React-native 入坑第一天 环境配置

今天看了一天环境配置，我是在Mac下配置的环境   

首先安装HomeBrew  简称brew, Mac系统的包管理器, 用于安装NodeJS和一些其他必需的工具软件。

打开终端 运行命令

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

安装node.js 

brew install node

安装React Native的命令行工具（react-native-cli）

npm install -g react-native-cli

将npm仓库替换为国内镜像：

npm config set registry https://registry.npm.taobao.org --global

npm config set disturl https://npm.taobao.org/dist --global

再来安装一些工具  

安装Watchman 

brew install watchman

安装 Flow 

brew install flow

这样环境基本上配置好了    

如果你想配置安卓环境  需要执行 

brew cask install android-sdk

网上一般都是  brew install android-sdk 

HomeBrew no longer have android-sdk installation support

You may install the android-sdk via brew cask install android-sdk and setup the SDK 23 instead

可能我学习的晚，版本都更新的和之前的不一样

然后创建项目  这里面有一个坑  

react-native init FirstProject

进入工程目录  然后运行

react-native run-ios

会出现

** BUILD FAILED **

The following build commands failed:

PhaseScriptExecution Install\ Third\ Party /Users/duanshiyi/Documents/学习视频/React-Native\ 练习/FirstProject/ios/build/Build/Intermediates/React.build/Debug-iphonesimulator/double-conversion.build/Script-190EE32F1E6A43DE00A8543A.sh

(1 failure)

Installing build/Build/Products/Debug-iphonesimulator/FirstProject.app

An error was encountered processing the command (domain=NSPOSIXErrorDomain, code=2):

Failed to install the requested application

An application bundle was not found at the provided path.

Provide a valid path to the desired application bundle.

Print: Entry, ":CFBundleIdentifier", Does Not Exist

Command failed: /usr/libexec/PlistBuddy -c Print:CFBundleIdentifier build/Build/Products/Debug-iphonesimulator/FirstProject.app/Info.plist

Print: Entry, ":CFBundleIdentifier", Does Not Exist

这个可能是版本的问题  所以  建议使用0.42版本来创建

react-native init --version="0.42.0" FirstProject

这样不会编译报错     

这是我刚接触React native 遇到的问题，如果有什么解决的不恰当的希望各位大神指出