I am using Android Studio as SDK Platforms and SDK Tools. Currently, I have a problem when running the android emulator using Visual Studio. I have checked flutter doctor and no issues has been found. However, it shows an error as below.
As i run flutter run --verbose to search for the problems, it shows more details of the error as below
Just for sharing. Since I installed android studio, visual studio and flutter in my device using windows 11 pro, it doesn't work. However, I solved this problem by downgrading the Windows version into Windows 10 Home and it solved this particular problem. Anyone who face the same issue might try this in your current device.
This look like gradle compatibility issue.
Step to solve.
create new flutter project. try to compile the prject, if it work fine.
compare the android folder with yours and replace what is missing with the new flutter project you created.
sync your project after.
file/invalidateCache
flutter clean
flutter pub get
flutter run
you should be fine
To solve your error you have to update your compileSDKversion to the newest version which is currently 31.
You can find the compileSDKversion inside android > app > build.gradle
android {
compileSdkVersion 31
...
}
Note: you have to close and open android studio again
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.
I am trying to run my code on AndroidStudio by using Flutter but when I run it shows an error:
Warning: CocoaPods not installed. Skipping pod install. CocoaPods is
used to retrieve the iOS and macOS platform side's plugin code that
responds to your plugin usage on the Dart side. Without CocoaPods,
plugins will not work on iOS or macOS. For more info, see
https://flutter.dev/platform-plugins To install see
https://guides.cocoapods.org/using/getting-started.html#installation
for instructions.
CocoaPods not installed or not in valid state. Error launching
application on iPhone 11.
flutter doctor shows that all is fine, I looked around a lot and tried lots of things like uninstall it and install it again, and tried adding:
dev_dependencies:
build_runner: ^1.10.0
dependency_overrides:
analyzer: 0.39.14
and tried
flutter channel stable
flutter upgrade
and tried
flutter channel master
flutter upgrade
But nothing worked, note that when I write "which pod" it shows the path, that means it exists right? then what is the problem? please help :(
have you tried to run pod install from the ios folder?
The only thing that worked with me is using android emulator, ios simulator still show the same error
I had the same issue and I found a solution, but with still an answered question. See my question (and one partial solution) here
The partial solution is: in Android Studio, click on the tab "Terminal" at the bottom of the IDE and in this pane, type flutter run. It does the same as the button Run, and Android Studio stopped complaining about CocaPods.
To stop the app, type q in the same terminal.
My project was working okay before I got Flutter upgrade prompt. After accepting to upgrade flutter, I started getting the following exception and now with every flutter command I get this exception. Also since that problem started Android Studio does not pick up any running emulator. So basically, I'm stuck, please help. It just displays "Loading..." instead of displaying the running Emulator.
Version Information:
Android Studio 3.4.2 • Flutter plugin io.flutter 38.2.1 • Dart plugin 183.6270
I've change the permission for git.EXE to allow for read, execute etc but this has not helped.
ERROR MESSAGE:
CreateProcessW failed 5
Unhandled exception:
ProcessException: Access is denied.
I have faced the same issue after running the flutter upgrade command
Remove exiting flutter SDK from the directory "https://flutter.dev/docs/get-started/install" and download again and run the following command
flutter doctor -v
After running the flutter upgrade command in the Windows CMD I faced the same issue.
I then tried to upgrade Flutter SDK using the Android Studio terminal and it upgraded successfully.
Log:
E:\Flutter>flutter doctor Checking Dart SDK version... Downloading
Dart SDK from Flutter engine ead227f a... Unzipping Dart SDK...
Updating flutter tool... Error: Unable to 'pub upgrade' flutter tool.
Retrying in five seconds...
Waiting for 0 seconds, press CTRL+C to quit ... Error: Unable to 'pub
upgrade' flutter tool. Retrying in five seconds...
Waiting for 0 seconds, press CTRL+C to quit ... Error: Unable to 'pub
upgrade' flutter tool. Retrying in five seconds...
Waiting for 0 seconds, press CTRL+C to quit ... Error: Unable to 'pub
upgrade' flutter tool. Retrying in five seconds...
Waiting for 0 seconds, press CTRL+C to quit ... Error: Unable to 'pub
upgrade' flutter tool. Retrying in five seconds...
Waiting for 0 seconds, press CTRL+C to quit ... Error: Unable to 'pub
upgrade' flutter tool. Retrying in five seconds...
First Make sure you have a working internet connection and if this issue still exists then, this error may be because the dart sdk may have not been properly downloaded.
The simplest solution is to delete the cache folder located in
flutter/bin(location where flutter is installed) and then Run flutter doctor
I fix that by:
Ctrl+C to stop infinite error loop.
Kill the Dart process in Windows Task Manager.
Delete the cache folder located in flutter/bin directory.
Run in command line flutter pub cache repair.
After that I run flutter doctor and get predictable results:
e:\tools>flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, v1.12.13+hotfix.9, on Microsoft Windows [Version
6.1.7601], locale ru-RU)
[√] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
[√] Android Studio (version 3.6)
[!] IntelliJ IDEA Community Edition (version 2019.2)
X Flutter plugin not installed; this adds Flutter specific functionality.
X Dart plugin not installed; this adds Dart specific functionality.
[!] IntelliJ IDEA Ultimate Edition (version 2019.2)
X Flutter plugin not installed; this adds Flutter specific functionality.
X Dart plugin not installed; this adds Dart specific functionality.
[√] VS Code (version 1.44.2)
[√] Connected device (1 available)
! Doctor found issues in 2 categories.
I found my antivirus blocks pub upgrade,I had same issue while hitting flutter doctor, I turned off my antivirus and tried to run "flutter doctor" again, and worked well!
windows:
simplest and easiest way is download the latest version flutter sdk. replace manually current folder by pasting downloaded flutter folder instead of the current folder
in c drive. always choose replace and paste.
after finishing that check with flutter doctor. my issue solved
Solved this issue when Run the CMD as administrative.
This issue will come in protected network as well as due to anti-virus. Even I was facing the same. I downloaded latest stable version manually from the following link, which doesn't required any update process and it works for now..
Download Link For Flutter in Zip format
I updated the flutter SDK via git pull, then the flutter doctor command works.
Just delete the cache folder in flutter/bin and run flutter doctor again!!
Just Deactivate your antivirus and run it again. It would work fine. I had the same issue before.
I deactivated my antivirus for some time and executed flutter doctor command once again in cmd and got fruitful results after hours of patience.
One more thing to note, you should ensure that path of dart-sdk folder should be added to the path in user variables.
It seems it is not being able to "unzip" the downloaded Dart file because it misses 7-zip uncompressor.
I installed it and it worked! It will deal with .7z files.
I hope it works for other people too!!
I had the same problem and it was solved.
Steps:
Download Dart and Filters SDK then Decompress these files and move them to this directory.
C: \
Define the variables in path:
Delete cache directory in flutter/bin
Then run flutter doctor
Make sure you downloaded the windows powershell i use windows 8 it wasn't installed by default , when i downloaded it it worked for me.
Check your flutter bin path in environment variable(User Variables). If not go to Under User variables check if there is an entry called Path:in that add this flutter/bin path.
Strangly when I kill the dart process in Windows Task Manager it is working. But sometimes even when dart process is running update working.
I had to turn off the Android Emulator. It was running for me...
I got the same error and was not able to get rid of it. So I deleted the flutter and instead of cloning it I downloaded the zip from the flutter website and extracted it. Now it works just fine.
Manually downloading the SDK from flutter website fixed the issue.
Still dont know why this problem occured tho.
If you are using Avast (or possibly some other anti virus too) on Mac and have recently updated the OS to Big Sur then follow the below steps to fix this issue
Open Avast and in the Web Shield area disable the "Scan secure connection".
Run flutter config --no-analytics and then run pub upgrade.
This should probably fix the issue.
You can also refer to below threads in Github for more details about the cause
https://github.com/flutter/flutter/issues/40515
https://github.com/flutter/flutter/issues/68999
In my case, the error resolve after adding below folder into exclude option in anti virus
Flutter SDK location
D:\Android\flutter_windows\flutter\*.
Flutter Local Pub folder
C:\Users\hitesh\AppData\Local\Pub
You get the error --
"Pub failed to delete entry because it was in use by another process.
This may be caused by a virus scanner or having a file
in the directory open in another application.
Error (1): Unable to 'pub upgrade' flutter tool. Retrying in five seconds... (1 tries left)" even if you are in one of the flutter directories from Windows explorer. Close the window and try running Flutter doctor. This will resolve.
If anyone faces this problem on macOS with AdGuard installed. Try this:
Go AdGuard Preferences -> Network -> Automatically filter applications -> Select Mode... and change mode to Automatic Proxy.
Pub failed to delete entry because it was in use by another process.
This may be caused by a virus scanner or having a file
in the directory open in another application.
Error (1): Unable to 'pub upgrade' flutter tool. Retrying in five seconds... (9 tries left)
Tried switch to Dev channel and got stuck with "Unable to pub upgrade". Did everything and nothing worked.
This is what I did:
Renamed the Flutter SDK folder
Download the latest Flutter SDK
Extract to the same location of previous renamed SDK
Flutter channel Dev
Flutter upgrade
And everything back to normal.
Source of Problem
It might be possible that you don't have enough free disk space. That's what caused my problems to begin with.
Solution
In my case,
First I had to clean up space to remove any unused files.
Then I had to overwrite the flutter SDK folder due to corruption. The SDK can be found here.
I had the same issue with my MacBook M1. I tried deleting and running flutter pub cache repair But It didn't work for me.
Then I ran the command softwareupdate --install-rosetta and accepted the software licences & agreement (After installing XCode). Now the command flutter works fine. :)
Tried all of the above without success. The search order in the PATH system variable turned out to be the problem:
it was:
G:\My Drive\Compilers\flutter\bin;
G:\My Drive\Compilers\flutter\bin\flutter;
G:\My Drive\Compilers\flutter\bin\flutter.bat;
G:\My Drive\Compilers\flutter\bin\dart.exe;
G:\My Drive\Compilers\flutter\bin\dart;
G:\My Drive\Compilers\flutter\bin\dart.bat;
changed it to:
G:\My Drive\Compilers\flutter\bin\flutter
G:\My Drive\Compilers\flutter\bin\flutter.bat
G:\My Drive\Compilers\flutter\bin\dart
G:\My Drive\Compilers\flutter\bin\dart.bat
that fixed it
Mac auto iCloud upload might be causing the error
If you are using Mac and if your Desktop files are being uploaded to iCloud automatically, sometimes iCloud uploads the "bin" file or the "cache" file inside the flutter file. I've just downloaded the file onto desktop (right click the file -> "Download Now") and it downloaded the file, it ran as usual. (Automatic upload can be turned off from system preferences if youn are getting this error frequently like I was).
For my case, i was using ubuntu, and after reading the above comments, i have come to a resolution that the above error comes as a result of permissions being blocked, accessing cmd with admin access levels solves the problem, e.g on linux run sudo flutter doctor and the problem will be solved.
This error occured to me when i tried upgrading my flutter so it needed admin rights to be upgraded nothing much