PositionedDencendToastBuilder typedef
PositionedDencendToastBuilder =
Widget Function(BuildContext context, Widget child, DencendToastGravity? gravity)
构建 Toast 的自定义定位函数签名
允许开发者完全自定义 Toast 的位置和样式
Implementation
typedef PositionedDencendToastBuilder = Widget Function(BuildContext context, Widget child, DencendToastGravity? gravity);