Following these directions, like:
Install the Flutter and Dart plugins
Start VS Code.
Invoke View > Command Palette….
Type “install”, and select Extensions: Install Extensions.
Type “flutter” in the extensions search field, select Flutter in the list, and click Install. This also installs the required Dart plugin.
Validate your setup with the Flutter Doctor
Invoke View > Command Palette….
Type “doctor”, and select the Flutter: Run Flutter Doctor.
Review the output in the OUTPUT pane for any issues. Make sure to select Flutter from the dropdown in the different Output Options.
Step 3 of validate instructions results with OUTPUT:
I did install flutter, and flutter doctor in a new command shell gives result:
What am I missing here? I also try VSCode extension palette command Flutter: New Application Project and that also fails with:
Make sure that you have installed Git and that you can access it from the command line. Check your PATH. Flutter SDK directory should be present there.
If that does not work, you should try to reinstall the dart and flutter extension.
Next Step should be to reinstall flutter.
It occurred to me that my attempt to support multiple flutter versions might be going outside of the conventions supported by the Flutter extension for VSCode.
Here's what's up!... If you think you're smart like me and installed different versions of flutter in folders like c:\src\flutter\1.20.2 and c:\src\flutter\1.22.6, then you can forget it because the extension is smarter than us, and will ignore this regardless of our PATH assignment.
Copying contents of my flutter install from c:\src\flutter\1.22.6 to the parent folder c:\src\flutter resolved my issue. I need to review how to easily support different versions of flutter. Hmmm..
BTW... what I realized in retrospect is that the complaint about git is raised by the extension not finding the .git folder under the flutter folder (i.e. c:\src\flutter) that it presumed as the path to my flutter install. Well duh!! That's because I want flutter to be sourced at the versioned sub-folder (i.e. c:\src\flutter\1.22.6). Oh well.
Some scenarios I am left pondering:
How to correctly support multiple flutter installations while also benefiting from the extension (is there a way to configure this extension or my environment as a whole)?
Are my expectations to support multiple flutter installations unreasonable?
If my expectations are reasonable, and there are no known or documented way to support multiple flutter installations while also using this extension, then perhaps the extension has a bug?
Related
There are many libraries I use every day from pub and they work. But today I run into a problem with qr_code_scanner. After installing it with flutter pub add qr_code_scanner and running flutter pub get, I get in code:
Same with auto import for classes from this file like QRViewController. What I also did is running flutter upgrade, flutter clean and everything else that came to my mind - still getting this error with that package.
Any other thoughts how can I solve it?
Some of the packages you are using are upgraded to flutter3 and some are still Flutter version < 3. Which is why you might be facing an issue. If you are trying to build an older project I would recommend you to downgrade your package versions which is compatible with flutter < 3 and use flutter version < 3. If you are adding any packages through pub add you might get an error if the pub get is not resolved. Please check the same in terminal.
For anyone who will have the same issue, I found a workaround. I've also tried few other libraries that beside the fact was installed couldn't access them from anywhere in code.
So after all every pub.dev lib is just the code right? You can download the source file and add it into your lib folder. Well, you have to upgrade it manually if needed but at the end it works and that's the main goal!
EDIT:
Another possible solution, as I found out, I did reset my Mac, upgraded environment (VS Code), done flutter clean and flutter pub get and looks like it's working as it should without mentioned workaround so probably the issue was around the coding environment rather than with Flutter and fetched libraries.
I have been having issues with installing this package https://pub.dev/packages/graphql_flutter/install one of it's dependencies is this graphql package https://pub.dev/packages/graphql. When i do pub get it installs en shows everything expect for the graphql package in the dart packages folders. I have tried to install the graphql package separately but the package still doesnt show up than. And the import still gives the error "Target of URI doesn't exist: 'package:graphql/client.dart'." But it does show up in flutter/.pub-cache/hosted/pub.dartlang.org so i dont understand why it doesnt show in my project. I have tried using flutter clean, flutter clean pub cache and androidstudio's invalidate caches/restart function to no avail. I have also tried restarting android studio and my pc multiple times. I have also tried it with androidstudio run as admin.
This is my pubspec.yaml
this is part of my Dart packages folder as you can see it does not show
And this is the pub.dartlang.org folder on my pc
It ended up getting randomly fixed after 3 days. I just started android studio up and tried it again and suddenly it worked. No idea what fixed it in the end
Seen this issue a few times. Open Task manager in windows and check for adb.exe. There should be one copy running. I had 2 copies so removed 1 and restarted the other.
right-click --> end task for both.
All ok then.
Reloading VS code worked for me..
Reloading can be done ---> Command + R for Mac.
flutter application is not created even after the android and flutter plugin installation setup.
I have followed the following steps as given in the link
Flutter Installatioon steps
I dont know where I went wrong,. which installation steps I have missed.
My system is windows 32 bit.
I am encllosing the required screen shotsError screenshot
my system configuration
User Variable. path
Pleasee help me by fixing this issue
Try using Git instead of command line (cmd) and fix the path for flutter you should get the correct address for that for example: C:\flutter\bin
Currently i was trying on flutter web for which i needed to work on flutter master channel. But, then i needed to work on my other projects. On them i am working on flutter stable channel.
But, every time i switch my flutter channel using the command "flutter channel stable" or "flutter channel master", It keeps re-downloading sdk and other tools every time.
Currently, i have downloaded stable flutter sdk and stable dart sdk.
I have moved them in a "FlutterSDK" folder with two other folders "stable" & "master" in it. Both folders contains the stable flutter & dart sdk.
But, it keeps re-downloading the resources. What am i doing wrong ?
Can anyone help with this?
Thanks.
You may have a look on Flutter FVM. This tool allows you to manage multiple channels and releases, and caches these versions locally, so you don't have to wait for a full setup every time you want to switch versions.
Solution for Linux(possibly MacOS)
Download pure flutter
Unzip it.
Change the name to "flutter-stable"
Make a copy of this folder.
Change the name of the copy to "flutter-web" (for example).
Open the .bashrc file in your home folder.
Add two lines at the end:
alias flutter = "{your directory path}/flutter-stable/flutter"
alias flutter-web = "{your path to folder}/flutter-web/flutter"
Restart the computer (or log out and log back in).
Enter in the terminal "flutter doctor -v" and "flutter-web doctor -v" (to download the necessary files)
Enter "flutter-web channel" in the terminal to find out the current branch (marked with a star)
In order to change the branch, enter the "flutter-web channel master" in the terminal (instead of the master, you can choose any other)
Enter "flutter-web upgrade" in the terminal to update the branch.
Done. If you need a stable version, then use flutter (flutter pub get), if for the web, then flutter-web (flutter-web pub get)
Ps if you already have a stable version, then:
skip point 3 and 4. (you don't need to make copies, just download a clean flutter sdk, unpack, rename it, and put it next to the existing one)
remove the path to the flutter sdk from the environment so that there is no name conflict (requires a reboot)
How do I get flutter doctor on my Windows 10 laptop to work, please?
I followed the guidelines here,
Used git to clone the flutter repository,
git clone -b alpha https://github.com/flutter/flutter.git,
Tried adding "C:\Users\<user>\flutter\bin" to my path in the Control Panel
and then in an Admin Powershell, tried executing flutter doctor.
At first, it just hung.
After googling for help, I tried deleting the contents of the
C:\Users\<user>\flutter\bin\cache folder and re-executing flutter doctor but to no avail.
Then, I tried deleting all of flutter and cloning again but flutter doctor just hung again but with, Updating flutter tool.
Tried a few different Googled PATH-adding ideas (that seems to be a complex and disputed area.)
Got a new message: Waiting for another flutter command to release the startuplock
The latest state is that flutter doctor still just hangs but without any message.
I suspect the problem lies in the new Path not being properly recognised (in the registers??)
Can anyone help please?
Well, the issue is not clear enough, but this might be solution, if your flutter doctor is stuck, it might be due to Background Intelligent Transfer Service is disabled, in order to check for yourself, do the following:
Click on the start menu, and then start typing services.
Launch the services and look for Background Intelligent Transfer Service and make sure it is running.
At this stage I believe you will find it disabled for some reason, just right click on it and go to properties and start the service, also change the startup type to automatic.
I can not think of other reasons that might prevent flutter doctor to run for the first time on a Windows machine other than that honestly.
I know this question is a little bit old. Here is a solution that worked for me. Run the Command Prompt as an admin solved the issue for me.
For Windows user check to see if the unzipped flutter folder is read only. (i.e right click the folder then properties then in the attributes section untick the readonly property then apply this change to the folder along with the sub-folders then ok and thats it. Worked for me.
Some errors I got and how I fixed it:
(ERROR 1):
[flutter] flutter doctor -v 'crumb' is not recognized as an internal or external command, operable program or batch file.
Error: Unable to find git in your PATH. exit code 1
(Fix) - Go to flutter installation folder and inside flutter/bin edit the flutter.bat file using a text editor and remove the line (20) that says:
IF EXIST "%mingit_path%" SET PATH=%PATH%;%mingit_path%
The code should look like this on those lines:
REM If available, add location of bundled mingit to PATH
SET mingit_path=%FLUTTER_ROOT%\bin\mingit\cmd
Save and Run flutter doctor and everything should work fine.
(ERROR 2):
flutter doctor takes too long
(Fix) - I downloaded the previous version of the sdk it worked like a charm.
(ERROR 3):
Android sdkmanager not found. Update to the latest Android SDK and ensure that the cmdline-tools are installed to resolve this.
(Fix):
Open Android Studio
Tools Menu, SDK Manager
In the window that comes up there are inner panels, choose SDK Tools panel
Tick Android SDK Command-line Tools
Choose Apply button near the bottom of the window
This worked.
(ERROR 4):
The term 'flutter' is not recognized as the name of a cmdlet, function, script file, or operable program.
(Fix) - Put the correct part in the env variables. I had put D:\flutter instead of D:\flutter\bin. That worked.
I got a solution that worked for me
initially i had downloaded the 2.2.5 SDK which gave the forever run error so i went back and downloaded the previous version ie 2.2.2 it worked like a charm
The Flutter SDK is installed in a protected folder and may not function correctly. Please move the SDK to a location that is user-writable without Administration permissions and restart.