React Native开发中遇到的各种问题汇总

• 1.在iOS模拟器中无法调用Command+R进行刷新
  分析： 将模拟器的操作关闭了
  解决办法：将模拟器中国Hardware->Keyboard->Connect Hardware Keyboard打开即可

图片.png

• 2.新创建的ReactNative项目，在项目文件夹下执行react-native run-ios，但是出现以下报错(2017年7月4日)

** BUILD FAILED **


The following commands produced analyzer issues:

    Analyze /Users/xietao/Desktop/HanQiaoNote/项目源码/DouBanProject/node_modules/react-native/ReactCommon/yoga/yoga/Yoga.c
    Analyze /Users/xietao/Desktop/HanQiaoNote/项目源码/DouBanProject/node_modules/react-native/ReactCommon/yoga/yoga/YGNodeList.c
(2 commands with analyzer issues)

The following build commands failed:
    PhaseScriptExecution Install\ Third\ Party /Users/xietao/Desktop/HanQiaoNote/项目源码/DouBanProject/ios/build/Build/Intermediates/React.build/Debug-iphonesimulator/double-conversion.build/Script-190EE32F1E6A43DE00A8543A.sh
(1 failure)

Installing build/Build/Products/Debug-iphonesimulator/DouBanProject.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/DouBanProject.app/Info.plist
Print: Entry, ":CFBundleIdentifier", Does Not Exist

报错

原因：init命令默认会创建最新的版本，而目前最新的0.45版本需要下载boost库编译。此库体积庞大，在国内即便翻墙也很难下载成功，导致很多人无法正常运行iOS项目，推荐暂时使用0.44.3的版本。
解决办法： 创建项目暂时先使用react-native init MyApp --version 0.44.3，指定某个版本。
你可以使用--version参数（注意是两个杠）创建指定版本的项目。例如react-native init MyApp --version 0.44.3。注意版本号必须精确到两个小数点。