How to use colors and titles inside flutter lists and maps-CodePudding

The compiler can't tell that this is a Color. The solution is to cast it to a Color since you are certain that this is a Color object, like:

color: myCatagory[index]['color'] as Color,

CodePudding user response：

myCategory is a type of List<Map<String, Object?>>

You need to cast to a Color like so: myCatagory[index]['color'] as Color,

You'll see the warning when you hover over the red line. Something in the line of

A value of type 'Object?' can't be assigned to a variable of type 'Color'

A nicer way to structure your list would be to use a map

final Map<String, Color> myCategories = {
 'Samsung': Colors.pink[800],
 'Symphony': Colors.tealAccent[800],
 //the others ...
}

And then get the color: myCategories.entries.elementAt(index).value

And the title: myCategories.entries.elementAt(index).key

CodePudding user response：

You can add it as a hex value and parse it to int like:

 {
      'title': 'Symphony',
      'color': '0xFFB74093',
    },

color:  Color(int.parse(myCatagory[index]['color'].toString())),