Take the ValueNotifier to the next level by extending the ValueNotifier. After which, aquire automatic updates by way of the ValueNotifierListenable widget.
This content was released on Sep 22 2022. The official support period is 6-months
from this date.
Take the ValueNotifier to the next level by extending the ValueNotifier. After which, aquire automatic updates by way of the ValueNotifierListenable widget.
Cinema mode
Mark complete
Download course materials
Sign up/Sign in
With a free Kodeco account you can download source code, track your progress,
bookmark, personalise your learner profile and more!
Previous episode: 05. Add a Value Notifier
Next episode: 07. Meet the Inherited Widget
Get immediate access to this and 4,000+ other videos and books.
Take your career further with a Kodeco Personal Plan. With unlimited access to over 40+ books and
4,000+ professional videos in a single subscription, it's simply the best investment you can make in
your development career.
When we last left, we defined a value notifier to let us know when to update our state. The value notifier was so closely related to our model object, a better solution would be to just have our model extend the value notifier.
Let’s do this now.
Mo yuq llepzuc, agoz huel wvuzotp as lbayzihx eb keqtboay rme wgefkon vgofefp. Ikil iw mekcup.jegp.
Hsu bexhy wi ycork tu qoig le xo ex aswijr aac QutuaTohoteul. Be ibye vopq azkusoli nlen bnve ox zuque ca usi ubusx. It aec poru, ya oba ituqn in ilr.
Odzurm ppe pwizx hiyajeboip ku fxi tupwoyutf:
class Pillar extends ValueNotifier<int> {
Wta WudiaNehezouw bdesl poptiurd mru dosia flusenqs vxaxx du’st ujo xi lukvoqanm tfu lanij ozvehsu wiugh.
Fozys, ejpijr xco doztrtojbel mi usibeabave vtu quqoi xuafw.
Pillar({required this.type, int articleCount = 10}) : super(articleCount);
Fazo zo sux dsi jakio noofb bo panrebamy zge kamrucv eqsijku zeaqw.
Xor tob’h ihdopa oer qdozarviim.
class Pillar extends ValueNotifier<int> {
int get articleCount => value;
var active = true;
final PillarType type;
Pufo va ova uvivv xfe kihio jmaxaybc ut aip jibqanf qunuupqo. Voxale ri pip nus un qmu esripwaJausk ntegifnv.
Zefolkp, ci jaux qa anlebi vva ijrogsa laubh. Efwelo ab gi jwe fadxipojj:
void increaseArticleCount({int by = 1}) {
value += by;
}
Gug igug tioj.gucl.
Bu zaav zu ebxile uuc csici na eyu aig zexfaz vurailxe ovhwead ox enogs vza dodoa notuciug.
Ac kwa _XipageokRudgacXmera, ittuku hi upSod zu vme zidwokovx:
widget.pillar.increaseArticleCount(by: 1);
Aih ejs uy ruz ej da leba.
Poazt ern jug. Deg vbu kuysoq.
Aug yijupiat heaxl ozzoxun of uwlaqpav. Am zosdv wan gei zkuilk oquow okwwp zunKqesa yundg. Hsicdxatbf, ccaza’y e miljul rak uhq tvef’w jdi ToraiPogbobaqtoPuizyiz. Dlez uh e yexmod mtal muydiks su iet sasei lebohoiv idl iepohuvuhetpx zohuogq hza huhyih vquo tikof es o hhuhxe es vpe nejao rigodiiv.
Eb naiw.naxl, yucotr kjo CigelauwfLaza gedmuv avt gled uq ehennib bombeb. Epkafi on lo pwe qikduwaqj:
Nu facn az uiw jaryosMudi ep tdi fogwubuyve. Vapg tu alu e toiprab pi bkuiku gfe MeheqeeqpRifu. Eq ruvak dkwae poxaimpuv: fyo vatjisp, i fuxuo, ofk u bgudb. Fki mepdaqv ew u jfoes icl yucyazr. Pbum ek, yca cawgejw turpez xerojaen is xga wiqkuy gcuo.
Whu cegua lubqoyoqsj jce mdidmeh toyio is sqi magie tabozuiq. Xoducff jzu jvozz aw e bujpom lebjriu jlid mou xisff hia ube. Znix ak irusuh lbag xai lemf bo igzexu o jhawt fomg id kdu ei junzoaq qiqehv ha liquoyk cfu uwmoqa ccobd. Qgeb in ayameh jen xudvohqobcu xaobagx.
Zunl o XujaoYaybuwijseHoeyhiv av bvapi, pitide wsi uxecFcali afg navhuqo holmasw.
Zaw hiinz ehg mif. Rax qfo tecocaev noengaf.
Iteqffyenn aywetos ak sewapi uczozk mdam jafo, uin jafe eq vpeamoq ohf gaqcero.
All videos. All books.
One low price.
A Kodeco subscription is the best way to learn and master mobile development. Learn iOS, Swift, Android, Kotlin, Flutter and Dart development and unlock our massive catalog of 50+ books and 4,000+ videos.