Adding custom native code to a project

If the native API you need is not exposed through @nativescript/core, third party plugins or @nativescript/* plugins), you can add it to your project and access it right away in TypeScript.

1. Add native code to App_Resources. For example, see

   • Adding Java/Kotlin code to an application
   • Adding ObjectiveC/Swift Code to an application

2. Generate types for the added APIs For iOS types run:

   cli

   ns typings ios

   For Android run:

   cli

   ns typings android --jar <path to a jar>
   # or
   ns typings android --aar <path to an aar>

3. Reference the generated types in references.d.ts

4. You can now code against the platform native APIs (strongly typed). For various examples on how to interact with native APIs in JavaScript/TypeScript, visit the Subclassing, iOS Marshalling and Android Marshalling pages.

Additional Resources ​

• Android d.ts Generator, for advanced types generation for Android