How to show/hide Toolbar when scrolling RecyclerView - [Android Animations - #07]

anh mới muốn cho nó scroll lên nhẹ xíu thì nó hiện cái toolbar lên thì làm sao ạ

video hay quá anh ơi mong anh ra nhiều video hay hơn nữa

There's a simpler way to import RecyclerView or AppBarLayout or any class made by Android or Google. To do it, go to a .java file, then type RecyclerView recyclerView; then RecyclerView becomes red, and press Alt+Enter on it then implement. It always 100% working and super fast.