1.appBar 官方 api 声明
AppBar({
Key? key,
this.leading,
this.automaticallyImplyLeading = true,
this.title,
this.actions,
this.flexibleSpace,
this.bottom,
this.elevation,
this.shadowColor,
this.shape,
this.backgroundColor,
this.foregroundColor,
this.brightness,
this.iconTheme,
this.actionsIconTheme,
this.textTheme,
this.primary = true,
this.centerTitle,
this.excludeHeaderSemantics = false,
this.titleSpacing,
this.toolbarOpacity = 1.0,
this.bottomOpacity = 1.0,
this.toolbarHeight,
this.leadingWidth,
this.backwardsCompatibility,
this.toolbarTextStyle,
this.titleTextStyle,
this.systemOverlayStyle,
})
每个属性的作用，建议自写 demo 尝试，这里只做常用的属性测试。
2.设置标题
appBar: new AppBar(
title: Text('标题'),
textTheme: TextTheme(
title: TextStyle(
color: Colors.black,
fontSize: 20,
)),
brightness: Brightness.light,
backgroundColor: Colors.white,
),
