An AdapterView is a group of widgets (aka view) components in Android that include the ListView, Spinner, and GridView. In general, these are the widgets that provide the selecting capability in the user interface (read about AdapterView widgets here).
O le a le eseesega i le va o le adapter ma le AdapterView e tuʻuina atu ni faʻataʻitaʻiga se lua o se AdapterView?
An Adapter isn’t an actual view, but instead produces them. An AdapterView is a ViewGroup that gets its child views from an Adapter . E.g. a ListView has a child view for each row in its list. Those child views are created and bound with data by an Adapter .
O le a le mea fa'apipi'i faavae i le Android?
Adapter o se alalaupapa i le va o UI ma faʻamatalaga faʻamatalaga, E fesoasoani ia i matou e faʻatumu faʻamatalaga i vaega UI. Adapter Fa'avae o se vasega fa'avae masani o se fa'atinoga lautele o se Adapter. … E masani ona faʻaaogaina i ListView, GridView, Spinner ma isi.
O le a le spinner Android?
Spinners provide a quick way to select one value from a set. In the default state, a spinner shows its currently selected value. Touching the spinner displays a dropdown menu with all other available values, from which the user can select a new one. You can add a spinner to your layout with the Spinner object.
O le a le Android view?
Va'aiga o le poloka faufale autu o UI (User Interface) i le Android. Va'aiga e faasino i le Android. E mafai ona avea ma ata, se fasi tusitusiga, se faamau poʻo soʻo se mea e mafai ona faʻaalia e se Android application. … O le rectangle iinei e le o vaaia, ae o vaaiga uma lava e iai se foliga faatafafa.
E fa'afefea ona ou maua le AdapterView ile gaioiga?
- fai se fa'afofoga fa'afofoga fa'afofoga ma tu'u atu i le recyclerview adapter class fa'afeso'ota'i lautele Callback{ onSpinnerSelected(int position, Object selection); }
- pasi atu nei i lau mea fa'apipi'i fa'apenei ma tu'u se fa'amatalaga o le gaioiga po'o se vaega o lo'o e fa'aogaina ai.
What is AdapterView?
AdapterView o se ViewGroup e faʻaalia ai mea o loʻo utaina i totonu o se mea faʻapipiʻi. Ole ituaiga fa'apipi'i masani e sau mai se fa'amaumauga fa'amaumauga fa'avae.
O le a le faʻaogaina o notifyDataSetChanged i le Android?
notifyDataSetChanged() fa'ata'ita'iga:
O lenei gaioiga Android e logoina ai le au mata'i fa'apipi'i ua suia fa'amaumauga autu ma so'o se Va'aiga e atagia ai le seti fa'amaumauga e tatau ona toe fa'afouina ia lava.
O le a le eseesega i le va o ArrayAdapter ma BaseAdapter i le Android?
BaseAdapter is a very generic adapter that allows you to do pretty much whatever you want. However, you have to do a bit more coding yourself to get it working. ArrayAdapter is a more complete implementation that works well for data in arrays or ArrayList s.
O le a le ListView i le Android?
Fa'asalalauga. Android ListView o se va'aiga lea e fa'avasega ai ni mea ma fa'aali i luga o le lisi fa'asolo i luga. O mea o le lisi e otometi lava ona fa'aofi i le lisi e fa'aaoga ai se Adapter e toso mea mai se puna e pei o se laina po'o se fa'amaumauga.
E fa'afefea ona ou iloa ua gaogao la'u spinner Android?
Manatu: O le Spinner i le Android o le mea moni o se aofaʻiga o tusitusiga o loʻo lisiina e tusa ai ma le numera o faʻamaumauga i le lisi. Pau lava le mea e tatau ona e faia o le, siaki pe o avanoa le spinner ona filifili lea o le faʻaaliga le lelei o tusitusiga ma seti le feʻau sese i lena vaʻaiga tusitusiga.
E mafai faapefea ona ou faia la'u lava spinner?
Laasaga e Fausia ai se Spinner Fa'apitoa:
- A'o le'i faia auala: Fa'ailoa se Fa'asologa o mea e tatau ona fa'aalia i le Spinner. …
- Totonu i luga o le Fausia auala : Fa'aigoa lomitusi. …
- A mae'a ona fa'atupu auala:…
- Fausia se faila XML e ta'ua o le activity_mail.xml. …
- Fausia se faila XML e igoa o custom.xml :
25 nov Tes 2020
E fa'afefea ona ou fa'aogaina le sili atu ma le tasi le spinner i le Android?
E mafai ona e fa'asoa le mea fa'apipi'i i le va o Spinner 'ese'ese pe a latou fa'afetaui fa'amatalaga tutusa. E manino lava e manaʻomia e au tagata faʻapipiʻi taʻitasi ona faʻafetaui se seti eseese o String s, o lea e tatau ai ona e fatuina se ArrayAdapter mo Spinner taʻitasi. E tasi le OnItemSelectedListener o le a galue mo le 3 Spinners (pe a e setiina).
O le a le faʻaogaina o le OnClickListener i le Android?
I le Android, o le OnClickListener() interface e iai le onClick(View v) auala e ta'ua pe a kiliki le va'aiga (vaega). O le fa'ailoga mo galuega a se vaega o lo'o tusia i totonu o lenei metotia, ma fa'atonu le tagata fa'alogologo e fa'aaoga le setOnClickListener() metotia.
O le a le fa'aoga ole findViewById ile Android?
findViewById o le auala lea e maua ai le View e le ID o loʻo tuʻuina atu. Lea findViewById(R. id. myName) su'e le Va'aiga ma le igoa 'myName'.
O a ituaiga o faʻatulagaga i le Android?
Ituaiga o Layouts i le Android
- Fa'atonu laina.
- Fuafuaga Fa'atatau.
- Fa'atonu Fa'atonu.
- Fa'atulagaina o laulau.
- Fa'atulagaina o Fa'avaa.
- Lisi Va'aiga.
- Va'aiga Grid.
- Fa'atonu atoatoa.