Simulator allows you to rapidly prototype and test builds of your app during development. It provides tools to manage simulator devices, install and launch apps, pass arguments, and test in different configurations and languages. The simctl command can be used to control simulators, while Xcode builds and deploys apps to the simulator.

1. Simulator

2. Simulator
Tips & Tricks
CLI, simctl
Testing
Demo

3. Simulator allows you to rapidly prototype and
test builds of your app during the development process.

5. open -a Simulator
open /Applications/Xcode.app/Contents/Developer/Applications/Simulator.app/
open -a Simulator --args -CurrentDeviceUDID $UDID

10. sudo mkdir /AppleInternal

11. Allow Fullscreen Mode

14. Show Chrome UI Rects

22. $ xcrun simctl list
$ xcrun simctl list devicetypes
$ xcrun simctl list -j runtimes
$ xcrun simctl list devices | grep Booted
xcrun simctl list [-j | ——json] [devices|devicetypes|runtimes|pairs]

24. xcrun simctl delete <device> [… <device n>] | unavailable
$ xcrun simctl delete 1418D7BD-CD6E-4C8A-AF95-580680AD5B2A
Delete

25. $ cd /Library/Developer/CoreSimulator/Profiles/Runtimes
$ sudo rm -rf <iOS version>.simruntime

26. $ xcrun simctl delete unavailable
2.72 GB

28. $ xcrun simctl create 'Giftbott X' <- name
com.apple.CoreSimulator.SimDeviceType.iPhone-X <- device type id
com.apple.CoreSimulator.SimRuntime.iOS-11-1 <- runtime id
xcrun simctl create <name> <device type id> <runtime id>

30. $ xcrun simctl rename 9E7DEEE4-035D-4CBC-B468-61D4D62618E7 'mySimulator'
xcrun simctl rename <device> <name>
xcrun simctl clone <device> <new name>
$ xcrun simctl clone 9E7DEEE4-035D-4CBC-B468-61D4D62618E7 'iPhone SE clone'

31. $ xcrun simctl boot A08C8834-1547-4EBB-BD3E-06D3732830F7
xcrun simctl boot <device> [-disabledJob=<job>] [-disabledJob=<job>]
xcrun simctl shutdown <device> | all
Booted / Shutdown
$ xcrun simctl shutdown A08C8834-1547-4EBB-BD3E-06D3732830F7
$ xcrun simctl shutdown all

32. $ xcodebuild ~~~ —sdk iphonesimulator
$ xcrun simctl install booted [Build Path]/GiftbotSimulator.app
xcrun simctl install <device> <path>
xcrun simctl uninstall <device> <app identifier>
Uninstall
Install
$ xcrun simctl uninstall booted kr.giftbot.example.GiftbotSimulator

33. $ xcrun simctl launch booted kr.giftbot.example
$ xcrun simctl launch ——console booted kr.giftbot.example
$ xcrun simctl launch booted kr.giftbot.example -AppleLocale "en_US"
-AppleLanguages "(ko)" -NSShowNonLocalizedStrings YES
$ xcrun simctl launch booted kr.giftbot.example -foo "['1', '2']" bar
xcrun simctl launch [-w | ——wait—for—debugger] [——console] [——stdout=<path>]
[——stderr=<path>] <device> <app identifier> [<argv 1> … <argv n>]
xcrun simctl terminate <device> <app identifier>
$ xcrun simctl terminate booted kr.giftbot.example

34. $ xcrun simctl erase A08C8834-1547-4EBB-BD3E-06D3732830F7
$ xcrun simctl erase all
// Unable to erase in Booted state
$ xcrun simctl shutdown <device> && xcrun simctl erase <device>
xcrun simctl erase <device> [… <device n>] | all
erase

35. screenshot [--type=<type>] [--display=<display>] <file or url>
$ xcrun simctl io booted screenshot ——type=jpeg image.jpeg
$ xcrun simctl io booted screenshot ——display=external image.png
recordVideo [--type=<type>] [--display=<display>] <file or url>
$ xcrun simctl io booted recordVideo ——type="mp4" SwiftKorea.mp4
$ xcrun simctl io 90D0D799-69BA-4800-8682-1533100CDD7B recordVideo sim.mp4
xcrun simctl io <device> <operation> <arguments>

36. $ xcrun simctl keyboard booted ko
$ xcrun simctl keyboard booted ja
xcrun simctl keyboard <device> <language>
Add

37. $ xcrun simctl openurl booted https://google.com/search?q=SwiftKorea
$ xcrun simctl openurl booted https://swiftkorea.github.io/meetup/2
xcrun simctl openurl <device> <URL>

38. xcrun simctl <addmedia | addphoto | addvideo> <device> <path> [… <path>]
$ xcrun simctl addmedia booted ~/image.jpeg
$ xcrun simctl addmedia booted ~/video.mp4 ~/image.png …
$ xcrun simctl addphoto booted ~/Desktop/image.jpeg
$ xcrun simctl addvideo booted ~/movie/video.mp4
addmedia

39. $ xcrun simctl listapps booted
$ xcrun simctl listapps booted | grep '"com.apple.*" = ' | grep -o '".*"'
$ xcrun simctl listapps booted | sed -n '1,/kr.giftbot/!p' | sed -n '1,14p'
xcrun simctl listapps <device>

40. $ xcrun simctl appinfo booted kr.giftbot.example.GiftbotSimulator
xcrun simctl appinfo <device> <bundle identifier>

41. $ xcrun simctl spawn booted log stream
$ xcrun simctl spawn booted log stream --type=activity
--style=json —timeout=1m
$ xcrun simctl spawn booted log stream --predicate 'processID == 50854 and
messageType == info'
$ xcrun simctl spawn booted log stream --predicate "eventMessage contains
'Giftbot' and messageType == debug and eventType == logEvent"
$ xcrun simctl spawn booted log collect
xcrun simctl spawn [-w | --wait-for-debugger] [-s | --standalone] [-a <arch> |
--arch=<arch>] <device> <path to executable> [<argv 1> <argv 2> ... <argv n>]

42. bootstatus
darwinup
diagnose
get_app_container
getenv
icloud_sync
logverbose
monitor
notify_post
notify_get_state / notify_set_state
pair / unpair
pair_activate
pbinfo / pbsync
pbcopy / pbpaste
register / unregister
upgrade

44. $ xcrun simctl list devices

45. $ xcrun simctl list devices
| sed -n '{ 1,/iOS 10/d; /iPhone 6s/p; }'

46. $ xcrun simctl list devices
| sed -n '{ 1,/iOS 10/d; /iPhone 6s/p; }'
| egrep -o '([A-Z0-9-]*){36}'

47. $ xcrun simctl list devices
| sed -n '{ 1,/iOS 10/d; /iPhone 6s/p; }'
| egrep -o '([A-Z0-9-]*){36}'
| xargs -I udid xcrun simctl boot udid

49. $ xcrun simctl list devices
| grep 'iPhone [8X]'
| awk -F "[()]" '{ print $2 }'
| xargs -I udid xcrun simctl shutdown udid
$ list=(`xcrun simctl list devices
| awk '/iPhone/{ if ($2 > 7 && $2 != "SE") print $(NF-1) }'
| cut -c 2-37`)
$ for udid in $list; do
xcrun simctl shutdown $udid
done

50. $ xcrun simctl list devices
| grep -i 'iphone.*plus'
| tail -n 4
| grep -v Booted
| awk -F "[()]" '{ print $2 }'
| xargs -I udid xcrun simctl erase udid
$ xcrun simctl list devices
| grep Shutdown
| egrep -o '[A-Z0-9-]{36}'
| tail -n 4
| xargs -I udid xcrun simctl erase udid

51. Case 1. Localization
Case 4. Devices
Case 5. Network
Case 2. Arguments
Case 3. Configurations

52. Shutdown
List
Create / Clone
Boot
[ 1 ]

53. Shutdown
List
Create / Clone
Boot
Build
Install
Launch
Test
[ 1 ] [ 2 ]

54. Shutdown
List
Create / Clone
Boot
Build
Install
Launch
Test
Terminate
Shutdown
Erase / Delete
[ 1 ] [ 3 ][ 2 ]

56. [ Simulator 1 ] - English + Locale(US)
[ Simulator 2 ] - Korean
[ Simulator 3 ] - Japanese
[ Simulator 4 ] - Base + DoubleLocalizedString + RightToLeftWritingDirection

57. [ Simulator 1 ] - English + Locale(US)
[ Simulator 2 ] - Korean
[ Simulator 3 ] - Japanese
[ Simulator 4 ] - Base + DoubleLocalizedString + RightToLeftWritingDirection
$ xcrun simctl launch <device> <bundle id> [<argv 1> ...]

58. [ Simulator 1 ] - English + Locale(US)
[ Simulator 2 ] - Korean
[ Simulator 3 ] - Japanese
[ Simulator 4 ] - Base + DoubleLocalizedString + RightToLeftWritingDirection
$ xcrun simctl launch booted kr.giftbot.example [<argv 1> ...]
[ 1 ] -AppleLanguages "(en)" -AppleLocale "en_US"
[ 2 ] -AppleLanguages "(ko)"
[ 3 ] -AppleLanguages "(ja)"
[ 4 ] -NSDoubleLocalizedString YES -NSForceRightToLeftWritingDirection YES

60. $ xcrun simctl launch booted kr.giftbot.example foo bar -swift true

61. let args = ProcessInfo.processInfo.arguments
for (idx, arg) in args.enumerated() {
print("idx : (idx), argument : (arg)")
}
$ xcrun simctl launch booted kr.giftbot.example foo bar -swift true

62. let args = ProcessInfo.processInfo.arguments
for (idx, arg) in args.enumerated() {
print("idx : (idx), argument : (arg)")
}
$ xcrun simctl launch booted kr.giftbot.example foo bar -swift true
idx : 0, argument : <appPath>/<scheme>
idx : 1, argument : foo
idx : 2, argument : bar
idx : 3, argument : -swift
idx : 4, argument : true

63. -Argument => UserDefaults
let isSwift = UserDefaults.standard.bool(forKey: "swift")
print(isSwift) // true

64. -Argument => UserDefaults
let isSwift = UserDefaults.standard.bool(forKey: "swift")
print(isSwift) // true
-arr "( 'Swift', 'Korea', 'Giftbot', 'Simulator Customizing & Testing' )"
-dict "{ 'Swift'='Korea'; '2nd'='Meetup'; 'Hi'='Nice to meet you'; }"
-xml "<dict><key>foo</key><string>bar</string></dict>"
let arrArg = UserDefaults.standard.array(forKey: "arr")
let dictArg = UserDefaults.standard.dictionary(forKey: “dict")
let xmlArg = UserDefaults.standard.object(forKey: "xml")

69. $ xcodebuild
-project <project path>
—scheme <scheme>
-sdk iphonesimulator
-configuration < Debug / Beta / Release >

70. $ xcodebuild
-project [projectPath]
—scheme [scheme]
-sdk iphonesimulator
-configuration [ Debug / Beta / Release ]
$ xcrun simctl install booted
[Build Path]/Build/[Configuration]-iphonesimulator/[App Name].app
$ xcodebuild
-project <project path>
—scheme <scheme>
-sdk iphonesimulator
-configuration < Debug / Beta / Release >
$ xcrun simctl install booted
[Build Path]/Build/<configuration>-iphonesimulator/<app name>.app

71. $ xcodebuild
-project <project path>
—scheme <scheme>
-sdk iphonesimulator
-configuration < Debug / Beta / Release >
$ xcrun simctl install booted
[Build Path]/Build/<configuration>-iphonesimulator/<app name>.app
$ xcrun simctl launch <device> <bundle identifier>

73. xcrun simctl list devices | egrep ~ blah blah ~