nestedscrollview

Material Design Samples。ConstraintLayout、MaterialButton、ShapeableImageView、TabLayout、SearchView...

extended nested scroll view to fix following issues. 1.pinned sliver header issue 2.inner scrollables in tabview sync issue 3.pull to refresh is not work. 4.do without ScrollController in NestedScrollView's body

A widget for observing data related to the child widgets being displayed in a ScrollView. Maintainer: @LinXunFeng