It works like this:
The user taps a distinct visual target and…
… a quick actions pop up is layered over the current screen containing the most important and obvious actions that can be performed.
The user selects an action that will be executed directly, or after a confirming in a dialog.
Use whenA quick actions pop over can be used when you want to provide actions for items that have competing internal targets. It has to be triggered from a distinct visual target, so the user knows that there's something he can do with it. Make sure the pop over is not blocking the screen like a traditional dialog, but popping above or below the item. Only use the most important and obvious actions in the quick actions pop over. For other contextual actions you can choose to add a context menu. Don't use quick actions when multiple selection is supported, like in Gmail. Use a button bar in that situation instead.
- Minimally disruptive to screen content
- It's fast
- It's fun
- Its user friendly (oscar)
- Visual targets can be hard to notice
- No build-in widget; text must be short. (Clinton)
- limited number of items can be displayed (Rinat)
Samsung Galaxy S Contacts