Question Native plugin is not updated in build unless I delete and build twice

This is very annoying, I'm working on a native library which has frequent changes, when I switch the library in the project and build, it runs the same old library. I need to delete the library, build without it, add it, and build it again for it to be updated. I believe this is cached somewhere but I dont know where. any solutions?

 

The library is a DLL file placed somewhere in the Assets tree?
What do you mean by "switch the library"? You mean you replace it with a newly built version?

Try right-clicking the file after a change and choose Reimport. If the build then has the new version, the issue is because the AssetDatabase did not realize that the file has changed. This should not normally happen unless you have Auto-Refresh disabled.

It can also happen if an editor script has a bug causing the AssetDatabase auto-refresh to be "stopped". This can happen for example if an editor script uses AssetDatabase.StartAssetEditing without the recommended try/catch/finally block that calls StopAssetEditing in the finally block.

 

This is added in an empty project, its a native android library. I have not tried reimport but a dirty solution that works is going to the Library folder, searching for all instances of library, such as "libnative.so" and deleting them

 

There should be a little yellow text warning to this effect when you select the DLL. This is just how Unity works: shared libraries mounted are not dismounted until the editor exits.

Exit the editor when you update the library, then restart the editor.

Not sure what's in your native library, but Unity can directly compile C / C++ code just by putting it into Assets/Plugins/ and marking it for inclusion in various platforms.

Once I discovered this I was finally able to uninstall Jet-For-Brains Android Studio. Best uninstall I ever made. That thing took 14 minutes to compile my native libraries into an AAR, the same C / C++ code that Xcode built in 3 seconds.

 

Since just deleting the library in the Library folder works without exit, I'll stick with that. Also I'm directly compiling on the command line with NDK, no Android Studio or Java so it takes less than 10 seconds

 

Sure, I'll create a report