

   Music VolumeLimit— prefs:root=MUSIC&path=VolumeLimit  

  Network — prefs:root=General&path=Network  

 Nike + iPod — prefs:root=NIKE_PLUS_IPOD  

 Notes — prefs:root=NOTES  

Notification — prefs:root=NOTIFICATIONS_ID  

Phone — prefs:root=Phone  

Photos — prefs:root=Photos  

Profile — prefs:root=General&path=ManagedConfigurationList  

Reset — prefs:root=General&path=Reset  

Safari — prefs:root=Safari  Siri — prefs:root=General&path=Assistant  

Sounds — prefs:root=Sounds  

SoftwareUpdate— prefs:root=General&path=SOFTWARE_UPDATE_LINK  

Store — prefs:root=STORE  

Twitter — prefs:root=TWITTER  

Usage — prefs:root=General&path=USAGE  

VPN — prefs:root=General&path=Network/VPN  

Wallpaper — prefs:root=Wallpaper  

Wi-Fi — prefs:root=WIFI

Setting—prefs:root=INTERNET_TETHERING