How do you use enums?

Enums are used when we know all possible values at compile-time , such as choices on a menu, rounding modes, command-line flags, etc. It is not necessary that the set of constants in an enum type stay fixed for all time. In Java (from 1.5), enums are represented using enum data type.

An enum type is a special data type that enables for a variable to be a set of predefined constants . The variable must be equal to one of the values that have been predefined for it. Common examples include compass directions (values of NORTH, SOUTH, EAST, and WEST) and the days of the week.

First, you need to update your DropdownButton type argument to ClassType and not String . In Dart, an enum declaration creates a new type, not Strings. DropdownButton(…); Next, you need to change the enum names.

An enum type is a special data type that enables for a variable to be a set of predefined constants . The variable must be equal to one of the values that have been predefined for it. Common examples include compass directions (values of NORTH, SOUTH, EAST, and WEST) and the days of the week.

A dart enum is basically a list of named constant values . In dart program enum keyword is used to define enumeration type in dart. In dart enum is been used to define a collection of constant. Syntax: enum enum_name{

In Dart, Enums are a special kind of class used to represent a fixed number of constant values and declaration is pretty straightforward: Enum cases in Dart language are zero based indexed. This means each case defined in the enum type can be accessed by their index-value depending the order of definition.19 Eyl 2019

A dart enum is basically a list of named constant values . In dart program enum keyword is used to define enumeration type in dart. In dart enum is been used to define a collection of constant. Syntax: enum enum_name{