A scroll bar indicates the current position on a page as users scroll through with a rotary action or a swipe.
Use a scroll bar for text that does not fit on one screen.
A scroll bar appears when users first access a page and disappears shortly after. It reappears when users scroll the screen.
A screen scrolls more quickly when users flick the screen. The scrolling speed is proportional to the speed of the gesture.
Vertical scroll bar
Use a vertical scroll bar when a page scrolls up and down. It forms an arc of 90 degrees on the right side of the screen.
Horizontal scroll bar
Use a horizontal scroll bar when a page scrolls right and left. It forms an arc of 90 degrees at the top of the screen.
Fast rotary or swiping action
A fast scroll index allows users to jump directly to the previous or next group index in a list.
Fast rotary action
A fast scroll index allows users to move directly to the previous or next group index. Only display the first letter of the index title in the center of the screen when users move to a new group index with a rotary or swiping action.
Fast scroll indexes only respond to a quick rotary or swiping action. When users rotate the bezel slowly or swipe the screen slowly , the list scrolls.
Rotary action on fast scroll index
Once fast scroll indexes are displayed, users can jump to the previous/next group index by rotating the bezel slowly.