Nawu umehluko: I-BaseAdapter iyi-adaptha ejwayelekile kakhulu ekuvumela ukuthi wenze kahle kakhulu noma yini oyifunayo. Kodwa-ke, kufanele wenze okuthe xaxa ukufaka amakhodi ngokwakho ukuze kusebenze. I-ArrayAdapter iwukuqaliswa okuphelele kakhulu okusebenza kahle kudatha kumalungu afanayo noma i-ArrayList s.
Iyini i-ArrayAdapter ku-Android?
I-ArrayAdapter i i-adaptha esetshenziswa kakhulu ku-android. Uma unohlu lwezinto zohlobo olulodwa ezigcinwe ohlwini ungasebenzisa i-ArrayAdapter. Ngokufanayo, uma unohlu lwezinombolo zocingo, amagama, noma amadolobha. I-ArrayAdapter inesakhiwo esine-TextView eyodwa.
Iyini i-BaseAdapter Android studio?
I-BaseAdapter, njengoba negama layo lisho, injalo isigaba sesisekelo sokusetshenziswa kwe-adaptha kakhonkolo eminingi ku-Android. Kuyinto engabonakali ngakho-ke, ayikwazi ukufakwa ngokuqondile. Uma umthombo wakho wedatha kuwuhlu lwe-ArrayList noma amalungu afanayo, singaphinda sisebenzise i-ArrayAdapter construct njengenye indlela.
Iyini ukusetshenziswa kwe-adaptha ku-android?
Into ye-Adapter isebenza njengebhuloho phakathi kwe-AdapterView kanye nedatha eyisisekelo yalokho kubuka. I-adaptha inikeza ukufinyelela ezintweni zedatha. I-adaptha futhi inesibopho sokwenza Ukubuka kwento ngayinye kusethi yedatha.
Ibizwa ngani i-adaptha ye-Android?
Ku-Android, i-Adapter i ibhuloho phakathi kwengxenye ye-UI nomthombo wedatha lokho kusisiza ukuthi sigcwalise idatha engxenyeni ye-UI. Ibamba idatha futhi ithumele idatha ekubukeni kwe-Adaptha bese ukubuka kungathatha idatha ekubukeni kwe-adaptha futhi ibonise idatha ekubukweni okuhlukene njengokuthi ListView, GridView, Spinner njll.
Iyini i-ListView ku-android?
I-Android ListView i i-ViewGroup esetshenziselwa ukubonisa uhlu lwezinto emigqeni eminingi futhi iqukethe i-adaptha eshutheka izinto ohlwini. Injongo eyinhloko ye-adaptha iwukuba ukulanda idatha kumalungu afanayo noma isizindalwazi bese ufaka into ngayinye ebekwe ohlwini ukuze uthole umphumela oyifunayo.
Iyini i-RecyclerView Android?
I-RecyclerView i i-ViewGroup equkethe ukubukwa okuhambisana nedatha yakho. Ukubuka ngokwakho, ngakho wengeza i-RecyclerView esakhiweni sakho ngendlela obungeza ngayo noma iyiphi enye into ye-UI. … Ngemva kokuthi isibambi sokubuka sesidaliwe, i-RecyclerView isibophezela kudatha yayo. Uchaza isibambi sokubuka ngokwelula i-RecyclerView.
Yiziphi izixhumanisi ku-Android?
I-interface yomsebenzisi (UI) yohlelo lokusebenza lwe-Android yi yakhelwe njengochungechunge lwezakhiwo namawijethi. Izakhiwo ziyizinto ze-ViewGroup, iziqukathi ezilawula ukuthi ukubukwa kwengane yazo kumiswa kanjani esikrinini. Amawijethi ayizinto zokubuka, izingxenye ze-UI njengezinkinobho namabhokisi ombhalo.
Yini i-onBindViewHolder ku-Android?
i-onBindViewHolder(umnikazi we-VH, indawo engaphakathi) Ibizwe yi-RecyclerView ukuze ubonise idatha endaweni eshiwo. ize. ku-BindViewHolder(umnikazi we-VH, isikhundla se-int, Uhlu imithwalo ekhokhelwayo) Ishayelwe i-RecyclerView ukuze ibonise idatha endaweni eshiwo.
Yini i-adaptha elula ku-Android?
android.widget.SimpleAdapter. I-adaptha elula yokwenza kumephu idatha emile ekubukeni echazwe efayeleni le-XML. Ungacacisa idatha esekela uhlu njenge-ArrayList of Maps. Okufakiwe ngakunye ku-ArrayList kuhambelana nomugqa owodwa ohlwini.
Ibizwa ngani i-getView ku-Android?
2 Izimpendulo. getView() ibizwa ngento ngayinye esohlwini oyidlulisela ku-adaptha yakho. Kubizwa uma usetha i-adaptha. Uma i-getView() isiqediwe umugqa olandelayo ngemva kokuthi i-setAdapter(myAdapter) ibizwa.
Uma inkinobho ichofozwa yimuphi umlaleli ongawusebenzisa?
Uma unomcimbi wokuchofoza inkinobho engaphezu kweyodwa, ungasebenzisa i-switch case ukuze ubone ukuthi iyiphi inkinobho echofozwayo. Xhumanisa inkinobho esuka ku-XML ngokushayela indlela ye-findViewById() bese usetha indlela onChofoza mlaleli ngokusebenzisa i-setOnClickListener() indlela. I-setOnClickListener ithatha into ye-OnClickListener njengepharamitha.
Iyini imisebenzi ku-Android?
Usebenzisa umsebenzi njengesigaba esingaphansi sekilasi Lomsebenzi. Umsebenzi inikeza iwindi lapho uhlelo lokusebenza ludonsa i-UI yalo. … Ngokuvamile, umsebenzi owodwa usebenzisa isikrini esisodwa kuhlelo lokusebenza. Ngokwesibonelo, omunye wemisebenzi yohlelo lokusebenza ungase usebenzise isikrini esithi Okuthandwayo, kuyilapho omunye umsebenzi usebenzisa okuthi Khetha isikrini sesithombe.