iOS 打开应用与系统功能的调用

[[UIApplication sharedApplication] openURL:url];

通过给url不同的值,可以实现调用系统自带 电话/短信/邮箱/浏览器/...
 
1、调用 电话phone
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel://800888"]]; 
拨打电话之后不跳转回app
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"telprompt://800888"]]; 
拨打电话之后跳转回app
 
2、调用自带 浏览器safari
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://www.abt.com"]]; 
 
3、调用 自带Mail
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"mailto://admin@abt.com"]]; 
 
4、调用 SMS
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"sms://800888"]]; 
 
5、调用 app Store
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"itms-apps://"]]; 
 
6、调用 iBook
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"itms-books://"]]; 
 
7、调用 Map
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"maps://"]]; 
 
8、调用 Facetime
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"facetime://"]]; 
 
9、调用 Music
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"music://"]]; 
 
10、跳转到系统设置相关界面
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=WIFI"]];
 
以下为设置的跳转关键字
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 
INTERNET_TETHERING Internet_tethering — prefs:root= INTERNET_TETHERING
原文地址:https://www.cnblogs.com/fuunnyy/p/5279402.html