Any and all layout I create does not show elements like LinearLayout, RecyclerView and others. Only the options below (and the errors too)
Also, XML always has an error saying that width or height is missing, but everything is fine (as in the image above). I already imported everything that had to import but unfortunately the error continues.
Clean, rebuild, sync and invalidate cache do not work. Do you know what it can be?
Additional Information:
- Everything started on Android 3.2.1
- I'm also having another problem that can be interlinked: Android Studio 3.2.1 does not find "Default Activity"