Extract Support Library layout attributes into styles

Question

I am extracting styles for views which are inside Support Library\'s GridLayout.

Therefore, I have both attributes from the \"android\" namespace, e.g.

Answer 1

I have found this answer to a similar question. The same solution worked for me.

Just leave out the namespace prefix for the non-"android" attributes:

app:layout_columnSpan="2" in the layout becomes

<item name="layout_columnSpan">2</item> in the styles, and not

<item name="app:layout_columnSpan">2</item>