IOS --- 获取系统信息

1 . 获取项目名称

 [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleExecutableKey] ?: [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleIdentifierKey]

2 . 获取版本号

[[NSBundle mainBundle] infoDictionary][@"CFBundleShortVersionString"] ?: [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleVersionKey]

3 . 获取设备名称

[[UIDevice currentDevice] model]

4 . 获取系统版本

[[UIDevice currentDevice] systemVersion],

5 . 获取屏幕分辨率

[[UIScreen mainScreen] scale]
[[UIScreen main] scale] == 1  代表320 x 480 的分辨率
[[UIScreen main] scale] == 2 代表640 x 960 的分辨率
[[UIScreen main] scale] == 3 代表1242 x 2208 的分辨率

6 . 跳转设置

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
跳转特定设置：
例如：
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=WIFI"]];

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