Using Cocoapod to import swift third-party libraries error

This error occurs when you use Cocoapod to import a swift third-party:

[!] Pods written in Swift can is only integrated as frameworks; Add ' use_frameworks! ' to your podfile or target to opt-in using it. The Swift Pod being used is: three-party library name

At first I used the OC configuration method

Results error, and later through the translation, can only be integrated framework, need to add "use_frameworks!". After the change, the following:

Platform:ios, ' 8.0 ' target "podtest" Dopod ' Mjrefresh ' use_frameworks! End

Using Cocoapod to import swift third-party libraries error