为什么我无法在 Flutter 中更改 AppBar 中 CircleAvatar 或其他圆形小部件的高度？

Question

我试图在操作列表的 AppBar 内放置一个 CircleAvatar，但 CircleAvatar 会将其高度固定在 AppBar 的高度，使其无法调整大小并保持它是圆形的。我已经尝试过将它包装在 Container 或 SizedBox 中，但没有用。

示例：

import 'package:flutter/material.dart';

class HoursScreenEmployee extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Colors.white10,
        brightness: Brightness.light,
        elevation: 0,
        centerTitle: false,
        actions: [
          CircleAvatar(
            backgroundImage: NetworkImage("https://picsum.photos/500/300"),
            maxRadius: 15,
            minRadius: 15,
          ),
        ],
        title: Text(
          "La Chance ",
          style: TextStyle(
            fontFamily: "Masiva",
            fontSize: 27,
            fontWeight: FontWeight.w800,
            color: Colors.black,
          ),
        ),
      ),
    );
  }
}

Answer 1

您可以将 CircleAvatar 包装在 Row 中：

actions: [
          Row(
            children: <Widget>[
              Container(
                height: 60,
                width: 60,
                child: CircleAvatar(
                  backgroundImage:
                      NetworkImage("https://picsum.photos/500/300"),
                  maxRadius: 15,
                  minRadius: 15,
                ),
              ),
            ],
          ),
        ],

结果：

为什么我无法在 Flutter 中更改 AppBar 中 CircleAvatar 或其他圆形小部件的高度？

Why I can't change the height of CircleAvatar or other circular widgets in AppBar in Flutter?

flutter

flutter-layout

flutter-appbar