- ProcessInfo : The process information agent can return information such as arguments, environment variables, host name, and process name. The processInfo class method returns the shared agent for the current process—that is, the process whose object sent the message. For example, the following line returns the NSProcessInfo object, which then provides the name of the current process
- How can you use it?
- Korean Description : Korean Description Link
- iOS 2.0+
Let's take a look at the processInfo of swift. This is a sample source and description.
Using the method of sending Arguments when running the app, try to test how to build the conditions in the build test, and check how to output the keys.
It can be set in run, so it does not apply to archive. So it is useful for testing.
sources
- ViewController.swift
@IBOutlet weak var testLabel: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
// Samples Case 01
useArgumentsPassedOnLaunch()
// Samples Case 02
printProcessInfoEnvironmentKeyAndValue()
}
func useArgumentsPassedOnLaunch() {
// TEST Setting 1
if ProcessInfo.processInfo.arguments.contains("TEST_SELF_VIEW_BACKGROUND_COLOR") {
self.view.backgroundColor = #colorLiteral(red: 0.4666666687, green: 0.7647058964, blue: 0.2666666806, alpha: 1)
}
// TEST Setting 2
if ProcessInfo.processInfo.arguments.contains("TEST_SELF_LABEL_TEXT") {
testLabel.text = "TEST"
}
}
func printProcessInfoEnvironmentKeyAndValue() {
// View key and value log
for (key, value) in ProcessInfo.processInfo.environment {
print(">>>> \(key): \(value)")
}
}Use "Arguments Passed On Launch"
- It seems to be a convenient way to actually use it. By modifying the checks of the Arguments of the schema without modifying the code, you can see the changes and options given in the development.
- It is better to use it with the "active compilation flag".
Arguments Setting
| Setting (1/2) | Setting (2/2) |
|---|---|
 |
 |
- If nothing is set
| Arguments Setting | Viewing |
|---|---|
 |
 |
- First set test
| Arguments Setting | Viewing |
|---|---|
 |
 |
- second set test
| Arguments Setting | Viewing |
|---|---|
 |
 |
- last set test
| Arguments Setting | Viewing |
|---|---|
 |
 |
Let's see what information is output by key and value.
- run function
func printProcessInfoEnvironmentKeyAndValue() {
// View key and value log
for (key, value) in ProcessInfo.processInfo.environment {
print(">>>> \(key): \(value)")
}
}- print result (in simulator:iPhone 8 Plus)
>>>> __XPC_DYLD_FRAMEWORK_PATH: /Users/clintjang/Library/Developer/Xcode/DerivedData/JWSProcessInfoSample-evdzffmjhsdbdkdsqjhqkkphmnjc/Build/Products/Debug-iphonesimulator
>>>> DYLD_ROOT_PATH: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot
>>>> SIMULATOR_AUDIO_DEVICES_PLIST_PATH: /Users/clintjang/Library/Developer/CoreSimulator/Devices/6A2A94FC-74F0-47AC-847A-5F583E63430D/data/var/run/com.apple.coresimulator.audio.plist
>>>> SIMULATOR_MAINSCREEN_WIDTH: 1242
>>>> IPHONE_SHARED_RESOURCES_DIRECTORY: /Users/clintjang/Library/Developer/CoreSimulator/Devices/6A2A94FC-74F0-47AC-847A-5F583E63430D/data
>>>> SIMULATOR_AUDIO_SETTINGS_PATH: /Users/clintjang/Library/Developer/CoreSimulator/Devices/6A2A94FC-74F0-47AC-847A-5F583E63430D/data/var/run/simulatoraudio/audiosettings.plist
>>>> DYLD_LIBRARY_PATH: /Users/clintjang/Library/Developer/Xcode/DerivedData/JWSProcessInfoSample-evdzffmjhsdbdkdsqjhqkkphmnjc/Build/Products/Debug-iphonesimulator:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/introspection
>>>> SIMULATOR_MAINSCREEN_SCALE: 3.000000
>>>> DYLD_FALLBACK_FRAMEWORK_PATH: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks
>>>> SIMULATOR_MEMORY_WARNINGS: /Users/clintjang/Library/Developer/CoreSimulator/Devices/6A2A94FC-74F0-47AC-847A-5F583E63430D/data/var/run/memory_warning_simulation
>>>> CLASSIC: 0
>>>> SIMULATOR_MAINSCREEN_HEIGHT: 2208
>>>> SIMULATOR_HID_SYSTEM_MANAGER: /Library/Developer/PrivateFrameworks/CoreSimulator.framework/Resources/Platforms/iphoneos/Library/Frameworks/SimulatorHID.framework
>>>> IPHONE_SIMULATOR_ROOT: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot
>>>> XPC_SIMULATOR_LAUNCHD_NAME: com.apple.CoreSimulator.SimDevice.6A2A94FC-74F0-47AC-847A-5F583E63430D
>>>> XPC_FLAGS: 0x0
>>>> SIMULATOR_DEVICE_NAME: iPhone 8 Plus
>>>> XPC_SERVICE_NAME: UIKitApplication:kr.co.clintjang.JWSProcessInfoSample[0xd43f][19064]
>>>> SIMULATOR_LEGACY_ASSET_SUFFIX: iphone
>>>> SIMULATOR_RUNTIME_VERSION: 11.2
>>>> SIMULATOR_LOG_ROOT: /Users/clintjang/Library/Logs/CoreSimulator/6A2A94FC-74F0-47AC-847A-5F583E63430D
>>>> PATH: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/bin:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/bin:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/sbin:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/sbin:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/local/bin
>>>> TESTMANAGERD_SIM_SOCK: /private/tmp/com.apple.launchd.0kywxbpXsL/com.apple.testmanagerd.unix-domain.socket
>>>> SIMULATOR_SHARED_RESOURCES_DIRECTORY: /Users/clintjang/Library/Developer/CoreSimulator/Devices/6A2A94FC-74F0-47AC-847A-5F583E63430D/data
>>>> SIMULATOR_VERSION_INFO: CoreSimulator 494.33 - Device: iPhone 8 Plus - Runtime: iOS 11.2 (15C107) - DeviceType: iPhone 8 Plus
>>>> SIMULATOR_RUNTIME_BUILD_VERSION: 15C107
>>>> SIMULATOR_CAPABILITIES: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/DeviceTypes/iPhone 8 Plus.simdevicetype/Contents/Resources/capabilities.plist
>>>> NSUnbufferedIO: YES
>>>> SIMULATOR_MAINSCREEN_PITCH: 461.000000
>>>> HOME: /Users/clintjang/Library/Developer/CoreSimulator/Devices/6A2A94FC-74F0-47AC-847A-5F583E63430D/data/Containers/Data/Application/132D6DCC-2A9F-4EC4-AD68-354B521C2207
>>>> OS_ACTIVITY_DT_MODE: YES
>>>> SIMULATOR_MODEL_IDENTIFIER: iPhone10,5
>>>> IOS_SIMULATOR_SYSLOG_SOCKET: /private/tmp/com.apple.CoreSimulator.SimDevice.6A2A94FC-74F0-47AC-847A-5F583E63430D/syslogsock
>>>> IPHONE_TVOUT_EXTENDED_PROPERTIES: /Users/clintjang/Library/Developer/CoreSimulator/Devices/6A2A94FC-74F0-47AC-847A-5F583E63430D/data/Library/Application Support/Simulator/extended_display.plist
>>>> TMPDIR: /Users/clintjang/Library/Developer/CoreSimulator/Devices/6A2A94FC-74F0-47AC-847A-5F583E63430D/data/Containers/Data/Application/132D6DCC-2A9F-4EC4-AD68-354B521C2207/tmp
>>>> CUPS_SERVER: /private/tmp/com.apple.launchd.Mi4ALE40dE/Listeners
>>>> __XPC_DYLD_LIBRARY_PATH: /Users/clintjang/Library/Developer/Xcode/DerivedData/JWSProcessInfoSample-evdzffmjhsdbdkdsqjhqkkphmnjc/Build/Products/Debug-iphonesimulator
>>>> SIMULATOR_HOST_HOME: /Users/clintjang
>>>> SIMULATOR_BOOT_TIME: 1521107015
>>>> SIMULATOR_PRODUCT_CLASS: D21
>>>> SIMULATOR_EXTENDED_DISPLAY_PROPERTIES: /Users/clintjang/Library/Developer/CoreSimulator/Devices/6A2A94FC-74F0-47AC-847A-5F583E63430D/data/Library/Application Support/Simulator/extended_display.plist
>>>> DYLD_FALLBACK_LIBRARY_PATH: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib
>>>> SIMULATOR_UDID: 6A2A94FC-74F0-47AC-847A-5F583E63430D
>>>> DYLD_FRAMEWORK_PATH: /Users/clintjang/Library/Developer/Xcode/DerivedData/JWSProcessInfoSample-evdzffmjhsdbdkdsqjhqkkphmnjc/Build/Products/Debug-iphonesimulator
>>>> __XCODE_BUILT_PRODUCTS_DIR_PATHS: /Users/clintjang/Library/Developer/Xcode/DerivedData/JWSProcessInfoSample-evdzffmjhsdbdkdsqjhqkkphmnjc/Build/Products/Debug-iphonesimulator
>>>> SIMULATOR_ROOT: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot
>>>> CFFIXED_USER_HOME: /Users/clintjang/Library/Developer/CoreSimulator/Devices/6A2A94FC-74F0-47AC-847A-5F583E63430D/data/Containers/Data/Application/132D6DCC-2A9F-4EC4-AD68-354B521C2207