Using Objective-C Classes in Swift
** If you have an existing class that you'd like to use, perform Step 2 and then skip to Step 5. (For some cases, I had to add an explicit #import <Foundation/Foundation.h to an older ObjC File) **
Step 1: Add Objective-C Implementation -- .m
Add a .m file to your class, and name it CustomObject.m
Step 2: Add Bridging Header
When adding your .m file, you'll likely be hit with a prompt that looks like this:
Click YES !
If you did not see the prompt, or accidentally deleted your bridging header, add a new .h file to your project and name it <#YourProjectName#>-Bridging-Header.h