Mario ：Interesting! Did you shade the two runtimes so you can supoort both 3.8 and 4.0? I could imagine some folks would find it useful to know how you approached that.
The only way I found is to change package name so both runtimes don't conflict each other.
Skin Compose added
version 0.9.4
Very cool!
Greetings from Ukraine!
Some updates I managed to implement:
I'm having issues with the app and Idk how to solve this problems
Crisilink ：I'm having issues with the app and Idk how to solve this problems
Sorry for a long answer, there's a war in my country. Could you provide some test files so I figure it out?
I know that it's been like 1 year, but if there's a chance of answer well i take it :
I can't launch any of those files on the app (it contains different spine versions files) If you could help me with resolving i this issue that would be cool
Probably you need to use the same editor version to export your data that matches the version of the runtime in the app. Alternatively, you can use the matching version of Skeleton Viewer:
http://esotericsoftware.com/spine-skeleton-viewer
If you have a Spine license you can run the matching version of the Spine editor and import the data.
@Keizen Fixed JSON opening in Release 1.2.1
Thanks for discovering this problem 
