ios 通过代码访问手机应用

列子：访问位置信息

-(IBAction)btnSetting:(id)sender{
 NSURL*url=[NSURL URLWithString:@"prefs:root=LOCATION_SERVICES"];
 [[UIApplication sharedApplication] openURL:url];
 }

以下是访问其他应用的代码

 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=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
 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