>=ios8 应用内跳转到系统设置界面-openURL

1     NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
2     if ([[UIApplication sharedApplication] canOpenURL:url]) {
3         [[UIApplication sharedApplication] openURL:url];
4     }else{
5      
6     }

1 //location
2     NSURL *url = [NSURL URLWithString:@"prefs:root=LOCATION_SERVICES"];
3     if ([[UIApplication sharedApplication] canOpenURL:url]) {
4         [[UIApplication sharedApplication] openURL:url];
5     }else{
6         NSLog(@"there....");
7     }

 1 About — prefs:root=General&path=About  
 2 Accessibility — prefs:root=General&path=ACCESSIBILITY  
 3 Airplane Mode On — prefs:root=AIRPLANE_MODE  
 4 Auto-Lock — prefs:root=General&path=AUTOLOCK  
 5 Brightness — prefs:root=Brightness  
 6 Bluetooth — prefs:root=General&path=Bluetooth  
 7 Date & Time — prefs:root=General&path=DATE_AND_TIME  
 8 FaceTime — prefs:root=FACETIME  
 9 General — prefs:root=General  
10 Keyboard — prefs:root=General&path=Keyboard  
11 iCloud — prefs:root=CASTLE  
12 iCloud Storage & Backup — prefs:root=CASTLE&path=STORAGE_AND_BACKUP  
13 International — prefs:root=General&path=INTERNATIONAL  
14 Location Services — prefs:root=LOCATION_SERVICES  
15 Music — prefs:root=MUSIC  
16 Music Equalizer — prefs:root=MUSIC&path=EQ  
17 Music Volume Limit — prefs:root=MUSIC&path=VolumeLimit  
18 Network — prefs:root=General&path=Network  
19 Nike + iPod — prefs:root=NIKE_PLUS_IPOD  
20 Notes — prefs:root=NOTES  
21 Notification — prefs:root=NOTIFICATIONS_ID  
22 Phone — prefs:root=Phone  
23 Photos — prefs:root=Photos  
24 Profile — prefs:root=General&path=ManagedConfigurationList  
25 Reset — prefs:root=General&path=Reset  
26 Safari — prefs:root=Safari  
27 Siri — prefs:root=General&path=Assistant  
28 Sounds — prefs:root=Sounds  
29 Software Update — prefs:root=General&path=SOFTWARE_UPDATE_LINK  
30 Store — prefs:root=STORE  
31 Twitter — prefs:root=TWITTER  
32 Usage — prefs:root=General&path=USAGE  
33 VPN — prefs:root=General&path=Network/VPN  
34 Wallpaper — prefs:root=Wallpaper  
35 Wi-Fi — prefs:root=WIFI  
36 Setting —prefs:root=INTERNET_TETHERING