SliverAppBar (Flutter Widget of the Week) Flutter English Italian

SliverAppBar (Flutter Widget of the Week)YouTube↗ IA↗(long shot)
Science & Technology 79.1K views 3.2K likes 13 dislikes 22 Oct 2020

Flutter 631K subscribers United States YouTube↗

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♪ [music] ♪

Widget della settimana

SliverAppBar may sound like a familiar widget

SliverAppBar può sembrare un widget familiare

giving you the ability to have an app bar

che dà l'abilità di avere una app bar

that grows and shrinks as you scroll a list up and down.

che si estende e si riduce come si scorre sulla lista su e giù.

But did you know there's been some recent additions?

Ma sapete che ci sono state delle aggiunte recenti?

You can create a flexible area that expands to a given height

Si può creare un'area flessibile che si espande ad una certa altezza

using the <i>expandedHeight</i> and <i>flexibleSpace</i> properties,

usando le proprietà <i>expandedHeight</i> e <i>flexibleSpace</i>,

but what happens to the SliverAppBar

ma cosa succede alla SliverAppBar

when you reach the top of the list of slivers?

quanto si arriva alla fine della lista di sliver?

To give an app bar room to stretch,

Per dare alla barra app spazio per allungarsi,

set the <i>stretch</i> property to <i>true</i>,

metti la proprietà <i>stretch</i> come <i>true</i>,

by default the <i>FlexibleSpaceBar</i> will zoom its background.

di default la <i>FlexibleSpaceBar</i> farà zoom sul suo background.

But you can override that with the <i>stretchModes</i> property,

Ma si può sovrascrivere questo con la proprietà <i>stretchModes</i>,

maybe by explicitly zooming the background

forse explicitamente facendo zoom nel background

as well as blurring it out,

così sfocandolo,

or moving the <i>title</i> into the <i>FlexibleSpaceBar</i>

o muovendo il titolo nella<i> FlexibleSpaceBar</i>

and having it disappear with the stretch.

e facendolo sparire con la distensione.

And if you want to trigger other things to happen with the stretch,

E se si vogliono attivare altre azioni che accadano con la distensione,

like refreshing the list contents,

come aggiornare la lista di contenuti,

set an <i>onStretchTrigger</i>.

inserisci un <i>onStretchTrigger</i>.

For more on SliverAppBar and all the other widgets

Per più informazioni sulla SliverAppBar e tutti gli altri widgets

head on over to <i>flutter.dev</i>. ♪ [music] ♪

dirigetevi alla <i>flutter.dev</i>

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