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I have this code in my main.dart:
main() { runApp( MultiProvider( providers: [ ChangeNotifierProvider(builder: (context) => Auth()), // /**problem here. builder displayed with strikethrough line**/ ], child: App(), ), ); } since about 2 days ago, my visual studio code showing this warning:
so I guess builder parameter on ChangeNotifierProvider is deprecated. I searched everywhere but can't find alternative to this builder parameter. So how to remove these warning? Below is my flutter version using flutter --version command on Windows 10
> flutter --version Flutter 1.9.1+hotfix.6 • channel stable • https://github.com/flutter/flutter.git Framework • revision 68587a0916 (3 months ago) • 2019-09-13 19:46:58 -0700 Engine • revision b863200c37 Tools • Dart 2.5.0 For any help, thanks in advance
469
Now instead of the Provider class, we subscribe to this model using the ChangeNotifierProvider. The difference between the ChangeNotifierProvider and the Provider is that: The Provider takes a value and exposes it to all the widgets, but it does not listen to changes from that value.
You need to use the dispose() method of State or the default constructor of ChangeNotifierProvider . The latter automatically disposes of the object created in the create function.
According to the Flutter docs, a ChangeNotifier is 'a class that can be extended or mixed in that provides a change notification API using VoidCallback for notifications.
Creates a ChangeNotifier using create and automatically disposes it when ChangeNotifierProvider is removed from the widget tree.
Since provider version 3.2.0 "builder" is marked as deprecated in favor of "create".
More info can be found in the change log
So should do:
ChangeNotifierProvider(create: (context) => Auth()) If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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