I am getting the following error on running flutter create my_appName: "my_appName" is not a valid Dart package name

Question

I have tried upgrading flutter to the latest version. I am still getting the same error.

Answer 1

I was getting the exact same error.
After Renaming my working directory as per the naming convention attached by the Flutter team here which @Rushikesh just mentioned. It worked for me..
The reason is that the Flutter SDK uses directory/folder names as packages names and I was using a hyphen in my directory name. In your case mybmicalculator or my_bmi_calculator might work instead of myBmiCalculator .
Give it a try, that might be one of the errors.

Answer 2

Package names should be all lowercase, with underscores to separate words, just_like_this. Use only basic Latin letters and Arabic digits: [a-z0-9_]. Also, make sure the name is a valid Dart identifier -- that it doesn't start with digits and isn't a reserved word.

see this - https://dart-lang.github.io/linter/lints/package_names.html

Answer 3

I think your app's folder name has some capital letters, any digit at the start, or something like that. I faced this as my app's folder name had capital letters and when I used all small letters the problem was solved.

Answer 4

Don't use a capital letter at the beginning of your app name like this: flutter create Appname. You may encounter an error if you create a Flutter app with a capital letter at the beginning. To avoid errors, always use this method: flutter create appname, without a capital letter at the start.

Answer 5

in my case the android folder is missing and flutter create . is also not working how i fixed my problem is .

1. copy the android folder from any project.
2. re-open the project and everything works fine