react-native ios Podfile issue with “use_native_mo

问题:

In my react-native project (react-native@0.60) in the ios/ dir I run pod install and get this error:

[!] Invalid `Podfile` file: no implicit conversion of nil into String.

 #  from /Users/coryrobinson/projects/hhs2/ios/Podfile:37
 #  -------------------------------------------
 #  
 >    use_native_modules!
 #  end
 #  -------------------------------------------

I haven't added or changed anything in this Podfile - it's all react-native generated. (I'm not experienced in iOS dev so this might be a simple fix, I just don't know what to look for :-|) Thanks for any help!

Here is my Podfile

platform :ios, '9.0'
require_relative '../node_modules/@react-native-community/cli-platform-ios/native_modules'

target 'hhs2' do
  # Pods for hhs2
  pod 'React', :path => '../node_modules/react-native/'
  pod 'React-Core', :path => '../node_modules/react-native/React'
  pod 'React-DevSupport', :path => '../node_modules/react-native/React'
  pod 'React-fishhook', :path => '../node_modules/react-native/Libraries/fishhook'
  pod 'React-RCTActionSheet', :path => '../node_modules/react-native/Libraries/ActionSheetIOS'
  pod 'React-RCTAnimation', :path => '../node_modules/react-native/Libraries/NativeAnimation'
  pod 'React-RCTBlob', :path => '../node_modules/react-native/Libraries/Blob'
  pod 'React-RCTImage', :path => '../node_modules/react-native/Libraries/Image'
  pod 'React-RCTLinking', :path => '../node_modules/react-native/Libraries/LinkingIOS'
  pod 'React-RCTNetwork', :path => '../node_modules/react-native/Libraries/Network'
  pod 'React-RCTSettings', :path => '../node_modules/react-native/Libraries/Settings'
  pod 'React-RCTText', :path => '../node_modules/react-native/Libraries/Text'
  pod 'React-RCTVibration', :path => '../node_modules/react-native/Libraries/Vibration'
  pod 'React-RCTWebSocket', :path => '../node_modules/react-native/Libraries/WebSocket'
  pod 'RNFS', :path => '../node_modules/react-native-fs'

  pod 'React-cxxreact', :path => '../node_modules/react-native/ReactCommon/cxxreact'
  pod 'React-jsi', :path => '../node_modules/react-native/ReactCommon/jsi'
  pod 'React-jsiexecutor', :path => '../node_modules/react-native/ReactCommon/jsiexecutor'
  pod 'React-jsinspector', :path => '../node_modules/react-native/ReactCommon/jsinspector'
  pod 'yoga', :path => '../node_modules/react-native/ReactCommon/yoga'

  pod 'DoubleConversion', :podspec => '../node_modules/react-native/third-party-podspecs/DoubleConversion.podspec'
  pod 'glog', :podspec => '../node_modules/react-native/third-party-podspecs/glog.podspec'
  pod 'Folly', :podspec => '../node_modules/react-native/third-party-podspecs/Folly.podspec'

  target 'hhs2Tests' do
    inherit! :search_paths
    # Pods for testing
  end

  use_native_modules!
end

target 'hhs2-tvOS' do
  # Pods for hhs2-tvOS

  target 'hhs2-tvOSTests' do
    inherit! :search_paths
    # Pods for testing
  end

end

回答1:

Here is the correct answer:

1 - Your POD File should contain this line on top

require_relative '../node_modules/@react-native-community/cli-platform-ios/native_modules'

2 - Make sure your package.json and node_module folders has this module installed

cli-platform-ios/native_modules

3 - If you didn't find after you run yarn install - means you have old cache node_modules in your machine and you need to clean it before reinstalling the package again.

4 - Clean cache yarn cache clean

5 - Make sure you have this file react-native.config.js and its configuration is VALID - and it doesn't have non-existing NPM packages - this step is LAST AND MOSTLY THE CAUSE of the error

Example of my react-native.config.js

module.exports = {
  project: {
    ios: {},
    android: {},
  },
  assets: ['./assets/fonts/']
  dependencies: {}, // make sure this deps are all valid installed packages or empty if you don't need it
};

6 - Install node packages yarn install and your pods should work now! pod install --repo-update

HAPPY coding!

回答2:

i just dropped the whole node_modules and RN cache folder and did a clean reinstall, this fixed the "use_native_modules" problem so far....but after that i had to hassle a lot with other libs which where just not RN0.60 ready ;)

回答3:

If you are using

pod install --project-directory=ios

you might need to tweak the Podfile by replacing

use_native_modules!

to

use_native_modules!(".")

Maybe this behavior will be improved in the future, I opened an issue about it https://github.com/react-native-community/cli/issues/657

回答4:

For me, I deleted the node_modules and installed again by using npm install . After that, I navigated to /ios folder and ran pod install it worked.

回答5:

this is because the outdate yarn version on your device, if you on macOS you can upgrade/install the yarn with follow this link: here it is

be aware to delete node-module and yarn.lock file, install all packages again, navigate to ios folder and run pod install.

回答6:

Verify if you have @react-native-community/cli-platform-ios in your package.json,

if you dont run:

npm install @react-native-community/cli-platform-ios

then

cd ios && pod install

回答7:

After removing several react-native npm packages (ie: react-native-bluetooth-serial, react-native-sound, and more...) pod install works.

It appears the pod install error is related to older react-native packages that don't support cocoa pods? I'm not sure the details but removing those packages from node_modules & package.json solved my issue.

回答8:

I got this error after I tried to react-native run-ios an Expo app. The error I got indicated that something was wrong with the Pods, so I ran cd ios && pod install, which is how I got a similar error as the OP.

In that case, you obviously need to expo start instead of react-native run-ios.

回答9:

One of the reasons may be outdated version of Ruby. Use following command to upgrade it.

rvm install 2.6.1
rvm use 2.6.1 --default

Or you can follow below article, which has a detailed explanation of upgrading ruby and associated gems.

https://help.learn.co/en/articles/2789231-how-to-upgrade-from-ruby-2-3-to-2-6

回答10:

The issue is that:

use_native_modules!

is unsupported by earlier versions of CocoaPods. For example, our install was the app downloaded from the CocaoPods website. That version is 1.5.2.

Run:

pod --version

to check which version. If need be, uninstall and then re-install but in Terminal by running:

sudo gem install cocoapods

At least as of late October 2019, the current gem version available is 1.8.4. Once successfully installed, re-attempt the pod install and hopefully all is well.

回答11:

Go to this repository : ProjectName -> ios -> Podfile In Podfile, delete use_native_modules! Execute again pod install And Enjoy your use

回答12:

Getting rid of the line use_native_modules! works as well. Maybe this has been deprecated or syntax has changed? Curious to hear from others.

Update: Seems to be an issue with react-native 0.60.0. Until a release fixes this bug, 0.59.10 can be explicitly installed, and you only need to add CocoaPods as necessary.

react-native init APP_NAME --version react-native@0.59.10