Flutter版本1.7.0,长按textField时,触发文本复制或者选择功能时报错,具体报错信息大概如下

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创建工程不能用驼峰命名

flutter create ofFile
"ofFile" is not a valid Dart package name.


From the [Pubspec format
description](https://www.dartlang.org/tools/pub/pubspec.html):

**DO** use `lowercase_with_underscores` for package names.

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.

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