stack method

Stack stack({
  1. AlignmentGeometry alignment = AlignmentDirectional.topStart,
  2. StackFit fit = StackFit.loose,
})

创建层叠布局

@param alignment 子控件对齐方式（默认左上角对齐） @param fit 未定位子控件的尺寸适应策略（默认宽松适应） @return 包含当前子控件的Stack组件

Implementation

Stack stack(
    {AlignmentGeometry alignment = AlignmentDirectional.topStart,
    StackFit fit = StackFit.loose}) {
  return Stack(
    children: this,
    alignment: alignment,
    fit: fit,
  );
}