最近升级Xcode8后运行提示Swift版本错误，具体错误如下：
“Use Legacy Swift Language Version” (SWIFT_VERSION) is required to be configured correctly for targets which use Swift. Use the [Edit > Convert > To Current Swift Syntax…] menu to choose a Swift version or use the Build Settings editor to configure the build setting directly.
错误提示图如下：
0.jpeg
具体解决办法点击：
1.点击pod工程
1.jpeg
3.jpeg
好了。
