Sliver Appbar上的圈轮廓图像

Question

我试图在银条应用程序栏上添加一个圆圈轮廓图像按钮，但银条应用程序栏显示效果不佳。这就是我得到的，如何在条形应用栏上获得圆形轮廓图像？

我的代码：

    @override
  Widget build(BuildContext context) {
    return Scaffold(
       body: CustomScrollView(
          slivers: <Widget>[
            SliverAppBar(
              title: Text('Home'),
              leading: Container(),
              actions: <Widget>[
                IconButton(
                    icon: Icon(Icons.notifications),
                    onPressed: () {}),
                Padding(
                  padding: const EdgeInsets.all(8.0),
                  child: InkWell(
                    child: Container(
                      height: 30,
                      width: 30,
                      decoration: BoxDecoration(
                          borderRadius: BorderRadius.circular(25.0),
                          image: DecorationImage(image: AssetImage('assets/images/blank_profile.png'))
                      ),
                    ),
                    onTap: () => Navigator.push(context, new MaterialPageRoute(builder: (BuildContext context) => ProfilePage())),
                  ),
                ),
              ],

            ),

使用CircleAvatar：

 @override
  Widget build(BuildContext context) {
    return Scaffold(
       body: CustomScrollView(
          slivers: <Widget>[
            SliverAppBar(
              title: Text('Home'),
              backgroundColor: Colors.deepOrange,
              leading: Container(),
              actions: <Widget>[
                IconButton(
                    icon: Icon(Icons.notifications),
                    onPressed: () {}),
                CircleAvatar(
                  backgroundImage: AssetImage('assets/images/blank_profile.png'),
                  minRadius: 28,
                ),
              ],

            ),

Answer 1

为此，您必须使用CircleAvatar。

这是您可以使用的代码：

SliverAppBar(
  title: Text('Home'),
  leading: Container(),
  actions: <Widget>[
    IconButton(
      icon: Icon(Icons.notifications),
      onPressed: () {}),
    CircleAvatar(
      child: ClipOval(
        child: Image.asset('assets/images/blank_profile.png'),
      ),
    ),
  ],
)