iOS-Use CocoaPods import framework，but can't use it

my Xcode version is 7.3 and Mac Version is 10.11.4

I use pod setup and pod install get a new .xcworkspace file,and I open this file too.

but I still can't use #import " " or #import < > import some header files in Pods(I can see this header files in pod project) Xcode tell me not found this files.

thanks!

What is use frameworks in CocoaPods?

use_frameworks! tells cocoa pods to use dynamic libraries, and was very prevalent at one point due in particular to swift not supporting static libraries, meaning there was no choice - however you often don't need use_frameworks! anymore. As of Xcode 9 beta 4, and CocoaPods 1.5.

Clean the project. Try building your project without the import statement to start. Then try building again with the import statement.