mypackage1289

Description:

mypackage1289

Put a short description of the package here that helps potential users
know whether this package might be useful for them.
Tell users more about the package: where to find more information, how to
contribute to the package, how to file issues, what response they can expect
from the package authors, and more Tell users more about the package: where to find more information, how to
contribute to the package, how to file issues, what response they can expect
from the package authors, and more Tell users more about the package: where to find more information, how to
contribute to the package, how to file issues, what response they can expect
from the package authors, and more.
Features #
test Tell users more about the package: where to find more information, how to
contribute to the package, how to file issues, what response they can expect
from the package authors, and more.test Tell users more about the package: where to find more information, how to
contribute to the package, how to file issues, what response they can expect
from the package authors, and more.test Tell users more about the package: where to find more information, how to
contribute to the package, how to file issues, what response they can expect
from the package authors, and more.
Getting started #
test Tell users more about the package: where to find more information, how to
contribute to the package, how to file issues, what response they can expect
from the package authors, and more.
Usage #
test Tell users more about the package: where to find more information, how to
contribute to the package, how to file issues, what response they can expect
from the package authors, and more.test Tell users more about the package: where to find more information, how to
contribute to the package, how to file issues, what response they can expect
from the package authors, and more.test Tell users more about the package: where to find more information, how to
contribute to the package, how to file issues, what response they can expect
from the package authors, and more.
A wrapper around InheritedWidget to make them easier to use and more reusable.
By using provider instead of manually writing InheritedWidget, you get:
simplified allocation/disposal of resources
lazy-loading
a vastly reduced boilerplate over making a new class every time
devtool friendly – using Provider, the state of your application will be visible in the Flutter devtool
a common way to consume these InheritedWidgets (See Provider.of/Consumer/Selector)
increased scalability for classes with a listening mechanism that grows exponentially in complexity (such as ChangeNotifier, which is O(N) for dispatching notifications).
To read more about a provider, see its documentation.
See also:
The official Flutter state management documentation, which showcases how to use provider + ChangeNotifier
flutter architecture sample, which contains an implementation of that app using provider + ChangeNotifier
flutter_bloc and Mobx, which uses a provider in their architecture
Migration from 4.x.x to 5.0.0-nullsafety
initialData for both FutureProvider and StreamProvider is now required.
To migrate, what used to be:
FutureProvider
Widget build(BuildContext context) {
final value = context.watch
FutureProvider<int?>(
initialValue: null,
create: (context) => Future.value(42),
child: MyApp(),
)
Widget build(BuildContext context) {
// be sure to specify the ? in watch<int?>
final value = context.watch<int?>();
return Text('$value');
}
ValueListenableProvider is removed
To migrate, you can instead use Provider combined with ValueListenableBuilder:
ValueListenableBuilder
To expose a newly created object, use the default constructor of a provider. Do not use the .value constructor if you want to create an object, or you may otherwise have undesired side effects.
See this StackOverflow answer which explains why using the .value constructor to create values is undesired.
DO create a new object inside create.
Provider(
create: (_) => MyModel(),
child: ...
)
const like = 'sample';
copied to clipboard
Additional information #
test Tell users more about the package: where to find more information, how to
contribute to the package, how to file issues, what response they can expect
from the package authors, and more.
test Tell users more about the package: where to find more information, how to
contribute to the package, how to file issues, what response they can expect
from the package authors, and more.test Tell users more about the package: where to find more information, how to
contribute to the package, how to file issues, what response they can expect
from the package authors, and more.test Tell users more about the package: where to find more information, how to
contribute to the package, how to file issues, what response they can expect
from the package authors, and more.