Xcode8.3.2 主要是包括 swift3.1 及 SDK for iOS 10.3，所以按理说不应该是 3.0 版本的，8.2.1 里面的 swift 版本是 3.0.2

升级 Xcode 到 8.3.2 自带 swift3.1

已解决，将 swift 从 3.0.2 升级至 3.1

请问问题解决了吗？我是 Android 自动化也遇到了相同问题

运行自动化提示代理请求失败，怎么解决呢？
[JSONWP Proxy] Proxying [GET /source] to [GET http://localhost:8100/session/268D2905-9CA3-4903-BB1A-640DA9C42A74/source] with no body
[MJSONWP] Encountered internal error running command: ProxyRequestError: Could not proxy command to remote server. Original error: Error: connect ECONNREFUSED 127.0.0.1:8100
at JWProxy.proxy$ (../../../lib/jsonwp-proxy/proxy.js:144:13)
at tryCatch (/usr/local/lib/node_modules/appium/node_modules/.5.8.24@babel-runtime/regenerator/runtime.js:67:40)
at GeneratorFunctionPrototype.invoke as _invoke
at GeneratorFunctionPrototype.prototype.(anonymous function) as throw

#1 楼 @chenzui 是的

build 过程中提示 “Could not find an Android SDK please make sure it is installed.” 可是我的电脑已经下载很多 Android SDK,android 开发打包都是正常的