November 2008
Intermediate to advanced
272 pages
9h 16m
English
Content preview from Designing Gestural Interfaces
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TAP TO STOP
WHAT
When another action, such as scrolling, is in progress, tapping the screen stops the action.
USE WHEN
Use Tap to Stop when there is an ongoing action that takes an extended time to perform (more than several seconds) and that a user might want to interrupt—especially if the ongoing action is displaying a set of screens or objects that the user might want to act on (e.g., a menu item or a list of content).
WHY
This pattern allows users to manually stop a moving object, something humans expect to be able to do with their hands.
HOW
Tap to Stop can cancel/stop an ongoing action or simply pause the action, depending on need. If it is pausing an ongoing action, a second, distinct tap should restart the action.
EXAMPLES
Figure 3-25. Pocket Player for Windows Mobile allows taps to stop scrolls. Courtesy Conduits Technologies, Inc.
Figure 3-26. The Starbucks version of iTunes on the iPhone allows users to scroll through a list of songs recently played in the store. Tapping the scrolling list stops it. Courtesy Nick Starr.
Figure 3-27. The Zune allows you to stop scrolling lists with a tap. Courtesy Microsoft.
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