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Code Issues Releases Wiki Activity

Upgrade provider shopper (#521)

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This commit is contained in:
Filip Hracek
2020-08-13 18:02:04 -07:00
committed by GitHub
parent 8767dadff0
commit c617da7e1e
6 changed files with 101 additions and 50 deletions
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11
provider_shopper/lib/screens/cart.dart
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@@ -37,7 +37,10 @@ class _CartList extends StatelessWidget {
@override
Widget build(BuildContext context) {
var itemNameStyle = Theme.of(context).textTheme.headline6;
var cart = Provider.of<CartModel>(context);
// This gets the current state of CartModel and also tells Flutter
// to rebuild this widget when CartModel notifies listeners (in other words,
// when it changes).
var cart = context.watch<CartModel>();
return ListView.builder(
itemCount: cart.items.length,
@@ -64,6 +67,12 @@ class _CartTotal extends StatelessWidget {
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
// Another way to listen to a model's change is to include
// the Consumer widget. This widget will automatically listen
// to CartModel and rerun its builder on every change.
//
// The important thing is that it will not rebuild
// the rest of the widgets in this build method.
Consumer<CartModel>(
builder: (context, cart, child) =>
Text('\$${cart.totalPrice}', style: hugeStyle)),