(IPhone/iPad) Code call the positioning service in "Settings" and other system-related function settings

Http://blog.csdn.net/andypan1314/article/details/7218026

When you run the software for the first time after installation, the system prompts you whether to allow the software to obtain the current location. If you do not allow the software, the system does not prompt you to set the location during later running, which is inconvenient, the solution is to give the user an option to call up the "set" positioning service option on the iPhone, which is manually set by the user. The code for locating the service in the "Settings" of the system is called as follows:

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1. -(Ibaction) btnsetting :( ID) sender {
2. Nsurl * url = [nsurl urlwithstring: @ "prefs: Root = location_services"];
3. [[Uiapplication sharedapplication] Openurl: url];
4. }

There are other commands that call system settings:

[Font =]
About-prefs: Root = General & Path = about

Accessibility-prefs: Root = General & Path = accessibility

Airplane Mode on-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 volume limit-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 = icationications_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

Software Update-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

The relevant call code is the same as the preceding example.

Reference: http://www.cocoachina.com/newbie/basic/2012/0116/3878.html