Flutter基础widgets教程-CupertinoNavigationBar篇

CupertinoNavigationBar({
    Key key,
    this.leading,
    this.automaticallyImplyLeading = true,
    this.automaticallyImplyMiddle = true,
    this.previousPageTitle,
    this.middle,
    this.trailing,
    this.border = _kDefaultNavBarBorder,
    this.backgroundColor,
    this.brightness,
    this.padding,
    this.actionsForegroundColor,
    this.transitionBetweenRoutes = true,
    this.heroTag = _defaultHeroTag,
})

leading: Icon(Icons.arrow_back),

automaticallyImplyLeading : true,

automaticallyImplyMiddle : true,

previousPageTitle : "返回",

middle: Text("标题"),

trailing: Image.asset(
    "lib/assets/sample/image.jpg", 
    width: 25.0, 
    height: 25.0
),

backgroundColor: Color(0xfff1f1f1),

padding: EdgeInsets.symmetric(vertical: 20.0,horizontal: 10.0),

actionsForegroundColor: Colors.red,