How to upgrade flutter project dart sdk version - flutter

I have Flutter version 3.3.2 installed.
How do I upgrade flutter project dart sdk version?
Current project sdk version
sdk:">=2.7.0 3.0.0<"

You can run flutter upgrade and normally your project should pick up the most recent version of the SDK.
Refer to the documentation and to this previously asked question.

Related

Flutter project ios can't install after upgrade to latest version

I can't install pod
the project was working with flutter version: 2.10.3 after i upgrade to latest
version Channel stable, 3.3.4, now i can't install project on both IOS and android i
am getting problem. the image attached for both IOS and android problem *
As mentioned in the changelog of the package stripe_ios, the minimum deployment target of ios you can set is 12.0.
So, open your runner.plist file with Xcode and change the minimum_deployment_target to 12.0 or not recommended, but, you can downgrade the stripe_ios package to version 2.4.0 or less.

I have updated flutter sdk version to 2.10.0 but in terminal error coming saying : current version is 2.8.0

i have updated the sdk version of flutter to 2.10.0 but still old version (2.8.0) is showing in terminal due to which i am unable to use google fonts in my app as the google fonts require sdk version >=2.10.0. I Have used these two commands to upgrade - flutter upgrade and flutter pub get
Check for version file in flutter SDK. Open the flutter SDK folder and open the version file. It use to have a version specified, also check for the flutter version in VS Code at the bottom bar. If both are 2.10.0, then just flutter clean the project and rebuild. IF 2.8.0 is still there, download 2.10.0 zip file and unzip and replace the flutter SDK path.
You would check your flutter's SDK version through the below command
flutter doctor -v
Once you type above command, the system will show you about the current config

How can I upgrade the dart sdk from flutter 1.22.4 stable channel?

I am using flutter 1.22.4 stable channel for a project. In this sdk dart 2.10.0 sdk is integrated. Now i want to upgrade the dart sdk to 2.12.0. How can I do it?
Upgrade to flutter 2.0, the dart version switches to 2.12. Here is How To Upgrade Your Mobile App to Flutter 2.0+ and How to Migrate Your Mobile App to Flutter 2.0
Check out Flutter Version History | Brief Details Of Flutter Version List for more information

How to change the current Dart SDK version?

I ran the following commands in my foo project:
iDecode#iDecodes-Mac foo % pub get
Resolving dependencies...
The current Dart SDK version is 2.7.2.
Because foo requires SDK version >=2.12.0 <3.0.0, version solving failed.
iDecode#iDecodes-Mac foo % flutter --version
Flutter 2.6.0-11.0.pre • channel dev
Tools • Dart 2.15.0 (build 2.15.0-116.0.dev)
My pubspec.yaml file has:
environment:
sdk: '>=2.12.0 <3.0.0'
As you can see my current Dart SDK version is set to 2.7.2, my project is targeting a min of 2.12.0 and Dart SDK installed on my machine is 2.15.0. So, how do I change the current Dart SDK version?
This is my ~/.zshrc file
export PATH=/flutter/bin:$PATH
export PATH=$PATH:/$HOME/Library/Android/sdk/platform-tools/
export PATH="$PATH:/$HOME/flutter/bin"
export PATH="$PATH":"$HOME/.pub-cache/bin"
export JAVA_HOME=$(/usr/libexec/java_home)
It seems like you installed Flutter/Dart SDK somewhere using Homebrew. Use which flutter and which dart to see the actual Flutter/Dart command that is taking effect. Once you find where your Dart SDK is you can use
brew uninstall dart
After this when you run which dart it will now point to where your Flutter SDK was installed.
You can also try this way:
Just download that specific flutter version from here. and just set the flutter version in your editor and try to run it will run that specific flutter version but make sure you can't run that with terminal commands. So you need to handle all commands from the Tools option.
set flutter version
Must Run commands from here
The dart version is related with flutter version, see which version is what you need here
https://docs.flutter.dev/development/tools/sdk/releases
Upgrade by running flutter upgrade [check it out here] (update dart sdk for flutter)
Flutter comes with dart by default. Suggestion is to delete old flutter, delete .zshrc and download the latest stable version 2.5.3 for your mac and then give path for it in your .zshrc. Other method is switch to flutter stable by running flutter channel stable and then give flutter upgrade command so it will catch all the stuff from git in you local machine and you'll be good to go.
Simply go to the location where Dart SDK is kept and delete that and install a new Dart SDK version from the official website which is
https://dart.dev/get-dart
I had that same issue
Resolving dependencies... (5.3s)
The current Dart SDK version is 2.17.0.
Because talk_to_me depends on browser >=0.3.1+1 which requires SDK version
<2.0.0, version solving failed
I think we need to uninstall dart and install the correct version
To uninstall dart:
sudo apt purge dart

Using Null-Safety in new flutter projects only?

Currently I'm in Dart SDK version 2.10.4 (stable) and flutter 1.22.5 in my old projects. But now for my new projects, I want to use 2.12.0 version that has null-safety. My question is how to upgrade my dart sdk. And if I updated my sdk version, will it affects my old projects? Is it possible to only use dart 2.12.0 sdk version to my new projects?
First, check the dependency status where it checks whether dependencies inside the project are migrated to it.
Get the migration state of your package’s dependencies, using the following command:
dart pub outdated --mode=null-safety
it should give output
The latest column should be in green, if not then upgrade the dependencies of libs and check whether they support it to not.
Finally, Run the below command for migration
dart migrate
You can specify dart and flutter versions constraints in you pubspec.yaml for each project:
environment:
sdk: '>=2.12.0 <3.0.0'
flutter: '>=2.0.0'
So answer is yes, you can use new version of sdk with null safety in new projects and don't use it in your old projects. Just specify older version in pubspec for old projects.
In addition I advise you to migrate your old projects to null safety as soon as all of dependencies you used are migrated. Use this guide for it.