CollapsingToolbarLayout: Keep Toolbar but hide TabLayout with quick return

问题

I want the Toolbar to always be visible and have the TabLayout get scrolled away and quick return but this combination seems impossible.

<CoordinatorLayout>
    <AppBarLayout>
        <CollapsingToolbarLayout layout_scrollFlags="scroll|exitUntilCollapsed">
            <TabLayout/>
            <Toolbar layout_collapseMode="pin" />
        </CollapsingToolbarLayout>
    </AppBarLayout>
    <ViewPager/>
</CoordinatorLayout>

This makes my Toolbar not scroll away, but it makes the TabLayout only return when scrolled to the top of the list.

Changing to scroll|enterAlwayson the CollapsingToolbarlayout makes the Toolbar scroll away too.

回答1:

A solution was to have the CollapsingToolbarLayout have these scroll flags.

app:layout_scrollFlags="scroll|exitUntilCollapsed|enterAlways"

But the shadow is missing..

来源：https://stackoverflow.com/questions/39142960/collapsingtoolbarlayout-keep-toolbar-but-hide-tablayout-with-quick-return