the length of toolbar is fix, it can't scroll outside of the screen, when the items are more and more, but the length is fixed, so the average length of the items is less and less

[wzrthhj]

the length of toolbar is fix, it can't scroll outside of the screen, when the items are more and more, but the length is fixed, so the average length of the items is less and less

[wzrthhj]

Replace the super class UIToolbar with UIView-- that fix can't scroll bug