For an Android app, I have the following functionality
private ArrayList _categories; // eg [\"horses\",\"camels\"[,etc]]
private int getCateg
There is indeed a fancy shmancy native function in java you should leverage.
ArrayList has an instance method called
indexOf(Object o)
(http://docs.oracle.com/javase/6/docs/api/java/util/ArrayList.html)
You would be able to call it on _categories as follows:
_categories.indexOf("camels")
I have no experience with programming for Android - but this would work for a standard Java application.
Good luck.