http://www.jianshu.com/p/2683a519b3cf
3.demo中第一个fragment是普通情况,第二个fragment是RecyclerView布局的情况,使用RecyclerView布局记得加.setNestedScrollingEnabled(false)
kylinScrollView.getScrollView().setOnScrollChangeListener(new NestedScrollView.OnScrollChangeListener() {
@Override
public void onScrollChange(NestedScrollView v, int scrollX, int scrollY, int oldScrollX, int oldScrollY) {
if (scrollY >= cTab.getTop()+contentView.getTop()){
tTab.setVisibility(View.VISIBLE);
}else {
tTab.setVisibility(View.GONE);
}
}
});
android:fillViewport="true"
app:layout_behavior="@string/appbar_scrolling_view_behavior"