`react-native run-ios` returns Error: Could not find iPhone X simulator
React NativeIos SimulatorReact Native-IosReact Native Problem Overview
whenever I run react-native run-ios, I get
Could not find iPhone X simulator
Error: Could not find iPhone X simulator
at resolve (calendarPractice/node_modules/react-native/local-cli/runIOS/runIOS.js:149:13)
at new Promise (<anonymous>)
at runOnSimulator (calendarPractice/node_modules/react-native/local-cli/runIOS/runIOS.js:134:10)
at Object.runIOS [as func] (calendarPractice/node_modules/react-native/local-cli/runIOS/runIOS.js:106:12)
at Promise.resolve.then (calendarPractice/node_modules/react-native/local-cli/cliEntry.js:117:22)
however, when I run on Xcode, it works fine
{
"devicetypes" : [
{
"name" : "iPhone 4s",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 4s.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-4s"
},
{
"name" : "iPhone 5",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 5.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-5"
},
{
"name" : "iPhone 5s",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 5s.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-5s"
},
{
"name" : "iPhone 6",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 6.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-6"
},
{
"name" : "iPhone 6 Plus",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 6 Plus.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-6-Plus"
},
{
"name" : "iPhone 6s",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 6s.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-6s"
},
{
"name" : "iPhone 6s Plus",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 6s Plus.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-6s-Plus"
},
{
"name" : "iPhone 7",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 7.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-7"
},
{
"name" : "iPhone 7 Plus",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 7 Plus.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-7-Plus"
},
{
"name" : "iPhone 8",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 8.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-8"
},
{
"name" : "iPhone 8 Plus",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 8 Plus.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-8-Plus"
},
{
"name" : "iPhone SE",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone SE.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-SE"
},
{
"name" : "iPhone X",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone X.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-X"
},
{
"name" : "iPhone Xs",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone Xs.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-XS"
},
{
"name" : "iPhone Xs Max",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone Xs Max.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-XS-Max"
},
{
"name" : "iPhone Xʀ",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone Xʀ.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-XR"
},
{
"name" : "iPad 2",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad 2.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-2"
},
{
"name" : "iPad Retina",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad Retina.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-Retina"
},
{
"name" : "iPad Air",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad Air.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-Air"
},
{
"name" : "iPad Air 2",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad Air 2.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-Air-2"
},
{
"name" : "iPad (5th generation)",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad (5th generation).simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad--5th-generation-"
},
{
"name" : "iPad Pro (9.7-inch)",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad Pro (9.7-inch).simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-Pro--9-7-inch-"
},
{
"name" : "iPad Pro (12.9-inch)",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad Pro (12.9-inch).simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-Pro"
},
{
"name" : "iPad Pro (12.9-inch) (2nd generation)",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad Pro (12.9-inch) (2nd generation).simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-Pro--12-9-inch---2nd-generation-"
},
{
"name" : "iPad Pro (10.5-inch)",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad Pro (10.5-inch).simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-Pro--10-5-inch-"
},
{
"name" : "iPad (6th generation)",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad (6th generation).simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad--6th-generation-"
},
{
"name" : "iPad Pro (11-inch)",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad Pro (11-inch).simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-Pro--11-inch-"
},
{
"name" : "iPad Pro (12.9-inch) (3rd generation)",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad Pro (12.9-inch) (3rd generation).simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-Pro--12-9-inch---3rd-generation-"
},
{
"name" : "Apple TV",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/AppleTVOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple TV.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-TV-1080p"
},
{
"name" : "Apple TV 4K",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/AppleTVOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple TV 4K.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-TV-4K-4K"
},
{
"name" : "Apple TV 4K (at 1080p)",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/AppleTVOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple TV 4K (at 1080p).simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-TV-4K-1080p"
},
{
"name" : "Apple Watch - 38mm",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/WatchOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple Watch - 38mm.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-Watch-38mm"
},
{
"name" : "Apple Watch - 42mm",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/WatchOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple Watch - 42mm.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-Watch-42mm"
},
{
"name" : "Apple Watch Series 2 - 38mm",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/WatchOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple Watch Series 2 - 38mm.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-2-38mm"
},
{
"name" : "Apple Watch Series 2 - 42mm",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/WatchOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple Watch Series 2 - 42mm.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-2-42mm"
},
{
"name" : "Apple Watch Series 3 - 38mm",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/WatchOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple Watch Series 3 - 38mm.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-3-38mm"
},
{
"name" : "Apple Watch Series 3 - 42mm",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/WatchOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple Watch Series 3 - 42mm.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-3-42mm"
},
{
"name" : "Apple Watch Series 4 - 40mm",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/WatchOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple Watch Series 4 - 40mm.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-4-40mm"
},
{
"name" : "Apple Watch Series 4 - 44mm",
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/WatchOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple Watch Series 4 - 44mm.simdevicetype",
"identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-4-44mm"
}
],
"runtimes" : [
{
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/Runtimes\/iOS.simruntime",
"availabilityError" : "",
"buildversion" : "16B91",
"availability" : "(available)",
"isAvailable" : true,
"identifier" : "com.apple.CoreSimulator.SimRuntime.iOS-12-1",
"version" : "12.1",
"name" : "iOS 12.1"
},
{
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/AppleTVOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/Runtimes\/tvOS.simruntime",
"availabilityError" : "",
"buildversion" : "16J602",
"availability" : "(available)",
"isAvailable" : true,
"identifier" : "com.apple.CoreSimulator.SimRuntime.tvOS-12-1",
"version" : "12.1",
"name" : "tvOS 12.1"
},
{
"bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/WatchOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/Runtimes\/watchOS.simruntime",
"availabilityError" : "",
"buildversion" : "16R591",
"availability" : "(available)",
"isAvailable" : true,
"identifier" : "com.apple.CoreSimulator.SimRuntime.watchOS-5-1",
"version" : "5.1",
"name" : "watchOS 5.1"
}
],
"devices" : {
"com.apple.CoreSimulator.SimRuntime.watchOS-5-1" : [
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "Apple Watch Series 2 - 38mm",
"udid" : "01AFDEF7-63B6-465C-A02A-44EE4A07EABA",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "Apple Watch Series 2 - 42mm",
"udid" : "BE62C985-DEE2-46EC-8962-A582D537EEE0",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "Apple Watch Series 3 - 38mm",
"udid" : "078BF157-30FA-41D1-94FA-6B1686E03085",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "Apple Watch Series 3 - 42mm",
"udid" : "E4CE652E-0185-4C59-B965-BED5FCEE7C76",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "Apple Watch Series 4 - 40mm",
"udid" : "6621323A-A9DE-4BCB-AC97-54C8C33B0158",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "Apple Watch Series 4 - 44mm",
"udid" : "D89037A3-66A0-43C1-90BA-E7C76CA0D724",
"availabilityError" : ""
}
],
"com.apple.CoreSimulator.SimRuntime.tvOS-12-1" : [
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "Apple TV",
"udid" : "AFAA21B8-BD4A-45EA-B0FF-E9915FE9B926",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "Apple TV 4K",
"udid" : "EBB88F2E-CFFE-4981-A736-7A7C0B85643D",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "Apple TV 4K (at 1080p)",
"udid" : "F0B73E8A-986E-447E-B37A-2F46096DEFF6",
"availabilityError" : ""
}
],
"com.apple.CoreSimulator.SimRuntime.iOS-12-1" : [
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPhone 5s",
"udid" : "F870B7FA-6DDA-4336-89AD-68A402844188",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPhone 5s",
"udid" : "6627ADE5-F8C1-4AE5-BD6F-3AEDDC0B7B63",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPhone 6",
"udid" : "05574997-ACAD-40CA-A3D7-5624D53F00FA",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPhone 6 Plus",
"udid" : "93237078-CA6D-4F97-93F9-779809700018",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPhone 6s",
"udid" : "9B50FE18-4F49-4EA4-80F0-DF498A667D33",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPhone 6s Plus",
"udid" : "D4640B6D-97DC-4CA1-BE63-C5403159A3D4",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPhone 7",
"udid" : "6E9EEC00-3291-42B4-B04A-BA3487F9CD5F",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPhone 7 Plus",
"udid" : "6DA1C3CF-1D1F-4DEF-9B74-2C40D5FB5881",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPhone 8",
"udid" : "E19386B9-469A-450B-9CD2-B4FE8687DCF9",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPhone 8 Plus",
"udid" : "6D36DF76-8ED9-41A2-9E1A-0BA48B92C26E",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPhone SE",
"udid" : "EE4818DF-F817-4441-8A1C-BE1B99303E10",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPhone X",
"udid" : "85B78A8F-C32B-4493-BDD1-65ECA3F77C86",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPhone X",
"udid" : "CA12C337-4F66-4C6C-ACE5-7F7EACCBC39A",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPhone XS",
"udid" : "8BBCE315-2F4C-4132-8E53-28AF52401C8E",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPhone XS Max",
"udid" : "4E77C62F-AB1F-4EDE-839B-53F70CAFC79E",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPhone XR",
"udid" : "28D12ABE-3355-4862-960A-0FE5FFE41C7B",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPad Air",
"udid" : "94485C88-BCEB-456A-95DC-5F8C3DA8D181",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPad Air 2",
"udid" : "CF2C787D-A378-4AB9-B334-F7B24E94AF4D",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPad (5th generation)",
"udid" : "DFE602A5-EC68-4585-8AB0-C045A9843D29",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPad Pro (9.7-inch)",
"udid" : "5A3F3EAC-F788-49F1-A753-5D34A9990F0B",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPad Pro (12.9-inch)",
"udid" : "EF6EBE34-0A85-4FF0-8A45-7BA418A0CC0C",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPad Pro (12.9-inch) (2nd generation)",
"udid" : "FBA940F8-FD85-4D5E-A570-EB4F3A56E1F9",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPad Pro (10.5-inch)",
"udid" : "8AE4AAED-ECE0-4984-9679-8D3022064692",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPad (6th generation)",
"udid" : "1121363D-EF49-4AC0-9E46-5C30318A24A2",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPad Pro (11-inch)",
"udid" : "038FECC0-8711-46E3-B601-8F88F2F4AD7D",
"availabilityError" : ""
},
{
"availability" : "(available)",
"state" : "Shutdown",
"isAvailable" : true,
"name" : "iPad Pro (12.9-inch) (3rd generation)",
"udid" : "12DC911F-2F45-4767-BC1A-6F1D0C8D9F3D",
"availabilityError" : ""
}
]
},
"pairs" : {
"C9B69F4A-6A9D-44F3-A6BC-56BFA2F8B83F" : {
"watch" : {
"name" : "Apple Watch Series 4 - 44mm",
"udid" : "D89037A3-66A0-43C1-90BA-E7C76CA0D724",
"state" : "Shutdown"
},
"phone" : {
"name" : "iPhone XS Max",
"udid" : "4E77C62F-AB1F-4EDE-839B-53F70CAFC79E",
"state" : "Shutdown"
},
"state" : "(active, disconnected)"
},
"5327B65F-29E7-42D0-9861-FF31428F3218" : {
"watch" : {
"name" : "Apple Watch Series 4 - 40mm",
"udid" : "6621323A-A9DE-4BCB-AC97-54C8C33B0158",
"state" : "Shutdown"
},
"phone" : {
"name" : "iPhone XS",
"udid" : "8BBCE315-2F4C-4132-8E53-28AF52401C8E",
"state" : "Shutdown"
},
"state" : "(active, disconnected)"
}
}
React Native Solutions
Solution 1 - React Native
To fix this error, simply reinstall project & node modules using npm
npm install
Then it will show a list of warnings, and to fix them use the following command:
npm audit fix
This should fix everything, and allow you to run iOS emulator
react-native run-ios
Solution 2 - React Native
Edited:
I copied your devices section of your output JSON and embedded to my own /node_modules/react-native/local-cli/runIOS/runIOS.js
function runOnSimulator(xcodeProject, args, scheme) {
return new Promise(resolve => {
try {
var simulators = {devices section of your json}; //Here
} catch (e) {
console.log("e", e);
throw new Error('Could not parse the simulator list output');
}
const selectedSimulator = findMatchingSimulator(simulators, args.simulator);
console.log("selected", selectedSimulator);
if (!selectedSimulator) {
throw new Error(`Could not find ${args.simulator} simulator`);
}
...
And finally, it gave the same error as yours. So I figured out that parsing version of devices different. In your devices, version is;
"com.apple.CoreSimulator.SimRuntime.tvOS-12-1" //for tvOS
"com.apple.CoreSimulator.SimRuntime.iOS-12-1" // for iOS
but in react-native checks this version values like this(/node_modules/react-native/local-cli/runIOS/findMatchingSimulator.js);
// Making sure the version of the simulator is an iOS or tvOS (Removes Apple Watch, etc)
if (!version.startsWith('iOS') && !version.startsWith('tvOS')) {
continue;
}
So react-native can not recognize.
If we change this code with this;
// Making sure the version of the simulator is an iOS or tvOS (Removes Apple Watch, etc)
if (!version.startsWith('com.apple.CoreSimulator.SimRuntime.iOS') && !version.startsWith('com.apple.CoreSimulator.SimRuntime.tvOS')) {
continue;
}
the problem was solved. I checked that with your JSON data in my computer and it worked.
Solution 3 - React Native
PROBLEM
If you try this with the latest Xcode (11), there is no iPhone X!
Run Simulator by itself, in the top menu, look under Hardware, Device, iOS 13.0. You will see there is:
- iPhone 8
- iPhone 8 Plus
- iPhone XS
- iPhone XS Max
- iPhone XR
- ... and some iPads
When you execute run-ios, react-native is designed to match a requested device.
The internally hard coded default is iPhone X.
The function that tries to match the requested device is in:
/node_modules/@react-native-community/cli-platform-ios/build/commands/runIOS/findMatchingSimulator.js
This function is designed so you can give it a device, and an optional version number.
If the given device and version cannot be found, it will return a match using the first device in the list by default.
But... in reality, the first device is a watch, and any watch is excluded from matching, so this function will return null.
SOLUTION 1 - Use an existing Xcode device
Run Simulator first by itself, as described above, and make a note of which iPhone or iPad you want.
Then pass this name as an optional argument the the run-ios command line command as follows:
react-native run-ios --simulator="iPhone 8"
SOLUTION 2 - Add New Xcode iOS Device
According to Xcode 11 Release Notes:
"Xcode no longer creates every available iOS simulator device by default. Instead a set of the most commonly used devices are created. To create other devices — or multiple instances of a device — open the Devices window, select Simulators, click the + button, enter a name, and select the relevant device type and OS version. In Terminal, execute the xcrun simctl create
In Xcode, you need to add a new device called "iPhone X".
Also I answered here: React Native Issue #2328
Solution 4 - React Native
Temporary fix:
Step 1: Open the file /node_modules/react-native/local-cli/runIOS/findMatchingSimulator.js
Step 2: Change a line of code, from this:
if (!version.startsWith('iOS') && !version.startsWith('tvOS')) {
continue;
}
to this:
if (!version.startsWith('com.apple.CoreSimulator.SimRuntime.iOS') && !version.startsWith('com.apple.CoreSimulator.SimRuntime.tvOS')) {
continue;
}
Step 3: Run react-native run-ios (you might need to run it twice, and don't forget to kill the Metro Bundler [the console that's running in the background] if it's running from your previous unsuccessful build!)
The problem was that after an update to Xcode - the simulator namespaces were added to the devices' versions list. The React Native build wasn't expecting these namespaces - hence the build break.
Solution 5 - React Native
after update to Xcode 11 xcrun returns true or false and not YES or NO as before.
goto /node_modules/react-native/local-cli/runIOS/findMatchingSimulator.js and in
find
if (
simulator.availability !== '(available)' &&
simulator.isAvailable !== 'YES'
) {
continue;
}
and change it to
if (
simulator.availability !== '(available)' &&
simulator.isAvailable !== true
) {
continue;
}
Solution 6 - React Native
There is no iPhone X simulator on your machine, most probably because you updated Xcode. You can simply pass the name of the available simulator like below:
react-native run-ios --simulator="iPhone 11"
For checking available simulators you can open Xcode and check on device list as shown below:
Solution 7 - React Native
Open the file /node_modules/react-native/local-cli/runIOS/findMatchingSimulator.js
!version.startsWith('iOS') - > !version.includes('iOS')
Solution 8 - React Native
I also did not have iPhone X installed as a simulator on Xcode. All I had to do was add the iPhone X as a new simulator in Xcode and all is well.
In Xcode: Go to Window then Devices and Simulators. Click the simulators tab. Click the + button on the bottom left corner and add the iPhone X.
I hope this fix is as easy for you as it was for me.
Solution 9 - React Native
After I updated Xcode to version 11, I encountered the same problem.
A solution can be to add the iPhone X simulator into your list.
-
Choose simulator -> Hardware -> Manage Devices (you will see a popup)
-
Choose "Simulators" -> (left bottom corner) +(the plus icon, next to "Filter") then add a new simulator,
-
Simulator Name: iPhone X Device Type: Choose iPhone X.
It worked for me
Solution 10 - React Native
For Xcode 11.2 and iOS 13.2 here are changes i've done to run the app in simulator
in findMatchingSimulator.js
line 43:
if (!version.startsWith('iOS') && !version.startsWith('tvOS')) {
to
if (!version.includes('iOS') && !version.includes('tvOS')) {
line
line 52
if (
simulator.availability !== '(available)' &&
simulator.isAvailable !== 'YES'
) {
continue;
}
to
if (
simulator.isAvailable != true
) {
continue;
}
P.S.
First day on React project ad already lowing it! (no)
Solution 11 - React Native
in my case i run the script: sed -i '' 's/startsWith/includes/g' node_modules/react-native/local-cli/runIOS/findMatchingSimulator.js and it worked. also suitable for people who can't update react-native
Solution 12 - React Native
My problem was that iPhone X simulator was not installed
You can check what simulators are installed with
xcrun simctl list devices | grep iPhone | grep -v unavailable | cut -d'(' -f1
Then run
react-native run-ios --simulator="iPhone Xs"
Solution 13 - React Native
I encountered the same error when i upgraded my Xcode 10 to Xcode 11, But specifying the simulator version happens to be a quick fix for me.
First list all available ios emulator with
xcrun simctl list devices | grep iPhone | grep -v unavailable | cut -d'(' -f1
Result
Then select one to run react-native with, e.g
react-native run-ios --simulator='iPhone 11 Pro Max'
Solution 14 - React Native
if could not found simulator still persists after replacing following lines of code in runSimulator.js.
> Path for runSimulator.js -> > /node_modules/react-native/local-cli/runIOS/findMatchingSimulator.js
if (!version.startsWith('iOS') && !version.startsWith('tvOS')) { continue; }
with this one
if ( !version.startsWith('com.apple.CoreSimulator.SimRuntime.iOS') && !version.startsWith('com.apple.CoreSimulator.SimRuntime.tvOS') ) { continue; }
comment following lines after replacing
if ( simulator.availability !== '(available)' && simulator.isAvailable !== 'YES' ) { continue; }
It will launch iPhone simulator without any issue.
and 2nd approach after updating to XCode 11
Xcode 11 xcrun returns true or false and not YES or NO for isAvailable property as before. You can check that using the following command
xcrun simctl list devices --json
> above command will print all available devices like following
"com.apple.CoreSimulator.SimRuntime.iOS-12-2" : [
{
"state" : "Booted",
"isAvailable" : true,
"name" : "iPhone X",
"udid" : "E53748D1-628B-4A99-A419-4D7AE7CE4745"
}
]
> Replace YES with true in following code
if ( simulator.availability !== '(available)' && simulator.isAvailable !== 'YES' ) { continue; }
> like this
if ( simulator.availability !== '(available)' && simulator.isAvailable !== true ) { continue; }
Solution 15 - React Native
easy fix...
Xcode -> preferences -> components install ios 12.2 sumulator
Solution 16 - React Native
change
/node_modules/@react-native-community/cli-platform-ios/build/commands/runIOS/index.js
file
options: [{
name: '--simulator [string]',
description: 'Explicitly set simulator to use. Optionally include iOS version between' + 'parenthesis at the end to match an exact version: "iPhone 6 (10.0)"',
default: 'iPhone X'
}
to
options: [{
name: '--simulator [string]',
description: 'Explicitly set simulator to use. Optionally include iOS version between' + 'parenthesis at the end to match an exact version: "iPhone 6 (10.0)"',
default: 'iPhone 8'
}
Solution 17 - React Native
I encountered this issue after trying to upgrade React Native from 0.59.8 to 0.59.9.
It turns out (based the above answers), we need to update @react-native-community/cli module:
- Remove it from lockfile (
yarn.lockorpackage-lock.json) - Run
yarnornpm installto install it again.
reference: https://github.com/react-native-community/rn-diff-purge/issues/21#issuecomment-507645945
Solution 18 - React Native
With react-native-cli 2.0.1, you may want to just rename your simulator. By default Xcode will name some devices in the format <DeviceName> (<DeviceSize>). However this version of the CLI interprets anything in parentheses as the iOS version.
When trying to run a simulator named iPad Pro (10.5-inch), I was able to get it to run by simply renaming the simulator to iPad Pro [10.5-inch].
You can rename simulators by using the Simulator app's Hardware->Device->Manage Devices... menu, and right-clicking one of your simulators (in Xcode 10.2.1)
Solution 19 - React Native
I faced the issue when I updated Xcode. All the simulators were not available/uninstalled. I am installing them again.
Solution 20 - React Native
In my case, i have tried others above solution but nothing worked.
Then i try upgrading react-native from 0.59.5 to 0.59.10 then it's solved
Solution 21 - React Native
For me, I had to update React Native to 0.60 by running npx react-native-git-upgrade.
Solution 22 - React Native
I had the same problem
> npm audit fix
this worked for me
Solution 23 - React Native
What fixed it for me was not having Xcode command lines tools set (xcrun simctl was failing.) If you just re-installed Xcode, you might have this issue.
See this post on how to set the command line tools. After, try running react-native run-ios --simulator="iPhone 11" (or whatever your simulator name is).
Solution 24 - React Native
I'm having the same issue each time I update Xcode.
I run this command:
sudo killall -9 com.apple.CoreSimulator.CoreSimulatorService
Then I run react-native run-ios again.
Solution 25 - React Native
Just reboot your computer and run command again.