trackColor property

WidgetStateProperty<Color?>? trackColor
final

The color of this Switch's track.

Resolved in the following states:

This example resolves the trackColor based on the current WidgetState of the Switch, providing a different Color when it is WidgetState.disabled.

Switch(
  value: _value,
  // If `onChanged` is null, this switch is disabled.
  // If `onChanged` is not null, this switch is enabled.
  onChanged: _nullableOnChanged,
  trackColor: WidgetStateProperty.resolveWith<Color>((
    Set<WidgetState> states,
  ) {
    if (states.contains(WidgetState.disabled)) {
      return Colors.orange.withValues(alpha: .48);
    }
    return Colors.orange;
  }),
)

If specified, overrides the default value of Switch.trackColor.

Implementation

final WidgetStateProperty<Color?>? trackColor;