Reflectively accessing final static variable without initialization

Question

I am trying to access a bunch of final static public ints from a class using reflection. This class however doesn't have a constructor - e.g. the android R.id . I am trying to get all int values for these, however I can't seem to access it due to the fact that you can't create the class. I was thinking of possible extending it just to create a constructor, but I am unsure this is wise. Any suggestions? I can't modify R.id or R.array (at least I shouldn't I think).

Thanks in advanced! Jon

possible duplicate http://stackoverflow.com/questions/850148/accessing-java-static-final-ivar-value-through-reflection — Simeon, Mar 23 '11 at 14:17

score 3 · Accepted Answer · answered Mar 23 '11 at 13:47

3

That's all you need:

Field field = R.id.class.getField("some_var");
int value = field.getInt(null);

answered Mar 23 '11 at 13:47

Vladimir Ivanov

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The point is that you can pass "null" to the get methods to access static members. – Arne Deutsch Mar 23 '11 at 14:12
Thanks! I have tried that, but I get a null pointer exception, let me get the code and post it... thanks! – Jon Mar 23 '11 at 19:26

Reflectively accessing final static variable without initialization

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