Beginner Android why is “id” is “Unknown member” with R.id?

Question

I\'m sure this is something dead simple as it\'s my first android app with code (the hello world example I did was just assigning a value to a string in XML). My problem is

Answer 1

For those using AIDE having issues referencing Id, try deleting the "gen folder" located in the bin folder and recompile. The problem is the R.java class did not create a constructor called Id. So deleting the gen folder containing the R.java class and recompiling solves this issue.