Android Question Works....but how

I have been paying around with resizing text to fit view. I created a small class with some code I got from Erel's autoLabel custom view. In the class, the sub that calculates, you pass the view name(lbl) and view text(value)
but I am passing edittexts, buttons etc. not just labels but it still works. Is this ok.......?
I have uploaded the project to Dropbox it is just a test app. Link: https://www.dropbox.com/s/e3tl6tujax4z9gf/TestScript.zip?dl=0