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:

<android.support.v7.widget.GridLayout 
     xmlns:grid="http://schemas.android.com/apk/res-auto"
     xmlns:android="http://schemas.android.com/apk/res/android">
...
</android.support.v7.widget.GridLayout>

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

<ImageButton android:id="@+id/btnSentence"
    grid:layout_row="0"
    grid:layout_column="0"
    ...
/>

Hope it helps...