Bridging in iOS and iOS

Bridging in iOS and iOS

Bridge Mode in iOS

C-> OC

• (_ Bridge tupe) expression: the ownership of the CoreFoundation framework object is handed over to the Foundation framework for use, but the objects in the Foundation framework cannot manage the object memory.
• (_ Bridge_transfer Objective-C type) expression: Give the object ownership of the CoreFoundation framework to Foundation for management. If the object in Foundation is destroyed, our previous object (CoreFoundation) will be destroyed together.

OC-> C

• (_ Bridge_retained CF type) expression