每个应用都有自己的url scheme，根据这个scheme就可以跳转。 例如微信，可以写 weixin:// 进行跳转
NSURL *url = [NSURL URLWithString:@"weixin://"]; [[UIApplication sharedApplication] openURL:url];那么一些系统应用怎么跳转呢，从Launcher中获得启发，它里面已经提供了系统应用的urlscheme
appstore itms-apps:// 日历 calshow:// 时钟 world clock clock-worldclock:// alarm clock-alarm:// stopwatch clock-stopwatch:// timer clock-timer:// 通讯录 contact:// applewatch itms-watch:// facetime facetime视频 facetime://${PHONE} facetime确认视频 facetime-prompt://${PHONE} facetime音频 facetime-audio://${PHONE} facetime确认音频 facetime-audio-prompt://${PHONE} find friends findmyfriends:// find iphone fmip1:// gamecenter gamecenter:// ibooks ibooks:// iclouddrive iclouddriveapp:// itunes itms:// 邮件 打开邮件app message:// 写邮件 mailto: 发送电子邮件 mailto:${EMAIL}?cc=&subject=${SUBJECT}&body=${BODY} 地图 打开地图app http://maps.apple.com/?q= 获取地图路线 http://maps.apple.com/?saddr=${SADDR}&daddr=&{DADDR} 搜索地图 http://maps.apple.com/?q=${QUERY}&near=${NEAR} 信息 写信息 sms:// 发送信息 sms:${PHONE} 群发信息 launcher://msg?to=${PHONE}&subject=${SUBJECT}&body=${BODY} 音乐 music:// 新闻 applenews:// 备忘录 mobilenotes:// 电话 打开电话app mobilephone:// 拨打电话 tel:${PHONE} 要求确认拨打 telprompt:${PHONE} 照片 photos-redirect:// 播客 pcast:// 提醒事项 x-apple-reminder:// safari x-web-search:// 视频 videos:// 语音备忘录 voicememos:// wallet shoebox:// 天气 weather://?index=0注意，类似${PHONE}这样的代表需要参数，可以设定具体值，
tel:${PHONE} 具体到拨打10086 tel:10086跳转到设置比较特殊，它里面可以有很多细分跳转
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
苹果相关文档 https://developer.apple.com/library/ios/featuredarticles/iPhoneURLScheme_Reference/iPhoneURLScheme_Reference.pdf
