How can I determine that CollapsingToolbar is collapsed?

Question

I need to know when CollapsingToolbar from material design library is collapsed.

Answer 1

UPDATE: Since support versions of 23.1.1+ the issue is no longer there, no need to use the listener and disable the swipe refresh layout, it will work as it should (link).

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Implement AppBarLayout.OnOffsetChangedListener listener on your AppBarLayout

AppBarLayout appBarLayout = (AppBarLayout) view.findViewById(R.id.app_bar_layout);
appBarLayout.addOnOffsetChangedListener(this);

And check if offset is 0, meaning the toolbar is fully expanded.

@Override
public void onOffsetChanged(AppBarLayout appBarLayout, int offset)
{
    if (offset == 0)
    {
        // Fully expanded
    }
    else
    {
        // Not fully expanded or collapsed
    }
}