I'm a total beginner at programming. I started a new project in Android Studio, in Java. In the activity_main, I get the "URI is not registered" message, and I don't know how to solve it.
I'm aware to the fact that this issue has appeared in previous questions, but I've tried some of the suggested solutions there and they didn't work for me: I tried to invalidate and restart, I deleted all the contents in the idea folder, and my project is ordered: MyProject/src/res/layout/activity_main, which (I think) is the correct order.
Any suggestions?
EDIT: I deepened a little more in this question, but the solutions didn't help me: I didn't understand some of them (remind you, I'm a beginner), and the ones I did understand didn't work. Perhaps they simply don't work for the newer versions of Android Studio?
Anyway, here's a screenshot of the error:
