Flutter:如何将图标放置在 CircleAvatar 上并将其居中?

zwe*_*bar 8 icons center dart flutter

在此输入图像描述

我想将相机图标居中,但我做不到。我尝试使用图像而不是图标,但这仍然不起作用。我认为它不起作用,因为不可能在 CircleAvatar 上放置图标,但必须有办法做到这一点。这是我的代码:

    return SizedBox(
      height: 115,
      width: 115,
      child: Stack(
        clipBehavior: Clip.none,
        fit: StackFit.expand,
        children: [
          CircleAvatar(
            backgroundImage: AssetImage("assets/images/Profile Image.png"),
          ),
          Positioned(
              right: -16,
              bottom: 0,
              child: SizedBox(
                  height: 46,
                  width: 46,
                  child: FlatButton(
                    shape: RoundedRectangleBorder(
                      borderRadius: BorderRadius.circular(50),
                      side: BorderSide(color: Colors.white),
                    ),
                    color: Color(0xFFF5F6F9),
                    onPressed: () {},
                    // TODO: Icon not centered.
                    child: Center(child: Icon(Icons.camera_alt_outlined)),
                  )))
        ],
      ),
    );
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zwe*_*bar 13

Widget build(BuildContext context) {
    return SizedBox(
      height: 115,
      width: 115,
      child: Stack(
        clipBehavior: Clip.none,
        fit: StackFit.expand,
        children: [
          CircleAvatar(
            backgroundImage: AssetImage("assets/images/Profile Image.png"),
          ),
          Positioned(
              bottom: 0,
              right: -25,
              child: RawMaterialButton(
                onPressed: () {},
                elevation: 2.0,
                fillColor: Color(0xFFF5F6F9),
                child: Icon(Icons.camera_alt_outlined, color: Colors.blue,),
                padding: EdgeInsets.all(15.0),
                shape: CircleBorder(),
              )),
        ],
      ),
    );
  }
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我删除了 SizedBox 并使用 RawMaterialButton 代替。


Bor*_*tou 5

不使用 CircleAvatar,而是使用这样的容器:

 Container(
                  height: 46,
                  width: 46,
                  decoration: BoxDecoration(
                    shape: BoxShape.circle,
                    color: Colors.green,
                  ),
                  child: Icon(Icons.camera, color: Colors.white,),
                  alignment: Alignment.center,
                ),
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