iOS人机交互规范(13)

发布时间：2021-06-05 来源：未知

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iOS人机交互规范,为iPhone,iPad开发人员提供设计规范

PlatformCharacteristics

PreferencesAreAvailableinSettings

Note MultitaskingisavailableoncertaindevicesrunningiOS4andlater.

Mostappsenterasuspendedstatewhentheytransitiontothebackground.SuspendedappsaredisplayedinthemultitaskingUI,whichprovidesaneffectivewaytofindrecentlyusedapps.ThemultitaskingUIappearsatthebottomofthescreen,belowtheUIofthecurrentlyrunningapportheHomescreen(shownherebelowtheiPhoneSettings

app).

Whenpeoplerestartasuspendedapp,itcaninstantlyresumerunningfromthepointwhereitquit,withouthavingtoreloaditsuserinterface.

Someapplicationsmightneedtocontinuerunninginthebackgroundwhileusersrunanotherappintheforeground.Forexample,usersmightwantanappthatplaysaudiotocontinueplayingwhilethey’reusingadifferentapptochecktheircalendarorhandleemail.

Tolearnhowtohandlemultitaskingcorrectlyandgracefully,see“Multitasking” (page 74).

PreferencesAreAvailableinSettings

PeoplesetcertainpreferencesforaniOSapplicationinthebuilt-inSettingsapplication.TheymustquitthecurrentappwhentheywanttoaccessthosepreferencesinSettings.

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