I am running flutter on my windows machine, it was working earlier and I have created demo project with it.
Today when I run VSCode it asked me to update flutter and I did, but when it is updated it is not able to run any command. It doesn't do anything, neither error nor success. It just get stucked with any flutter command.
Note : It was working earlier, so there is no chance of setting environment variables, still I have double checked it and it is there.
I did not find any solution for this so the last available approach for me was to reinstall flutter SDK and it worked.
Note: If you are windows user, you might get an error about PowerShell version, you must have PowerShell version greater than 5.1
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I recently tried running flutter upgrade and it seemed to run successfully. But after that the flutter command itself stopped working. Every time I try to run a flutter command it gives this error
'sysctl -n hw.optional.arm64' returned unexpected output: ''
I'm using a MacBook Pro with an Intel i7 processor.
I couldn't find anything on this error online. I also tried doing a git reset and a git pull on the flutter (core) directory. Nothing seems to help.
What could the issue be?
I managed to fix it. For some reason after upgrading flutter the path variable got messed up, at least in my .zshrc file. So I had to go and add the usr/sbin path to the PATH variable. That's where the sysctl program sits and that's why it was giving an error that the output is empty.
Hope this helps someone.
I'm new in flutter and trying to learn about it for the first time.
I'm following the instruction of flutter documentation in here
When in step to the setting environment, I follow the instruction here.
After restarting the pc, the next step I must running the command flutter doctor in cmd.
In this step, I get stuck because in cmd, flutter doesn't response anything.
I try to execute flutter inside VSCode It still stuck with loading.
I also try to running with android studio, Still the same, I get stuck with loading
What should I do?
I missed the important thing.
Just don't put it in the privilege directory.
I'm relatively new to Flutter but I already have developed and finished some Apps in Flutter.
Recently I noticed a weird behavior of commands with the keywords "dart" or "flutter" in it.
Here is an example:
I was trying to migrate an existing project to the new dart null-safety and typed the command dart migrate into my Visual-Studio-Code Terminal.
I was expecting an output like Migrating C:\.... as a response but instead got these three lines:
The command "git" is either misspelled or could not be found.
Building flutter tool...
Running pub upgrade...
and then the expected output:
Migrating C:\<project path>...
and so on.
So basically the commands work as they would normally do but I get these three lines before the output everytime. And it's not only with this command. Also basic commands like dart help or flutter doctor will get these three lines.
I don't know what I am doing wrong. I uninstalled Flutter and also removed it from the PATH and then reinstalled it freshly but it's still the same. I also searched the web but didn't found anyone who has the same problem.
Any help and explanation would be great. Thank you for your time :)
I think I know where the problem is. I ran the commands directly when I opened PowerShell. But the directory was something like C:\Windows\ and then it won't work.
After I did cd C:\Users\User all commands will work as expected.
I was just thinking that it doesn't matter from where I run dartand fluttercommands obviously you have to be in your user directory that they will work properly.
When I type flutter --version or flutter doctor in powershell, nothing is showing, a command prompt like window is opened for half a second and goes.
I can't see the output of the commands
I have downloaded flutter.
After the download when I first run the commands it was working in powershell and after that it is not working.please help I am a beginner.
Flutter require the powershell version 5.0 or newer.So check the version and update and also type that command in command prompt to check flutter is installed successfully or not.
After latest Flutter 1.0 stable and Dart update to vscode, I,m unable to use hotreload from vscode. If I run it from a terminal everytnhing works fine. Flutter doctor has no complains and I'm not sure how to fix it. I tried to uninstall flutter and dart from vscode but no luck so far. The error I get is
../../third_party/dart/runtime/vm/object.h: 8954: error: Handle check
failed: saw Instance of 'HomePage' expected Closure
I searched to find a solution but so far no luck.
This appears to be a bug in Dart or Flutter. It's possible it's the same as this one:
https://github.com/flutter/flutter/issues/24710
Can you reproduce in a small sample that you could easily attach to that issue and add some notes on your environment (what platform, what device, etc.) and if you get a full stack trace dumped when this happens, include that too.
Thanks!