When I wanna create a new project in AS I get this error:

Cannot access 'androidx.fragment.app.FragmentActivity' which is a supertype of 'com.example.test123.MainActivity'. Check your module classpath for missing or conflicting dependencies

After that I can not build/rebuild or run my clean new project. any idea? Thanks in advance.

CodePudding user response：

i got the same issue with my gradle and project build/rebuild, the solution however is somehow random but i tried to remove the contents of my ".gradle" folder to force my project to download it from scratch.

After doing that in the AS i changed the gradle plugin version to a latest release (ex. alpha x.xx) in File -> Project Structure and rebuild project and then again reverted back to latest stable release and my project built without any issue.

CodePudding user response：

Check if you have the appcompat library in the app's build.gradle file. If it's still not working, try to invalidate caches and restart.