Flutter开发之——Scaffold，Android开发指南_scaffold android

this.drawer, //左边的抽屉

this.onDrawerChanged,//左边抽屉发生变化

this.endDrawer, //右边的抽屉

this.onEndDrawerChanged, //右边抽屉发生变化

this.bottomNavigationBar, //底部导航菜单

this.bottomSheet,//底部持久化提示框

this.backgroundColor, //内容背景色

this.resizeToAvoidBottomPadding,//键盘出现时，界面重新布局(已过时)

this.resizeToAvoidBottomInset, //键盘出现时，界面重新布局(代替resizeToAvoidBottomPadding)

this.primary = true,//AppBar是否显示在屏幕顶部(默认显示为true)

this.drawerDragStartBehavior = DragStartBehavior.start,

this.extendBody = false,

this.extendBodyBehindAppBar = false,

this.drawerScrimColor,

this.drawerEdgeDragWidth,

this.drawerEnableOpenDragGesture = true,

this.endDrawerEnableOpenDragGesture = true,

}) : assert(primary != null),

assert(extendBody != null),

assert(extendBodyBehindAppBar != null),

assert(drawerDragStartBehavior != null),

s