现有iOS项目集成react-native

1. 创建一个指定版本的RN项目

react-native init RN63 --version 0.63.4

如果：现有的RN项目引用了很多三方库，执行完上面操作后有两种方式来

将现有RN项目的package.json里的依赖copy到 RN63的package.json 然后执行 npm install

2.修改pod引用方式

将 pod xxx, :path => 修改为 pod xxx, :podspec =>

• 1.修改node_modules/@react-native-community/cli-platform-ios/native_module文件里的

  pod spec.name, :path => relative_path.to_path
  to:
  pod spec.name, :podspec => relative_path.to_path

• 2.修改node_modules/react-native/scripts/react_native_pods文件里的

  pod 'FBLazyVector', :path => "#{prefix}/Libraries/FBLazyVector"
  to:
  pod 'FBLazyVector', :podspec => "#{prefix}/Libraries/FBLazyVector"

  pod 'FBReactNativeSpec', :path => "#{prefix}/Libraries/FBReactNativeSpec"
  to:
  pod 'FBReactNativeSpec', :podspec => "#{prefix}/Libraries/FBReactNativeSpec"
  
  ...
  ...
  

react_native_pods

3.!!!修改native_module中的所有用到的podspec文件

以   pod 'FBLazyVector', :podspec => "#{prefix}/Libraries/FBLazyVector" 为例
在/Libraries/FBLazyVector目录下找到FBLazyVector.podspec
 s.source_files           = "**/*.{c,h,m,mm,cpp}"
 to:
 s.source_files           = "Libraries/FBLazyVector/**/*.{c,h,m,mm,cpp}"

TIPS:
{prefix}/Libraries/FBLazyVector  看成 {prefix}/XXX
则对应修改
s.source_files           = "XXX/**/*.{c,h,m,mm,cpp}"

注意

!!!!!
修改 React-RCTBlob 时，
  s.source_files           = "*.{m,mm}"
  to:
  s.source_files           = "Libraries/Blob/*.{h,m,mm}"


注销掉修改过的podspec文件里的  s.preserve_paths
 # s.preserve_paths         = "package.json", "LICENSE", "LICENSE-docs"