Due to min v1.5 sdk plugin needs, I use flutter upgrade, but since I can't use command ... I have bash command not found,
I tried manually download 1.5 sdk and replace previous folder, when I use flutter doctor He say I have 1.2.1 ... I tried to re-upgrade but I have this error :
Your flutter checkout has local changes that would be erased by upgrading. If you want to keep these changes, it is
recommended that you stash them via "git stash" or else commit the changes to a local branch. If it is okay to remove
local changes, then re-run this command with --force.
C:\Users\utilisateur>flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, v1.2.1, on Microsoft Windows [version 10.0.17134.829], locale fr-FR)
[√] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
[√] Android Studio (version 3.3)
[!] VS Code, 64-bit edition (version 1.21.1)
X Flutter extension not installed; install from
https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter
[√] Connected device (1 available)
! Doctor found issues in 1 category.
I tried git clean -xfd
i have ...
C:\Users\utilisateur>git clean -xfd
Unlink of file '.AndroidStudio3.3/config/plugins/Dart/lib/Dart.jar' failed. Should I try again?
(y/n) Sorry, I did not understand your answer. Please type 'y' or 'n'
Unlink of file '.AndroidStudio3.3/config/plugins/Dart/lib/Dart.jar' failed. Should I try again? (y/ngit stash save --keep-index
) Sorry, I did not understand your answer. Please type 'y' or 'n'
Unlink of file '.AndroidStudio3.3/config/plugins/Dart/lib/Dart.jar' failed. Should I try againgit stash save --keep-index
? (y/n) Sorry, I did not understand your answer. Please type 'y' or 'n'
Unlink of file '.AndroidStudio3.3/config/plugins/Dart/lib/Dart.jar' failed. Should I try again? git stash save --keep-index
(y/n) Sorry, I did not understand your answer. Please type 'y' or 'n'
Unlink of file '.AndroidStudio3.3/config/plugins/Dart/lib/Dart.jar' failed. Should I try again? (y/n)
In my case Flutter had unstaged changes (since it uses git), so I needed to stash or reset it to be able to upgrade it.
Go to flutter's path and:
# cd flutter_path/
git add -A
git reset --hard
Alternatively, you can use --force to upgrade it anyway.
flutter upgrade --force
Open your Terminal in Android Studio or CMD and Paste it
flutter upgrade --force
To make things simple can you extract the flutter sdk into folder 'c:\Flutter' Then set the path
Windows | iOS
Delete the old Flutter SDK folder you created. Then follow the steps illustrated here to point Android Studio to the new Flutter SDK installation.
I encountered the same problem. This probably occurred because I have my flutter SDK installed in the E:\ directory rather than default C:\ directory.
This is how I solved it,
1: Check where your Flutter Sdk is present. You can do this by creating a "New project->Flutter->Flutter Sdk" (This works if you have the flutter Sdk installed and configured, If you don't have it installed you can click on install Sdk option in the same "new Project->Flutter" window).
2: Then open Terminal by going to bottom right corner of you IDE and then clicking on terminal.
3: Change your directory to the flutter sdk's bin location by Typing "cd _yourSdkLocation\bin". Here replace "_yourSdkLocation" with the directory address where your flutter Sdk is present.
4: Then run "flutter upgrade --force"
In Terminal, use command
source .bash_profile
and then run ,
flutter upgrade --force
To remove changes in flutter directory, It will upgrade to recent flutter version
Press Windows+R to open the Run window.
Type cmd into the box.
Press Ctrl+Shift+Enter.
C:\>choco upgrade dart-sdk
Note: Make sure you open cmd with Admin permission
Related
I upgraded my Flutter SDK and now my project is broken. I need to basically revert back to a Flutter SDK which uses Dart 1.x.
I tried the following in the pubspec.yaml,
environment:
sdk: ">=1.19.0 <2.0.0"
flutter: "^0.1.2"
dependencies:
flutter:
sdk: flutter
but now the project just simply doesn't build.
Running "flutter packages get" in binformed...
Package binformed requires Flutter SDK version ^0.1.2 but the current SDK is 0.2.5-pre.38.
pub get failed (1)
Do i need to uninstall the SDK and reinstall it?
Flutter is versioned using git. Changing the Flutter version is as simple as changing git branch.
There are 2 different ways:
flutter channel <branch> (example: flutter channel stable)
This command is used to change between branches – usually stable/dev/beta/master.
We can also put a specific commit id from git.
flutter downgrade <version> (example: flutter downgrade v1.2.1)
This command will use a specific version number.
You can have the list of the available version numbers using flutter downgrade or here
After this, run any Flutter command (such as flutter doctor), and Flutter will take care of downloading/compiling everything required to run this version.
Run the following command to see a list of available versions.
flutter version
Then choose a version you want to switch to by running
flutter version v1.2.1
To undo and revert back to stable
flutter channel stable
flutter upgrade
In the Flutter install directory execute
git checkout v0.1.9
then run
flutter doctor
You can check which versions are available in the Flutter GitHub repository https://github.com/flutter/flutter
There is an open feature request to make this easier https://github.com/flutter/flutter/issues/14230
Don't use flutter version vX.X.X, use flutter downgrade instead.
Warning: "flutter version" will leave the SDK in a detached HEAD state. If you are using the command to return to a previously installed SDK version consider using the "flutter downgrade" command instead.
So, you should use
flutter downgrade
Edit:
If there had been no previous versions installed, the above command would fail. So, if you have a specific version of Flutter that you’d like to switch to, you can use the flutter version command:
flutter downgrade v1.17.0
You can find list of versions here
To downgrade there are many deprecated commands.
The two that actually work, and I've tested them, are:
flutter downgrade v[flutter build version]
For instance:
flutter downgrade v1.22.6
And the other one: go to your flutter sdk folder, that is your folder named "flutter" and inside it open a new terminal. Then type:
git checkout [flutter build version]
For instance:
git checkout 1.22.3
Then do flutter doctor and you'll confirm you switched correctly.
You can check the versions on: https://flutter.dev/docs/development/tools/sdk/releases?tab=macos
And for details at: https://flutter.dev/docs/release/breaking-changes
If you happen to want to switch channel, just do:
flutter channel [channel]
For instance (choose one of master, stable, dev, beta):
flutter channel stable
And if you want to upgrade again:
flutter upgrade
Inorder for a proper downgrade to any version.
Change to Dev mode
flutter channel dev
flutter downgrade v(type your version number) eg below.
flutter downgrade v2.0.6
This worked for me !
Go to the terminal and type the specific version number, for eg -
flutter downgrade v1.22.3
Then just press enter.
After fetching the files from the internet, it will ask,
Downgrade flutter to version 1.22.5
? [y|n]:
Type y and it will downgrade to the specific version.
Restart the IDE for the settings to take place.
To solve these errors:
$ flutter version
Could not find a command named "version".
$ flutter downgrade v1.22.6
There is no previously recorded version for channel "stable".
Delete old flutter folder
Download the archive and unzip instead of deleted flutter folder
OR
cd "$(dirname $(which flutter))" then
git checkout . (optional)
git pull origin (optional)
git checkout v1.22.6
flutter doctor
p.s.
Don't forget to restart your android studio
At the moment, the easiest way to manage flutter versions is through fvm.
Install fvm
brew tap leoafarias/fvm
brew install fvm
Install your version
fvm install x.x.x
Install your version globally (if desired)
fvm global x.x.x
Here's a link to the app guide
https://fvm.app/docs/getting_started/installation
Just use flutter downgrade v2.8.0
then flutter ask for confirmation
Downgrade flutter to version 1.22.5
? [y|n]:
Type y for Yes to confirm changes
Download Flutter SDK release: flutter_windows_1.17.0-stable: https://flutter.dev/docs/development/tools/sdk/releases
Replace the existing Flutter folder to this version
Make sure that environment variables and Flutter + Dart Settings on your IDE
are still tied to this folder/path
Just flutter downgrade is enough, it will downgrade to previous stable version.
I find it a little tough to switch (upgrade/downgrade) to a specific Flutter version from the command line. Some of the answers here are outdated.
I prefer to download the SDKs for different versions from here manually.
Let's say I download 2.0.1, 2.0.5 and 2.0.6.
2.0.1 is the current Flutter SDK version for me.
To switch to 2.0.5, delete the current Flutter SDK (the one with the blue icon) and unzip flutter_macos_2.0.5-stable.zip. Then run flutter clean followed by flutter doctor to confirm that everything worked correctly.
This has the benefit of not having to change any paths or having to re-download the entire SDK every time you want to switch.
On macOS, if you get system warnings for not being able to run dart or gentool, then press Allow anyway under System Preferences > Security & Privacy
The simplest way to change your flutter version is to:
Navigate to this link and download the flutter version you want.
Extract the files and replace your older flutter directory with them.
If you were using flutter already then no need to redefine the PATH, else, make sure that environment variables are still tied to this folder/path.
Run flutter --version or flutter doctor to check that everything went ok.
I found 2-steps easy solution to migrate to any specific version of Flutter.
Navigate to Flutter repo path (Yes, the one we download from official website and unzipped it) in a terminal
Run the following command : git checkout 2.10.5 && flutter precache
Note: Verify & change the Flutter version from here
Open Terminal and Navigate to Flutter folder
Run the following command with the Flutter version you want to switch to:
git checkout 2.10.5 && flutter precache
Reference: https://github.com/flutter/flutter/issues/64238#issuecomment-678605514
All the answers are outdated and not working after the release of flutter 3.0.
My solution is somewhat complicated but will still work in May 2022 and after.
I will show you how to downgrade from flutter 3 to Flutter 1.22.6.
the first step is to locate where you have to install flutter files when you have installed them for the 1st time. Like mine is located in c:\src\flutter.
Cut the flutter folder and paste it somewhere. (note:- you have shutdown your android studio/vs code if running)
go to Flutter SDK releases and download the desired flutter version you want. I choose flutter 1.22.6 for windows.
now extract the downloaded flutter zip and paste in c:\src\flutter (or wherever your flutter was installed previously). (don't worry if you're thinking that your Environment Variables path will change, so that is not true, it will still work. you don't have to change anything in Environment variables)
After pasting the flutter extracted folder open android studio and go to File/Setting/language and framework/flutter and correct the Flutter SDK path to C:\src\flutter.(as shown in the image).
6. Now press apply and run flutter --version
if you are using brew (macos)
you can create rb file and use brew to install or downgrade flutter
create file with name flutter.rb
cask "flutter" do
version "2.2.0"
url "https://storage.googleapis.com/flutter_infra_release/releases/stable/macos/flutter_macos_#{version}-st$
verified: "storage.googleapis.com/flutter_infra_release/"
name "Flutter SDK"
desc "UI toolkit for building applications for mobile, web and desktop"
homepage "https://flutter.dev/"
livecheck do
url "https://storage.googleapis.com/flutter_infra_release/releases/releases_macos.json"
regex(%r{/flutter[._-]macos[._-]v?(\d+(?:\.\d+)+)[._-]stable\.zip}i)
end
auto_updates true
binary "flutter/bin/dart"
binary "flutter/bin/flutter"
end
then use brew install ./flutter.rb to install flutter or downgrade flutter version
This solutions works in 2021
Go to your flutter SDK folder, which is your folder named "flutter" and inside it open a new terminal. Then type:
git checkout (your flutter version)
then,
run flutter doctor
After this check your version.
To downgrade your flutter version:
Run flutter downgrade v2.5.3 or whatever flutter version you want from here.
If it resulted in any error like
There is no previously recorded version for channel "stable".
or that there is no previous version,
then, make sure to switch to the correct branch {stable, master, dev, beta} using the following command:
flutter channel master
Finally, Run flutter doctor to check that everthing went well.
These are the flowing step to downgrade any flutter version:
Step 1:
cd [your flutter sdk path]
Step 2:
git checkout [ enter your version ref ]
To get ref goto the url and copy your desired version ref.
https://docs.flutter.dev/development/tools/sdk/releases
Suppose I downgrade version 3.3.2
Step 3:
flutter doctor or flutter --version
Downgrade to a specific version on stable channel
Locate flutter path:
whereis flutter
On flutter folder execute
# clean the repo
git clean -fdx
git reset --hard
git fetch --all --prune
# list available tags starting with 2.10
git tag | grep 2.10
# checkout to stable on tag
git checkout stable
git reset --hard 2.10.5
Finally download the flutter tools
flutter doctor
The easiest way is to go to your flutter sdk, if you're on Linux open terminal and run flutter sdk-path then cd to the sdk path.
run git checkout <ref_of_sdk_you_want>. access the sdk versions here. after the switch, run flutter doctor and restart your IDE, that's it.
You can switch between versions using this way.
Steps to change the Flutter version is as simple as changing the git branch.
flutter channel <branch> (example: flutter channel stable)
This command is used to change between branches – usually stable/dev/beta/master. We can also put a specific commit id from git.
flutter downgrade <version> (example: flutter downgrade v1.2.1)
This command will use a specific version number. You can have the list of the available version numbers using flutter downgrade
After this, run any Flutter command (such as flutter doctor), and Flutter will take care of downloading/compiling everything required to run this version.
I just updated Flutter plugin to 53.0.1, restarted Android Studio and hit "run" button and the error below show up:
Could not find an option named "devtools-server-address".
Close and reopen AndroidStudio resolved for me!
killall java
I downgraded from Flutter 2.0 to Flutter 1.22.5 and got this error.
To solve it,
Go to your terminal and write flutter channel stable.
Then run flutter doctor.
Now you may get another error like this -
If you have Flutter & Dart plugins already install, just ignore this error. This is a bug in Flutter 1.22.5 .
Just run the app and it will work fine!
I had the same issue but using VS Code on stable channel
Execute the following commands:
flutter channel stable
flutter upgrade
flutter clean
flutter pub get
Then, close and open your IDE
Follow the steps:
File -> Invalidate Cache and Restart. Run flutter clean Worked For me.
This so simple... Open terminal type flutter channel dev this solve your problem.
And after that flutter upgrade
Finally, flutter doctor
If it does not help:
Open terminal type flutter channel stable
And after that flutter upgrade
Finally, flutter doctor
Working without upgrading flutter
Safe fix for Mac (Android Studio 4.1+). It is in a different directory now, but the symbolic link helps.
Just run this command in the Terminal:
ln -s ~/Library/Application\ Support/Google/AndroidStudio4.1/plugins ~/Library/Application\ Support/AndroidStudio4.1
Change the version of the Android studio depending on what you have, I had 4.2 so used.
ln -s ~/Library/Application\ Support/Google/AndroidStudio4.2/plugins ~/Library/Application\ Support/AndroidStudio4.2
Just Invalidate Cache and Restart. Worked for me.
Just close your all project and also close Android Studio and Reopen.
Here is my Flutter doctor summary:
Running flutter doctor...
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel master, v1.10.13-pre.12, on Microsoft Windows [Version 10.0.17134.1006], locale en-IN)
[!] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
X Android license status unknown.
Try re-installing or updating your Android SDK Manager.
See https://developer.android.com/studio/#downloads or visit https://flutter.dev/setup/#android-setup for detailed instructions.
[√] Android Studio (version 3.5)
[√] Connected device (1 available)
! Doctor found issues in 1 category.
C:\Users\user>
I have already updated My SDK manager to the latest version
My SDK version is 29.0.2
How can I resolve this error... This error appears even after updating SDK manager
Screenshot of SDK Location:
It works for me, Here are the steps that solve my problem:
STEP 1:ANDROID LICENSES --android-licenses, will resolve most cases
Since you are here you have reached "Android License Status Unknown" issue for Android tool chain, as many suggested try flutter doctor --android-licenses. If you are good with all the config. It should ask for an yes and press y and Voila. But if it shows:
Android sdkmanager tool not found (C\Users\__\local\Android\sdk\tools\bin\sdkmanager). Go to step two
STEP 2: SDK Manager installation from Android Studio
Open your Android Studio , File-> settings->System settings(left tab) ->Android SDK, go to SDK Tool section in that page, untick hide obsolete packages, select Android SDL tools(obsolete) and press apply.
It will install the SDK and you confirm it by going and checking if this path exists(C\Users\__\local\Android\sdk\tools\bin\sdkmanager)
STEP 3: Repeat 1
Repeat step 1 after installation in a new command line check if its working , else go to STEP 4
STEP 4: sdkmanager --update
It will ask you update the sdk, just run the command given in terminal
C\Users\__\local\Android\sdk\tools\bin\sdkmanager --update.
If it is running, then its cool. let it finish and repeat step 1, else if it is throwing some exceptions like java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema etc,
It means your java is not installed or not the correct version. Go to next step
STEP 5: JAVA 8.1 and JAVA_HOME path.
Install JAVA 8.1 and set JAVA_HOME path. Make sure it is version 8.1(register free account and download from oracle the 8.1 version, remember above 11+ wont work for Flutter
NOTE: by yaniv maymon: if you already have Java installed on your computer and the sdkmanager --update still not working. go the environment variable and update the "JAVA_HOME" path to jdk folder. then exit the command prompt, open it again and run the update command –
STEP 6: Final Step
After installing and setting up path properly, run the C\Users\__\local\Android\sdk\tools\bin\sdkmanager --update command in new terminal and it will work
STEP 7: Rerun flutter doctor, You can see it saying to run the command flutter doctor --android-licenses . so run flutter doctor --android-licenses in terminal and press y when asked
Resources
It could be that your path is not set correctly? Have you looked in Settings>Appearance and Behavior>System Settings>Android SDK>Android SDK Location?
I had the same problem and solve it installing the latest java version Java 8. Then setting JAVA_HOME Variable. In Windows: Environment Variables> System Variables> add a new or edit your JAVA_HOME> in the Variable Value field, enter your JDK or JRE installation path the JAVA_HOME. After this, the command flutter doctor --android-licenses worked.
According to this issue in the flutter repository it seems like you have not accepted all the SDK license agreements.
You can resolve it by running
flutter doctor --android-licenses
in you terminal and accepting the outstanding licenses by pressing y and return.
I had the same problem
You can resolve this issue by running this command
flutter doctor --android-licenses
into your flutter_console.bat
Or
uninstall the android studio and reinstall it, it will fix the issue.
Add env variable ANDROID_SDK_ROOT as the path where the sdk was installed to.
This solved the problem for me:
open Android Studio and open SDK Manager then SDK Tools tab. check
the box "Android SDK Command-line Tools
Open the command prompt and type flutter doctor --android-licenses then press enter
It is going to ask you to type 'Y' for each license. type 'y' until all the licenses are done.
now check with flutter doctor again in the command prompt and it should tell you that license is accepted.
What worked for me was to delete the Android 30 file in the following directory:
C:\Users\user\AppData\Local\Android\Sdk\platform
After that, I went to File > Settings > System Settings > SDK platforms.
Then I checked the Android 11.0® option, and finally clicked Apply.
Installing Android SDK command line tools in SDKs tools on Android studio worked for me
Open Android Studio and open SDK Manager then SDK Tools tab.
Check the box Android SDK Command-line Tools
After installing Android SDK command line tools in the tools SDKs of Android Studio, execute the command flutter doctor --android-licenses
I'm extremely frustrated right now after I updated Android Studio to have the latest Flutter and Dart Plugins. Now it tells me "No FLutter SDK configured" and when I give it the SKD path it just says, "Flutter SDK Is Not Found In The Specified Location." The Dart plugin works fine.
I have looked for an answer for hours and nothing works. I've downloaded the NDK, flutter doctor works perfectly, and I've tried set the SDK path to pretty much every file inside my flutter folder (inside /Documents).
Any tips?
Go to - Configure -> Tools > SDK Manager > Android SDK > SDK Tools, and search for flutter. You will get flutter SDK for Android.
If you are using Visual studio, also install plugins for flutter in Visual Studio.
» Steps:
Download Flutter SDK: Here
Extract Flutter:
tar xf ~/Downloads/flutter_linux_v1.7.8+hotfix.4-stable.tar.xz
Path export for particular terminal:
export PATH="$PATH:`pwd`/flutter/bin"
Permanent Path export:
Open bashrc file: Go to home directory terminal -> nano ~/.bashrc
Write at end of file:
export PATH=" [PATH_Where_Flutter SDK Extracted] /flutter/bin:$PATH"
example: export PATH="/home/sid/0_aaa_iauro/Flutter/s/flutter/bin:$PATH"
Run the following command to see if there are any dependencies you need to
install to complete setup:
flutter doctor -v
Add Flutter extension to vs-code.
Locate Flutter SDK.
Make New project in flutter:
flutter create Project_name
» Important Links:
Linux Install
Getting Started with Flutter on Linux for Android [Beginner Tutorial]
How To Install And Setup Flutter On Ubuntu 18.04.1 LTS (Bionic Beaver)
Part 2-A: Install Flutter in Windows – Step by Step Guide
Check for path variable (bashrc file):
Flutter – Step by Step Installation on Linux – Ubuntu
If you are using a fresh new Android Studio install as me, try installing missing packages for SDK support in Android Studio as described here: https://ladwhocodes.blogspot.com/2019/02/fix-flutter-sdk-not-found-in-specified-location.html
Go to Menu > Tools > SDK Manager > Android SDK (left side of the dialog) > SDK Tools (tab).
Select 'Support Repository' and 'NDK' checkboxes.
Click OK.
It will prompt you to install some dependencies. Install them.
What happen to me was because there is a space in my android sdk path (which is my username). I copy to C:\android\sdk and problem gone. Probably the space cause issue to NDK thus affect to Flutter sdk.
in my case, it was caused by local changes to the flutter git repo. On command line, everything worked, but in Android Studio it failed to detected the flutter sdk which caused all flutter commands to fail (even though flutter bin dir is in my path). The local changes were probably caused by trying out the beta version of flutter and returning to stable afterwards.
solution: delete flutter dir and redownload (I actually reverted all changes using the git clean command)
I upgraded my Flutter SDK and now my project is broken. I need to basically revert back to a Flutter SDK which uses Dart 1.x.
I tried the following in the pubspec.yaml,
environment:
sdk: ">=1.19.0 <2.0.0"
flutter: "^0.1.2"
dependencies:
flutter:
sdk: flutter
but now the project just simply doesn't build.
Running "flutter packages get" in binformed...
Package binformed requires Flutter SDK version ^0.1.2 but the current SDK is 0.2.5-pre.38.
pub get failed (1)
Do i need to uninstall the SDK and reinstall it?
Flutter is versioned using git. Changing the Flutter version is as simple as changing git branch.
There are 2 different ways:
flutter channel <branch> (example: flutter channel stable)
This command is used to change between branches – usually stable/dev/beta/master.
We can also put a specific commit id from git.
flutter downgrade <version> (example: flutter downgrade v1.2.1)
This command will use a specific version number.
You can have the list of the available version numbers using flutter downgrade or here
After this, run any Flutter command (such as flutter doctor), and Flutter will take care of downloading/compiling everything required to run this version.
Run the following command to see a list of available versions.
flutter version
Then choose a version you want to switch to by running
flutter version v1.2.1
To undo and revert back to stable
flutter channel stable
flutter upgrade
In the Flutter install directory execute
git checkout v0.1.9
then run
flutter doctor
You can check which versions are available in the Flutter GitHub repository https://github.com/flutter/flutter
There is an open feature request to make this easier https://github.com/flutter/flutter/issues/14230
Don't use flutter version vX.X.X, use flutter downgrade instead.
Warning: "flutter version" will leave the SDK in a detached HEAD state. If you are using the command to return to a previously installed SDK version consider using the "flutter downgrade" command instead.
So, you should use
flutter downgrade
Edit:
If there had been no previous versions installed, the above command would fail. So, if you have a specific version of Flutter that you’d like to switch to, you can use the flutter version command:
flutter downgrade v1.17.0
You can find list of versions here
To downgrade there are many deprecated commands.
The two that actually work, and I've tested them, are:
flutter downgrade v[flutter build version]
For instance:
flutter downgrade v1.22.6
And the other one: go to your flutter sdk folder, that is your folder named "flutter" and inside it open a new terminal. Then type:
git checkout [flutter build version]
For instance:
git checkout 1.22.3
Then do flutter doctor and you'll confirm you switched correctly.
You can check the versions on: https://flutter.dev/docs/development/tools/sdk/releases?tab=macos
And for details at: https://flutter.dev/docs/release/breaking-changes
If you happen to want to switch channel, just do:
flutter channel [channel]
For instance (choose one of master, stable, dev, beta):
flutter channel stable
And if you want to upgrade again:
flutter upgrade
Inorder for a proper downgrade to any version.
Change to Dev mode
flutter channel dev
flutter downgrade v(type your version number) eg below.
flutter downgrade v2.0.6
This worked for me !
Go to the terminal and type the specific version number, for eg -
flutter downgrade v1.22.3
Then just press enter.
After fetching the files from the internet, it will ask,
Downgrade flutter to version 1.22.5
? [y|n]:
Type y and it will downgrade to the specific version.
Restart the IDE for the settings to take place.
To solve these errors:
$ flutter version
Could not find a command named "version".
$ flutter downgrade v1.22.6
There is no previously recorded version for channel "stable".
Delete old flutter folder
Download the archive and unzip instead of deleted flutter folder
OR
cd "$(dirname $(which flutter))" then
git checkout . (optional)
git pull origin (optional)
git checkout v1.22.6
flutter doctor
p.s.
Don't forget to restart your android studio
At the moment, the easiest way to manage flutter versions is through fvm.
Install fvm
brew tap leoafarias/fvm
brew install fvm
Install your version
fvm install x.x.x
Install your version globally (if desired)
fvm global x.x.x
Here's a link to the app guide
https://fvm.app/docs/getting_started/installation
Just use flutter downgrade v2.8.0
then flutter ask for confirmation
Downgrade flutter to version 1.22.5
? [y|n]:
Type y for Yes to confirm changes
Download Flutter SDK release: flutter_windows_1.17.0-stable: https://flutter.dev/docs/development/tools/sdk/releases
Replace the existing Flutter folder to this version
Make sure that environment variables and Flutter + Dart Settings on your IDE
are still tied to this folder/path
Just flutter downgrade is enough, it will downgrade to previous stable version.
I find it a little tough to switch (upgrade/downgrade) to a specific Flutter version from the command line. Some of the answers here are outdated.
I prefer to download the SDKs for different versions from here manually.
Let's say I download 2.0.1, 2.0.5 and 2.0.6.
2.0.1 is the current Flutter SDK version for me.
To switch to 2.0.5, delete the current Flutter SDK (the one with the blue icon) and unzip flutter_macos_2.0.5-stable.zip. Then run flutter clean followed by flutter doctor to confirm that everything worked correctly.
This has the benefit of not having to change any paths or having to re-download the entire SDK every time you want to switch.
On macOS, if you get system warnings for not being able to run dart or gentool, then press Allow anyway under System Preferences > Security & Privacy
The simplest way to change your flutter version is to:
Navigate to this link and download the flutter version you want.
Extract the files and replace your older flutter directory with them.
If you were using flutter already then no need to redefine the PATH, else, make sure that environment variables are still tied to this folder/path.
Run flutter --version or flutter doctor to check that everything went ok.
I found 2-steps easy solution to migrate to any specific version of Flutter.
Navigate to Flutter repo path (Yes, the one we download from official website and unzipped it) in a terminal
Run the following command : git checkout 2.10.5 && flutter precache
Note: Verify & change the Flutter version from here
Open Terminal and Navigate to Flutter folder
Run the following command with the Flutter version you want to switch to:
git checkout 2.10.5 && flutter precache
Reference: https://github.com/flutter/flutter/issues/64238#issuecomment-678605514
All the answers are outdated and not working after the release of flutter 3.0.
My solution is somewhat complicated but will still work in May 2022 and after.
I will show you how to downgrade from flutter 3 to Flutter 1.22.6.
the first step is to locate where you have to install flutter files when you have installed them for the 1st time. Like mine is located in c:\src\flutter.
Cut the flutter folder and paste it somewhere. (note:- you have shutdown your android studio/vs code if running)
go to Flutter SDK releases and download the desired flutter version you want. I choose flutter 1.22.6 for windows.
now extract the downloaded flutter zip and paste in c:\src\flutter (or wherever your flutter was installed previously). (don't worry if you're thinking that your Environment Variables path will change, so that is not true, it will still work. you don't have to change anything in Environment variables)
After pasting the flutter extracted folder open android studio and go to File/Setting/language and framework/flutter and correct the Flutter SDK path to C:\src\flutter.(as shown in the image).
6. Now press apply and run flutter --version
if you are using brew (macos)
you can create rb file and use brew to install or downgrade flutter
create file with name flutter.rb
cask "flutter" do
version "2.2.0"
url "https://storage.googleapis.com/flutter_infra_release/releases/stable/macos/flutter_macos_#{version}-st$
verified: "storage.googleapis.com/flutter_infra_release/"
name "Flutter SDK"
desc "UI toolkit for building applications for mobile, web and desktop"
homepage "https://flutter.dev/"
livecheck do
url "https://storage.googleapis.com/flutter_infra_release/releases/releases_macos.json"
regex(%r{/flutter[._-]macos[._-]v?(\d+(?:\.\d+)+)[._-]stable\.zip}i)
end
auto_updates true
binary "flutter/bin/dart"
binary "flutter/bin/flutter"
end
then use brew install ./flutter.rb to install flutter or downgrade flutter version
This solutions works in 2021
Go to your flutter SDK folder, which is your folder named "flutter" and inside it open a new terminal. Then type:
git checkout (your flutter version)
then,
run flutter doctor
After this check your version.
To downgrade your flutter version:
Run flutter downgrade v2.5.3 or whatever flutter version you want from here.
If it resulted in any error like
There is no previously recorded version for channel "stable".
or that there is no previous version,
then, make sure to switch to the correct branch {stable, master, dev, beta} using the following command:
flutter channel master
Finally, Run flutter doctor to check that everthing went well.
These are the flowing step to downgrade any flutter version:
Step 1:
cd [your flutter sdk path]
Step 2:
git checkout [ enter your version ref ]
To get ref goto the url and copy your desired version ref.
https://docs.flutter.dev/development/tools/sdk/releases
Suppose I downgrade version 3.3.2
Step 3:
flutter doctor or flutter --version
Downgrade to a specific version on stable channel
Locate flutter path:
whereis flutter
On flutter folder execute
# clean the repo
git clean -fdx
git reset --hard
git fetch --all --prune
# list available tags starting with 2.10
git tag | grep 2.10
# checkout to stable on tag
git checkout stable
git reset --hard 2.10.5
Finally download the flutter tools
flutter doctor
The easiest way is to go to your flutter sdk, if you're on Linux open terminal and run flutter sdk-path then cd to the sdk path.
run git checkout <ref_of_sdk_you_want>. access the sdk versions here. after the switch, run flutter doctor and restart your IDE, that's it.
You can switch between versions using this way.
Steps to change the Flutter version is as simple as changing the git branch.
flutter channel <branch> (example: flutter channel stable)
This command is used to change between branches – usually stable/dev/beta/master. We can also put a specific commit id from git.
flutter downgrade <version> (example: flutter downgrade v1.2.1)
This command will use a specific version number. You can have the list of the available version numbers using flutter downgrade
After this, run any Flutter command (such as flutter doctor), and Flutter will take care of downloading/compiling everything required to run this version.