Error: DatePickerTheme' isn't a function.

[AKovynev]

Today I am getting an error: 'DatePickerTheme' isn't a function.
Try correcting the name to match an existing function, or define a method or function named 'DatePickerTheme'.

[sarp86]

Any solutions? We should wait for fix?

[SerdarYildiz06]

It may seem irrelevant, but when I referenced the package from github, not pubdev, this problem was solved.

[ajayprakashshukla]

It may seem irrelevant, but when I referenced the package from github, not pubdev, this problem was solved.

This didn't work out in my case, I still get the error.
I'm referencing the package as such :

  flutter_datetime_picker:
    git:
      url: https://github.com/Realank/flutter_datetime_picker.git
      ref: master

[Anyitechs]

It may seem irrelevant, but when I referenced the package from github, not pubdev, this problem was solved.

This didn't work out in my case, I still get the error. I'm referencing the package as such :

  flutter_datetime_picker:
    git:
      url: https://github.com/Realank/flutter_datetime_picker.git
      ref: master

I fixed this earlier internally. All I did was to rename the DatePickerTheme being imported from 'package:flutter_datetime_picker/src/datetime_picker_theme.dart' as it's conflicting with Flutter's native DatePickerTheme function. Or you can refer to the fix on this PR that fixes the issue using aliases.

[rs-huypq]

You can try this
Change to this and use dtpicker or any name you want

import 'package:flutter_datetime_picker/flutter_datetime_picker.dart' as dtpicker;

After

dtpicker.DatePicker(...)
or
dtpicker.DatePickerTheme(...)