SwitchButton constructor

SwitchButton({ Key? key, required bool value, required ValueChanged<bool>? onChanged, required Color activeTrackColor, required Color inactiveTrackColor, ImageProvider<Object>? activeThumbImage, ImageErrorListener? onActiveThumbImageError, ImageProvider<Object>? inactiveThumbImage, ImageErrorListener? onInactiveThumbImageError, WidgetStateProperty<Color?>? thumbColor, WidgetStateProperty<Color?>? trackColor, WidgetStateProperty<double?>? trackOutlineWidth, WidgetStateProperty<Icon?>? thumbIcon, MaterialTapTargetSize? materialTapTargetSize, DragStartBehavior dragStartBehavior = DragStartBehavior.start, MouseCursor? mouseCursor, Color? focusColor, Color? hoverColor, WidgetStateProperty<Color?>? overlayColor, double? splashRadius, FocusNode? focusNode, ValueChanged<bool>? onFocusChange, bool autofocus = false, EdgeInsetsGeometry? padding, })

创建一个自定义开关。

value 表示当前开关状态，onChanged 在状态切换时回传新值； activeTrackColor 和 inactiveTrackColor 分别设置开启与关闭时的轨道颜色。

Implementation

SwitchButton({
  super.key,
  required super.value,
  required super.onChanged,
  required Color activeTrackColor,
  required Color inactiveTrackColor,
  super.activeThumbImage,
  super.onActiveThumbImageError,
  super.inactiveThumbImage,
  super.onInactiveThumbImageError,
  super.thumbColor,
  super.trackColor,
  super.trackOutlineWidth,
  super.thumbIcon,
  super.materialTapTargetSize,
  super.dragStartBehavior,
  super.mouseCursor,
  super.focusColor,
  super.hoverColor,
  super.overlayColor,
  super.splashRadius,
  super.focusNode,
  super.onFocusChange,
  super.autofocus,
  super.padding,
}) : super(
       activeThumbColor: Colors.white,
       activeTrackColor: activeTrackColor,
       inactiveThumbColor: Colors.white,
       inactiveTrackColor: inactiveTrackColor,
       trackOutlineColor: WidgetStateProperty.all(Colors.transparent),
     );