Nthawi zonse mukakankhira ntchito pa stack, onCreate imatchedwa, ndipo mukasindikiza batani lakumbuyo, onDestroy imatchedwa, zomwe zikutanthauza kuti ntchitoyo imachotsedwa. Njira zotsatirazi zoyimbira foni zimatchedwa, mutakanikizanso batani. Ntchitoyi yawonongeka. Ndipo imayambiranso ikayambikanso.
Kodi ndingadziwe bwanji ngati batani langa lakumbuyo la Android likanikizidwa?
Kuti muwone ngati batani la 'BACK' likanikizidwa, gwiritsani ntchito njira ya onBackPressed() kuchokera mulaibulale ya Android. Kenako, chitani cheke kuti muwone ngati batani la 'BACK' likanikizidwanso mkati mwa masekondi a 2 ndipo litseka pulogalamuyi ngati zili choncho.
Kodi chimachitika ndi chiyani mukakanikiza batani lakunyumba mu Android?
M'malo mwake ngati batani la Home likanikizidwa, pulogalamuyo imasunthira kumalo Oyimitsidwa, ikugwirabe kumbuyo. … Pali lingaliro la Ntchito mu Android. Pulogalamuyi imaphatikizapo njira zomwe zochita zanu zimayendera, kukumbukira komwe amagwiritsa ntchito, ndi makalasi ena aliwonse omwe amasungidwa pamtima.
Kodi mumathetsa bwanji ntchito yokanikiza kumbuyo pa Android?
Mukayimba finish() kuchokera pa onStop() ndiye kuti ntchitoyo ikutumizidwa kumbuyo, motero siziwonekanso, ndiye izi. Mukasindikiza batani lakumbuyo, onStop() imatchedwa. Mwinamwake, Android idzakuchitirani zomwe mukufuna kuchita panopa.
Kodi ndingayambitse bwanji kusindikiza pa Android?
Pokhapokha kuyimba foni ikayatsidwa (ie, isEnabled() kubwereranso) komwe wotumiza adzayimbira chogwirizira cha callbackOnBackPressed() kuti agwire batani la Back. Mutha kusintha zomwe zayatsidwa poyimba setEnabled() . Ma callback amawonjezedwa kudzera mu njira za addCallback.
Kodi ndimayika bwanji batani lakumbuyo pazida zanga za Android?
Onjezani Batani Lambuyo mu Action Bar
- Pangani kusintha kwa bar ndi kuyimba ntchito getSupportActionBar() mu fayilo ya java/kotlin.
- Onetsani batani lakumbuyo pogwiritsa ntchito ActionBar. setDisplayHomeAsUpEnabled(zoona) izi zithandizira batani lakumbuyo.
- Sinthani zochitika zakumbuyo pa OnOptionsItemSelected.
23 pa. 2021 g.
Kodi ndimagwiritsa ntchito bwanji OnBackPressed?
Momwe mungagwiritsire ntchito njira ya onBackPressed mu android.app.Activity
- WeakReference mActivity;mActivity.get()
- Mulu wa ntchitoStack;activityStack.lastElement()
- (Zochita) param.ThisObject.
Kodi ndimagwiritsa ntchito bwanji batani lanyumba pa Android yanga?
Ingosiyani paPause kapena onStop , ndikuwonjezera chipika pamenepo. Android Home Key yoyendetsedwa ndi chimango simungathe kuchita izi pamlingo wa pulogalamu. Chifukwa batani lakunyumba lafotokozedwa kale mulingo uli pansipa. Koma ngati mukupanga ROM yanu yachizolowezi, ndiye kuti zitha kukhala zotheka.
Kodi ndimayimitsa bwanji batani la Home pa Android?
Sankhani ndondomeko yomwe ilipo kapena pangani yatsopano podina New Policy. Kuchokera ku Android, sankhani Zoletsa ndikudina Konzani. Pansi pa Lolani Kugwira Ntchito kwa Chipangizo, mudzakhala ndi zosankha kuti muyimitse batani la Home/Power. Batani Lanyumba-Chotsani chosankha ichi kuti muletse ogwiritsa ntchito Batani Lanyumba.
Ndi callback iti yomwe imatchedwa batani ikalumikizidwa?
kugogoda batani la Pakhomo kumapanga cholinga chotsegula Chowonekera Choyambira ndiyeno kuyambitsa cholinga chimenecho. Zolondola. Ngati ndi choncho, ndingayembekezere njira ya onCreate() kuti iyendetsedwe nthawi iliyonse chophimba chakunyumba chikapangidwa. Osati kwenikweni. Ngati ikugwira ntchito kale, imatchedwa onNewIntent() .
Kodi mumawongolera bwanji ntchito yotsekeredwa kumbuyo?
Njira ziwiri zoyankhira zomwe mungakumane nazo ndi:
- @override public void onBackPressed(){ super.onBackPressed(); kumaliza (); }
- @Override public boolean onKeyDown(int keyCode, KeyEvent event) {ngati ((keyCode == KeyEvent.KEYCODE_BACK)) {bwererani zabodza; } bwererani super.onKeyDown(keyCode, chochitika); }
26 inu. 2015 g.
Kodi mumayendetsa bwanji kuyenda pansi bwino ndi makina osindikizira?
Yesani izi kuti mukwaniritse izi: posindikiza kumbuyo: kuchokera pachidutswa chanyumba tulukani pulogalamuyi. kuchokera kuzidutswa zina kupita kunyumba fragment. Pazofuna zanu mudzakhala mukugwira ntchito ndi zidutswa za navigation pa izi mutha kugwiritsa ntchito Tablayout yokhala ndi mawonedwe atsamba ndikupanga navigation pansi.
Kodi ndimatseka bwanji mapulogalamu omwe atsitsidwa?
Kuti muchite izi, muyenera kupitilira njira ya onBackPressed(). Nthawi zambiri, njira iyi imatsegula ntchito yapamwamba mu stack. Pakani batani lakumbuyo mukufuna kusiya ntchitoyo komanso simukufuna kuwonjezera izi pagulu la zochitikazo. Imbani kumaliza () mkati mwa njira ya onBackPressed ().
Kodi mabatani atatu omwe ali pansi pa android amatchedwa chiyani?
3-batani navigation - Dongosolo lakale la Android navigation, lomwe lili ndi mabatani a Back, Home, ndi Overview/Posachedwapa pansi.
Kodi mumayendetsa bwanji zidutswa za onBackPressed?
gulu la anthu MyActivity limakulitsa Ntchito {@Override void public onBackPressed() { Fragment fragment = getSupportFragmentManager().
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- 1 - Pangani Chiyankhulo. mawonekedwe IONBackPressed {zosangalatsa onBackPressed(): Boolean }
- 2 - Konzani zochita zanu. …
- 3 - Khazikitsani mu Chidutswa chomwe mukufuna.
Kodi mumalepheretsa bwanji kuti ntchitoyo isakwezedwe kawiri mukadina batani?
Pa batani la omvera, zimitsani batani ndikuwonetsa ntchito ina. batani b = (batani) mawonekedwe; b. setEnabled (zabodza); Cholinga i = Cholinga chatsopano (izi, AnotherActitivty. class); kuyamba Ntchito(i);