CODEWITHSUNDEEP
flutterdartconstructor
b s
b s

Reputation: 21

How can I fix "The named parameter 'colors' isn't defined" problem in Flutter?

I'm getting a parameter format error when I use const for gradient's colors.

                 Expanded(
                child: OpenContainer(
                  closedElevation: 0,
                  transitionType: ContainerTransitionType.fade,
                  transitionDuration: const Duration(milliseconds: 1000),
                  closedColor: const Color(0xFFE9E9E9),
                  openBuilder: (context, _) {
                    return WorkoutScreen();
                  },
                  closedBuilder: (context, VoidCallback openContainer) {
                    return GestureDetector(
                      onTap: openContainer,
                      child: Container(
                        margin: const EdgeInsets.only(bottom: 10, left: 32, right: 32),
                        decoration: BoxDecoration(
                          borderRadius: BorderRadius.all(Radius.circular(30)),
                          gradient: LinearGradient(
                            begin: Alignment.topCenter,
                            end: Alignment.bottomCenter,
                            **colors: [
                              const Color(0xFF20008B),
                              const Color(0xFF200087),
                            ],**
                          ),
                        ),

Here's an error message: The named parameter 'colors' isn't defined. Try correcting the name to an existing named parameter's name, or defining a named parameter with the name 'colors'.

exact error image

Upvotes: 0

Views: 1857

Answers (1)

John Wiese
John Wiese

Reputation: 66

You can try fixing this by doing a flutter clean in the terminal window and then waiting for VSCode to re-analyze your file.

Upvotes: 1

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