iOS人机交互规范(21)

iOS人机交互规范,为iPhone,iPad开发人员提供设计规范

CreateanApplicationDefinitionStatement

●Findingingredientsubstitutions

2.DetermineWhoYourUsersAre

Apartfromthelikelihoodthatyourusersaremobileandthattheyexpectbeautifulgraphics,simpleinteractions,andhighperformance,whatdistinguishesthem?Inthecontextoftheappyou’replanning,whatismostimportanttoyourusers?Usingthegrocery-shoppingexample,youmightaskwhetheryourusers:

●Usuallycookathomeorpreferready-mademeals

Arecommittedcoupon-usersorthinkthatcouponsaren’tworththeeffort

Enjoyhuntingforspecialityingredientsorseldomventurebeyondthebasics

Followrecipesstrictlyoruserecipesasinspiration

Buysmallamountsfrequentlyorbuyinbulkinfrequently

Wanttokeepseveralin-progresslistsfordifferentpurposesorjustwanttorememberafewthingstobuyonthewayhome

Insistonspecificbrandsormakedowiththemostconvenientalternatives

Tendtobuyasimilarsetofitemsoneachshoppingtriporbuyitemslistedinarecipe ● ● ● ● ● ● ●

Aftermusingonthesequestions,imaginethatyoudecideonthreecharacteristicsthatbestdescribeyourtargetaudience:Lovetoexperimentwithrecipes,areofteninahurry,andarethrifty(ifitdoesn’ttaketoomucheffort).

3.FiltertheFeatureListThroughtheAudienceDefinition

If,afterdecidingonafewaudiencecharacteristics,youendupwithjustafewfeatures,you’reontherighttrack:GreatiOSapplicationshavealaserfocusonthetaskuserswanttoaccomplish.

Forexample,considerthelargenumberofpossiblefeaturesforthegrocery-shoppingappyoulistedinStep

1.Eventhoughtheseareallusefulfeatures,it’snotlikelythateveryfeaturewouldbeequallyusefultoeveryuser.Moreimportantly,it’snotlikelythateveryfeaturewouldbeequallyappreciatedbytheaudienceyoudefinedinStep2.

Whenyouexamineyourfeaturelistinthecontextofyourtargetaudience,youconcludethatyourapplicationshouldfocusonthreemainfeatures:Creatinglists,gettingandusingcoupons,andgettingrecipes.

Nowyoucancraftyourapplicationdefinitionstatement,concretelysummarizingwhattheappdoesandforwhom.Agoodapplicationdefinitionstatementforthisgrocery-shoppingappmightbe:

“Ashoppinglistcreationtoolforthriftypeoplewholovetocook.“