Eclipse not auto-generating IDs from XML files for R.java

Question

As far as I understand from the Android manual, IDs that contain the "+" (plus) sign automatically get generated in the corresponding R.java file in Eclipse. However, when I attempt to run my program, Eclipse says that the ID cannot be resolved and offers me as a possible solution to manually add that as an entry in the "id" file. But it puts the value of 0 as a default value.
How do I make it have a value just like the other IDs have their own hex value (ie 0x7f03000d)?

Answer 1

Check the files names in the folder res

They should not contain spaces or special characters and must be lowercase