Podfile.lock missing when initial react-native run-ios - ios

Question

I am setting up IOS dev for React Native (0.61) app which has the working android version. What I did was to copy src of components and package.json file after react native environment is setup by following online post (installed xcode command line tool 10.2). But launching run-ios failed:
$ react-native run-ios
error Could not find "Podfile.lock" at /Users/mine/Documents/code/js/emps_fe6/ios/Podfile.lock. Did you run "pod install" in iOS directory?
error Could not find the following native modules: RNCAsyncStorage, RNDeviceInfo, RNGestureHandler, RNKeychain, BVLinearGradient, RNLocalize, RNReanimated, RNVectorIcons, react-native-video. Did you forget to run "pod install" ?
info Found Xcode project "emps_fe6.xcodeproj"
xcrun: error: unable to find utility "simctl", not a developer tool or in PATH
error Could not parse the simulator list output. Run CLI with --verbose flag for more details.
Error: Command failed: xcrun simctl list --json devices
xcrun: error: unable to find utility "simctl", not a developer tool or in PATH
at checkExecSyncError (child_process.js:629:11)
at Object.execFileSync (child_process.js:647:13)
at runOnSimulator (/Usersamine/Documents/code/js/emps_fe6/node_modules/#react-native-community/cli-platform-ios/build/commands/runIOS/index.js:130:54)
at Object.runIOS [as func] (/Users/mine/Documents/code/js/emps_fe6/node_modules/#react-native-community/cli-platform-ios/build/commands/runIOS/index.js:100:12)
at Command.handleAction (/Users/mine/Documents/code/js/emps_fe6/node_modules/#react-native-community/cli/build/index.js:164:23)
at Command.listener (/Users/mine/Documents/code/js/emps_fe6/node_modules/commander/index.js:315:8)
at Command.emit (events.js:198:13)
at Command.parseArgs (/Users/amine/Documents/code/js/emps_fe6/node_modules/commander/index.js:651:12)
at Command.parse (/Users/mine/Documents/code/js/emps_fe6/node_modules/commander/index.js:474:21)
at setupAndRun (/Users/mine/Documents/code/js/emps_fe6/node_modules/#react-native-community/cli/build/index.js:237:24)
Here is the output of react native info:
$ react-native info
info Fetching system and libraries information...
System:
OS: macOS High Sierra 10.13.6
CPU: (8) x64 Intel(R) Core(TM) i7-2675QM CPU # 2.20GHz
Memory: 194.93 MB / 8.00 GB
Shell: 3.2.57 - /bin/bash
Binaries:
Node: 10.17.0 - /usr/local/bin/node
Yarn: 1.19.1 - /usr/local/bin/yarn
npm: 6.11.3 - /usr/local/bin/npm
IDEs:
Xcode: /undefined - /usr/bin/xcodebuild
npmPackages:
react: 16.11.0 => 16.11.0
react-native: 0.61.2 => 0.61.2
npmGlobalPackages:
react-native-cli: 2.0.1
Here is the package.json:
"dependencies": {
"#react-native-community/async-storage": "^1.6.2",
"moment": "^2.24.0",
"react": "16.11.0",
"react-native": "0.61.2",
"react-native-cli": "^2.0.1",
"react-native-confirmation-code-field": "^4.1.0",
"react-native-device-info": "^4.0.1",
"react-native-elements": "^1.2.6",
"react-native-gesture-handler": "^1.4.1",
"react-native-gifted-chat": "^0.11.3",
"react-native-keychain": "^4.0.1",
"react-native-linear-gradient": "^2.5.6",
"react-native-localize": "^1.3.1",
"react-native-modal": "^11.4.0",
"react-native-modal-datetime-picker": "^7.6.0",
"react-native-reanimated": "^1.3.0",
"react-native-segmented-control-tab": "^3.4.1",
"react-native-vector-icons": "^6.6.0",
"react-native-video": "^5.0.2",
"react-navigation": "^4.0.10",
"react-navigation-stack": "^1.10.2",
"react-navigation-tabs": "^2.5.6",
"simctl": "^2.0.0",
"socket.io-client": "2.1.1",
"xcode": "^2.0.0"
},
In the error message, there mentioned quite a few modules which are missing. But those modules have been installed as it shows in the package.json. I am not sure about what the error message means. Also I installed the simctl but scrum simctl still can not find it. I am using VS Code as IDE.
UPDATE:
created an empty Podfile.lock under /ios, the error becomes when run-ios:
error Cannot read property 'SPEC CHECKSUMS' of undefined. Run CLI with --verbose flag for more details.
TypeError: Cannot read property 'SPEC CHECKSUMS' of undefined
at getDependenciesFromPodfileLock (/Users/mine/Documents/code/js/emps_fe6/node_modules/#react-native-community/cli-platform-ios/build/link-pods/getDependenciesFromPodfileLock.js:63:58)
at warnAboutPodInstall (/Users/mine/Documents/code/js/emps_fe6/node_modules/#react-native-community/cli-platform-ios/build/link/warnAboutPodInstall.js:43:67)
at Object.runIOS [as func] (/Users/mine/Documents/code/js/emps_fe6/node_modules/#react-native-community/cli-platform-ios/build/commands/runIOS/index.js:80:36)
at Command.handleAction (/Users/mine/Documents/code/js/emps_fe6/node_modules/#react-native-community/cli/build/index.js:164:23)
at Command.listener (/Users/mine/Documents/code/js/emps_fe6/node_modules/commander/index.js:315:8)
at Command.emit (events.js:198:13)
at Command.parseArgs (/Users/mine/Documents/code/js/emps_fe6/node_modules/commander/index.js:651:12)
at Command.parse (/Users/mine/Documents/code/js/emps_fe6/node_modules/commander/index.js:474:21)
at setupAndRun (/Users/mine/Documents/code/js/emps_fe6/node_modules/#react-native-community/cli/build/index.js:237:24)
at Object.run (/Users/mine/Documents/code/js/emps_fe6/node_modules/#react-native-community/cli/build/index.js:184:11)

Answer 1

First install the cocoapods
sudo gem install cocoapods
Then run the below command on root folder
cd ios && pod install && cd ../ && react-native run-ios

Answer 2

Step 1:
sudo gem install cocoapods
Step 2:
cd ios && pod install && cd ../ && react-native run-ios
If you still get error while installing pods continue the below steps.
Step 3: Put this in console ->
xcrun -k --sdk iphoneos --show-sdk-path
if the answer is
xcrun:_ error: SDK "iphoneos" cannot be located
xcrun: error: SDK "iphoneos" cannot be located
xcrun: error: unable to lookup item 'Path' in SDK 'iphoneos'
then put this:
sudo xcode-select --switch /Applications/Xcode.app
Then install pod again

Answer 3

I had the same issue and I solve the problem using bellow approach.
Navigate to iOS folder and then run bellow command:
pod update
pod update command will update all dependency and generate a "Podfile.lock" file.

Answer 4

I had a similar issue and resolved it by jumping into the ios folder and running:
pod update
Doing this directly in the ios folder resulted in the generation of Podsfile.lock
Changing out of ios into the main directory I was able to then launch the app on an IOS simulator using:
npx react-native run-ios

Answer 5

I have tried many solutions. But finally tried something logical. I don't know why i didn't tried first :)
pod install doesn't work.It changes nothing. The problem is "Podfile" is there but not "Podfile.lock". Thats the problem. When we try install again, it is doing nothing because Podfile is there.
Solution is removing "Podfile" then pod install again. Then you will see both files "Podfile" and "Podfile.lock". After many hours of struggling, this was the solution for me and i have tried many thing :) Good luck to you all.

Answer 6

For anybody with Mac M1 that nothing worked and still having the problem.
They actually say at the docs you need to run those commands
sudo arch -x86_64 gem install ffi
arch -x86_64 pod install
when it ends will tell
[!] Please close any current Xcode sessions and use `MyApp.xcworkspace` for this project from now on.
Pod installation complete! There are 55 dependencies from the Podfile and 46 total pods installed.
if you go and now run pod install you will notice the deference

Answer 7

This solution would work when you are trying to START a project, I don't know if it would help while you are in one and come across this issue.
Here is what I did:
install node.js (unless you already have it downloaded)
TO CHECK: go into terminal and type: node -v
install homeBrew (unless you already have it downloaded)
To download: go into terminal and type: /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
remember to read what it says on the terminal to fully download it (there should be like two other commands you put in)
install watchman, on terminal type: brew install watchman
on terminal uninstall all your cocoapod stuff. Check how to with this link: https://superuser.com/questions/686317/how-to-fully-uninstall-the-cocoapods-from-the-mac-machine
open up VScode
type npx react-native init TestProject
choose the method to install Cocoapods through Homebrew
This worked for me.