No matter which Flutter release channel you use, you can use flutter commands to update the packages that the Flutter SDK and app depend on.
1. One-time setup
In order for the flutter command to work correctly, the pubspec.yaml files under your project must require the Flutter SDK.
For example, the following code section defines flutter and flutter_test packages dependent Flutter SDK:
name: hello_world
dependencies:
flutter:
sdk: flutter
dev_dependencies:
flutter_test:
sdk: flutter
caution
Do not use the
pub get
or
pub upgrade
command to manage the dependencies of Flutter apps, but use
flutter pub get
or
flutter pub upgrade
. If you want to use pub manually, you can
FLUTTER_ROOT
run it directly by setting environment variables.
2. Upgrade Flutter SDK and packages
In order to upgrade the Flutter SDK and packages that your app depends on, execute the
flutter upgrade
command in the app root directory (the
pubspec.yaml
same as the directory containing the files):
This command first gets the latest Flutter SDK version available on your Flutter channel. Then this command updates every package your app depends on to the latest compatible version.
If you want to use a newer Flutter SDK version, switch to the unstable Flutter channel and run it
flutter upgrade
.
3. Switch Flutter release channel
Flutter has 4 release channels, namely stable, beta, dev, and master. We recommend using the stable channel unless you need a newer version.
To see which channel you are currently using, use the following command:
To switch to another channel, use
flutter channel <channel-name>
. After you switch channels, use to
flutter upgrade
download the Flutter SDK and dependent packages. E.g:
Memo
If you need a specific Flutter SDK version, you can download it from the Flutter SDK archive page.
4. Update packages only
If you have modified the
pubspec.yaml
file, or you want to update only the packages that your app depends on (instead of updating the packages and the Flutter SDK at the same time), use
flutter pub
one of the commands.
In order to get
pubspec.yaml
all the dependencies listed in the file, but exclude unnecessary updates, use the
get
command:
In order to update
pubspec.yaml
all dependencies listed in the file to the latest compatible version, use the
upgrade
command:
5. Get the latest notifications
We will post announcements of major changes on the Flutter announcements mailing list. You can also ask questions on the Flutter dev mailing list! In addition to subscribing to receive announcements, we would be happy to hear from you!
link:
https://groups.google.com/forum/#!forum/flutter-dev
6. Select a specific version
If you want to switch to a specific version of Flutter, you can use the
flutter version
command:
To force the use of a certain version of the package, please
pubspec.yaml
indicate its version in the file.
We will notify the latest breaking changes (major changes) to the Flutter notification mail group. At the same time, you can ask you questions in the Flutter developer mail group. We hope to get your feedback!
Flutter notification mail group:
https://groups.google.com/forum/#!forum/flutter-announce
Flutter Developer Mail Group:
https://groups.google.com/forum/#!forum/flutter-dev