I’m working on integrating a music streaming service SDK with my Xamarin iOS app but running into some issues. I’ve been following the standard process for native library binding but something isn’t right.
Here’s what I’ve done so far:
- Extracted the static library file (.a) from the original framework
- Added this library file to my Xamarin project
- Created the binding definitions following the official documentation
- Set up the necessary compiler flags in the project settings
Everything builds without errors and the linking process completes successfully. However, when I try to run the app on device or simulator, I get a runtime error: System.DllNotFoundException: __internal
This error suggests there might be an issue with how the native library is being loaded or referenced at runtime. I’m not sure if this is related to the binding configuration, linker settings, or something else entirely.
Has anyone encountered similar issues when binding native iOS libraries? Any suggestions on what might be causing this exception would be really helpful.
check your linker settings first. try cleaning and rebuilding the project - that usually fixes weird runtime issues. also, make sure your native library paths are configured right. might be a quick fix!
The __internal exception usually means your native library architecture doesn’t match your deployment target. I hit this exact issue binding a media SDK last year. Run lipo -info on your .a file to check it has the right architectures. If you’re targeting simulator and device, you’ll need a fat library with both x86_64 and arm64. Also check your minimum iOS version - the native library might need a higher deployment target than what’s in your Xamarin project. And make sure the original SDK doesn’t have initialization requirements or dependencies you need to call before using the bound methods.
Native iOS bindings are a nightmare. I’ve wasted too much time on this - it’s always a sink.
Skip the Xamarin bindings mess. Use Latenode for music streaming integration through APIs instead. Streaming services have REST APIs that actually work, unlike their native SDKs.
I built a music app last year this way. Created a Latenode workflow connecting to Spotify’s Web API and Apple Music API. It handles auth, playlists, and streaming control via HTTP requests.
You’ll dodge architecture mismatches, linker problems, and deployment hell. Want to switch streaming services or add new ones? Easy - no mobile code changes needed.
Latenode handles response caching and rate limiting automatically (native SDKs always screw this up). Your app just makes simple HTTP calls to Latenode endpoints.
Save yourself weeks of debugging: https://latenode.com
I encountered a similar issue while binding a third-party audio SDK for iOS. The key was ensuring that the .a file was set as an embedded resource in the binding project. Although the build succeeded, the native code wasn’t accessible at runtime due to improper settings. Ensure you set the Build Action for your .a file to ‘ObjcBindingNativeLibrary’. Also, confirm your ApiDefinition.cs file calls [DllImport(‘__Internal’)] rather than the library by its name. Don’t forget to link any necessary iOS frameworks like AVFoundation and MediaPlayer.