How to create the bridge header file in swift

Flow :

1. Add a new file to Xcode (File > New > File), then select “Source” and click “Header File“.
2. Name your file “YourProjectName-Bridging-Header.h”.  
3. Create the file.
4. Navigate to your project build settings and find the “Swift Compiler – Code Generation” section.  You may find it faster to type in “Swift Compiler” into the search box to narrow down the results.  Note: If you don’t have a “Swift Compiler – Code Generation” section, this means you probably don’t have any Swift classes added to your project yet.  Add a Swift file, then try again.
5. Next to “Objective-C Bridging Header” you will need to add the name/path of your header file.  If your file resides in your project’s root folder simply put the name of the header file there.  
6. Open up your newly created bridging header and import your Objective-C classes using #importstatements.  Any class listed in this file will be able to be accessed from your swift classes.