我平时都喜欢真🐔测试，很少运行模拟器，今天启动app时报错：

dyld: Library not loaded: @rpath/libswiftAVFoundation.dylib

  Referenced from: /var/containers/Bundle/Application/0AF0D7B1-E55F-406E-93F8-66E7F5B6CFA1/XXX.app/XXX

  Reason: no suitable image found.  Did find:

/private/var/containers/Bundle/Application/0AF0D7B1-E55F-406E-93F8-66E7F5B6CFA1/XXX.app/Frameworks/libswiftAVFoundation.dylib: code signature invalid for '/private/var/containers/Bundle/Application/0AF0D7B1-E55F-406E-93F8-66E7F5B6CFA1/XXX.app/Frameworks/libswiftAVFoundation.dylib'


/private/var/containers/Bundle/Application/0AF0D7B1-E55F-406E-93F8-66E7F5B6CFA1/XXX.app/Frameworks/libswiftAVFoundation.dylib: code signature invalid for '/private/var/containers/Bundle/Application/0AF0D7B1-E55F-406E-93F8-66E7F5B6CFA1/XXX.app/Frameworks/libswiftAVFoundation.dylib'


/private/var/containers/Bundle/Application/0AF0D7B1-E55F-406E-93F8-66E7F5B6CFA1/XXX.app/Frameworks/libswiftAVFoundation.dylib: stat() failed with errno=1

/private/var/containers/Bundle/Application/0AF0D7B1-E55F-406E-93F8-66E7F5B6CFA1/XXX.app/Frameworks/libswiftAVFoundation.dylib: code signature invalid for '/private/var/containers/Bundle/Application/0AF0D7B1-E55F-406E-93F8-66E7F5B6CFA1/XXX.app/Frameworks/libswiftAVFoundation.dylib'


/private/var/containers/Bundle/Application/0AF0D7B1-E55F-406E-93F8-66E7F5B6CFA1/XXX.app/Frameworks/libswiftAVFoundation.dylib: stat() failed with errno=1

(lldb)

解决方法

• 找到Build Setings 在右上角搜索swift将 Always Embed Swift Standard Libraries属性改为YES，具体这个属性是什么意思，没有找到太多的解析，就按字面意思理解吧！

• 重启电脑->重启Xcode->(command+shift+k)也就是clean一下。

• ~/资源库/Caches/com.apple.dt.Xcode 删掉 com.apple.dt.Xcode文件

• ~/资源库/Developer/Xcode/DerivedData 删掉文件夹内的所有文件（我就在这成功解决了！！！）