GridLayout from support library does not show 2 rows on Android 2, onChildVisibilityChanged Error

Question

Has anybody gotten the support library to render a grid layout correctly in Android 2? Instead of 2 rows and columns I get a single row on the screen and see this error in the

Answer 1

I guess you missed to add XML namespace. Please correct it in this way:

...

and don't forget to prefix attributes used by compatibility GridLayout with XML namespace too:

Hope it helps...