flutter - 图像在 flutter 中放大为 CircleAvatar 小部件

Question

我正在尝试在 CircleAvatar 小部件的下拉列表中显示这些头像。但是，如下图所示，该图像在 CircleAvatar 中不合适。我尝试裁剪它们并更改大小，但它仍然放大了图像。任何帮助，将不胜感激。下面是我用来在下拉列表中显示的头像列表的代码。

   List<AvatarItem> avatars = <AvatarItem>[
    const AvatarItem(avatarString: 'female_avatar_1.png', avatar: Center(
      child: Padding(
        padding: const EdgeInsets.all(3.0),
        child: CircleAvatar(backgroundImage: AssetImage('assets/female_avatar_1.png'), backgroundColor: Colors.white, radius: 30.0,),
      ),
    )),
    const AvatarItem(avatarString: 'male_avatar_1.png', avatar: Center(
      child: Padding(
        padding: const EdgeInsets.all(3.0),
        child: CircleAvatar(backgroundImage: AssetImage('assets/male_avatar_1.png'), backgroundColor: Colors.white, radius: 30.0,),
      ),
    )),
    const AvatarItem(avatarString: 'female_avatar_2.png', avatar: Center(
      child: Padding(
        padding: const EdgeInsets.all(3.0),
        child: CircleAvatar(backgroundImage: AssetImage('assets/female_avatar_2.png'), backgroundColor: Colors.white, radius: 30.0,),
      ),
    )),
    const AvatarItem(avatarString: 'male_avatar_2.png', avatar: Center(
      child: Padding(
        padding: const EdgeInsets.all(3.0),
        child: CircleAvatar(backgroundImage: AssetImage('assets/male_avatar_2.png'), backgroundColor: Colors.white, radius: 30.0,),
      ),
    )),
    const AvatarItem(avatarString: 'gn_avatar.png', avatar: Center(
      child: Padding(
        padding: const EdgeInsets.all(3.0),
        child: CircleAvatar(backgroundImage: AssetImage('assets/gn_avatar.png'), backgroundColor: Colors.white, radius: 30.0,),
      ),
    )),
  ];

Answer 1

我遇到了同样的问题，只是根据评论找到了答案。这是我使用 FittedBox(也带有 BoxDecoration 边框)的类似示例代码，供其他需要的人使用 :)

return Container(
  child: FittedBox(
    fit: BoxFit.contain,
    child: CircleAvatar(
      radius: 60,
      backgroundImage: AssetImage('assets/images/$image'),
    ),
  ),
  decoration: BoxDecoration(
    shape: BoxShape.circle,
    border: Border.all(
      color: Colors.pinkAccent.withOpacity(0.80),
      width: 6,
    ),
  ),
);