activeOpacity property
Double value that will be used as the opacity of the child when a pointer down event is registered. Defaults to 0.2, value must be between 1.0 and 0.0 .
Implementation
final double activeOpacity;
Double value that will be used as the opacity of the child when a pointer down event is registered. Defaults to 0.2, value must be between 1.0 and 0.0 .
final double activeOpacity;