title: How do I create an Objective-C bridging header?
body: <p>I'm following <a href="https://documentation.onesignal.com/docs/react-native-sdk-setup#section-add-app-groups-optional-but-recommended-" rel="nofollow noreferrer">this guide</a> on adding OneSignal to React Native, and there is one section where is says:</p>
  
  <p><code>Open NotificationService.m or NotificationService.swift and replace the whole file contents with the code below:</code></p>
  
  <p><code>&lt;provides code to add&gt;</code></p>
  
  <p><code>If you are using Swift, make sure to create a separate Objective-C Bridging Header for your OneSignalNotificationExtensionService and add the following import:</code></p>
  
  <p><code>#import "RCTOneSignalExtensionService.h"
  Then you need to tell your Xcode project settings what your bridging header is named, like this.</code></p>
  
  <p>I added the code they provided to <code>NotificationService.swift</code> because that's the only one of the two files that exists in my project. So I assume I'm "using swift" as they put it. The problem is that when they say to <code>create a separate Objective-C Bridging Header</code>, I don't know how to do that. All I've been able to find online is that when you import Objective-C code into your swift project, Xcode should automatically prompt you to create a bridging header. Xcode hasn't done that for me.</p>
  
  <p>Does anyone know how I can create an Objective-C bridging header?</p>