IOS下使用openUrl下打开不同的系统应用和设置界面

[[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"]]; 
拨打电话时不出现确认框
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"telprompt://800888"]]; 
拨打电话之时弹出确认框

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://[email protected]"]];

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://"]]; //注意后面加上faceTime的账号如：[email protected]

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
//打开关于本机

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General&path=About"]];
 
//打开辅助功能
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General&path=ACCESSIBILITY"]];
 
//设置飞行模式不成功，即设置界面
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=AIRPLANE_MODE"]];
 
//屏幕几分钟之后锁定设置
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General&path=AUTOLOCK"]];
 
//打开Brightness不成功，设置界面
 [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=Brightness"]];
 
  //打开蓝牙设置
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=Bluetooth"]];
 
  //设置日期与时间设置
 [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General&path=DATE_AND_TIME"]];
 
  //打开FaceTime设置
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=FACETIME"]];
 
  //下面是打开通用设置
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General"]];
 
  //打开键盘设置
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General&path=Keyboard"]];
 
  //打开iClound设置
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=CASTLE"]];
 
  //打开iCloud下的储存空间
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=CASTLE&path=STORAGE_AND_BACKUP"]];
 
  //打开通用下的语言和地区设置
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General&path=INTERNATIONAL"]];
 
  //打开隐私下的定位服务
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=LOCATION_SERVICES"]];
 
  //打开设置下的音乐
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=MUSIC"]];
 
  //打开音乐下的均衡器
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=MUSIC&path=EQ"]];
 
  //打开音乐下的什么不成功
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=MUSIC&path=VolumeLimit"]];
 
  //打开通用下的网络不成功
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General&path=Network"]];
 
  //打开通用下的什么不成功
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=NIKE_PLUS_IPOD"]];
 
  //打开设置下的备忘录设置
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=NOTES"]];
 
  //打开设置下的通知设置
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=NOTIFICATIONS_ID"]];
 
  //打开电话设置
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=Phone"]];
 
  //打开设置下照片和相机设置
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=Photos"]];
 
  //打开通用下的描述文件
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General&path=ManagedConfigurationList"]];
 
  //打开通用下的还原设置
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General&path=Reset"]];
 
  //打开设置下的safari设置
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=Safari"]];
 
  //打开siri不成功
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General&path=Assistant"]];
 
  //打开设置下的声音设置
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=Sounds"]];
 
  //打开通用下的软件更新

  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General&path=SOFTWARE_UPDATE_LINK"]];
 
  //打开通用下的iTounes Store和App Store设置
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=STORE"]];
 
  //打开设置下的twitter设置
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=TWITTER"]];
 
  //打开通用下的用量
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General&path=USAGE"]];

  //打开通用下的vpn设置
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General&path=VPN"]];
 
  //打开设置下的墙纸设置
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=Wallpaper"]];
 
  //打开wifi设置
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=WIFI"]];

//打开设置中的隐私
   [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=Privacy"]];

  //打开不成功
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root= INTERNET_TETHERING"]];