android developer question

Question

I am looking the R.java file and I saw this under the app_name 0x7f040001. I know that is some kind of encryption because it displays hello world i believe. There are other ones there but I was just wonder what encryption that is.

Thanks for any help

Answer 1

Those numbers are just unique resource identifiers. No encryption (it wouldn't be possible to encrypt a variable length string and get a 32-bit integer).

Answer 2

At compile time, Android generates a class named R that contains resource identifiers to all the resources in your program. This class contains several subclasses, one for each type of resource supported by Android, and for which you provided a resource file.

Each class contains one or more identifiers for the compiled resources, that you use in your code to load the resource. More info here.