showDragHandle property
final
Specifies whether a drag handle is shown.
The drag handle appears at the top of the bottom sheet. The default color is
ColorScheme.onSurfaceVariant with an opacity of 0.4 and can be customized
using dragHandleColor. The default size is Size(32,4) and can be customized
with dragHandleSize.
If null, then the value of BottomSheetThemeData.showDragHandle is used. If that is also null, defaults to false.
If this is true, the animationController must not be null. Use BottomSheet.createAnimationController to create one, or provide another AnimationController.
Implementation
final bool? showDragHandle;