iOS人机交互规范(12)

iOS人机交互规范,为iPhone,iPad开发人员提供设计规范

PlatformCharacteristics

PeopleInteractwithOneAppataTime

Table1-2

GestureGesturesusersmaketointeractwithiOS-baseddevicesAction

Tap

DragTopressorselectacontroloritem(analogoustoasinglemouseclick).Toscrollorpan(thatis,movesidetoside).

Todraganelement.

Flick

SwipeToscrollorpanquickly.Withonefinger,torevealtheDeletebuttoninatable-viewrowortoreveal

NotificationCenter(fromthetopedgeofthescreen).

Withfourfingers,toswitchbetweenappsoniPad.

DoubletapTozoominandcenterablockofcontentoranimage.

Tozoomout(ifalreadyzoomedin).

PinchPinchopentozoomin.

Pinchclosetozoomout.

Touchandhold

ShakeIneditableorselectabletext,todisplayamagnifiedviewforcursorpositioning.Toinitiateanundoorredoaction.

Inadditiontothesegestures,peoplecanmovetheiPhone4SitselftoactivateSiri.Peopleexpectallthesegesturestoworkthesame,regardlessoftheappthey’recurrentlyrunning.

PeopleInteractwithOneAppataTime

Onlyoneapplicationisvisibleintheforegroundatatime.Whenpeopleswitchfromoneapptoanother,thepreviousappquitsanditsuserinterfacegoesaway.

PriortoiOS4,thismeantthatthequittingappwasimmediatelyremovedfrommemory.IniOS4andlater,thequittingapptransitionstothebackground,whereitmayormaynotcontinuerunning.Thisfeature,calledmultitasking,allowsappstoremaininthebackgrounduntiltheyarelaunchedagainoruntiltheyareterminated.