android编程权威指南-毕业论文外文文献翻译

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1、附录一：英文原文AndroidProgrammingthebignerdranchguideCreatingUserInterfaceswithLayoutsandWidgetsInthischapter,youwilllearnmoreaboutlayoutsandwidgetswhileaddingacrime’sdateandstatustoCriminalIntent.UpgradingCrimeOpenCrime.javaandaddtwonewfields.TheDatefieldrepresentsthedateacri

2、meoccurred.Thebooleanfieldrepresentswhetherthecrimehasbeensolved.Listing8.1AddingmorefieldstoCrime(Crime.java)publicclassCrime{privateUUIDmId;privateStringmTitle;privateDatemDate;privatebooleanmSolved;publicCrime(){mId=UUID.randomUUID();mDate=newDate();}...}Initializing

3、theDatevariableusingthedefaultDateconstructorsetsmDatetothecurrentdate.Thiswillbethedefaultdateforacrime.Next,generategettersandsettersforyournewfields(Source→GenerateGettersandSetters...).Listing8.2Generatedgettersandsetters(Crime.java)publicclassCrime{...publicvoidset

4、Title(Stringtitle){mTitle=title;}publicDategetDate(){returnmDate;}publicvoidsetDate(Datedate){mDate=date;}publicbooleanisSolved(){returnmSolved;}publicvoidsetSolved(booleansolved){mSolved=solved;}}Yournextstepsareupdatingthelayoutinfragment_crime.xmlwithnewwidgetsandwir

5、ingupthosewidgetsinCrimeFragment.java.UpdatingtheLayoutHereiswhatCrimeFragment’sviewwilllooklikebytheendofthischapter.Figure8.1CriminalIntent,episode2Togetthisonscreen,youaregoingtoaddfourwidgetstoCrimeFragment’slayout:twoTextViewwidgets,aButton,andaCheckBox.Openfragmen

6、t_crime.xmlandmakethechangesshowninListing8.3.Youmaygeterrorsfrommissingstringresourcesthatyouwillcreateinamoment.Listing8.3Addingnewwidgets(fragment_crime.xml)

7、roid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical">

8、extandroid:id="@+id/crime_title"android:layout_width="match_parent"android:layout_height="wrap_content"android