“The constructor returns type 'Color' that isn't of expected type 'MaterialColor'.” Code Answer

The constructor returns type 'Color' that isn't of expected type 'MaterialColor'.

dart by Powerful Polecat         on Jul 21 2021 Donate Comment

1

primarySwatch takes a ColorSwatch [which MaterialColor extends]. A swatch is a map of shades for a color (from [50] to [900]). Colors.teal is a swatch, it includes all the different Color variations of teal, of which teal[100] is just one. Colors.teal[100] is an individual Color, it can't be assigned to a property that expects a full swatch. Hope this clarifies things, you can also take a look at the Colors documentation (https://api.flutter.dev/flutter/material/Colors-class.html) for more details.

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