flutter 展示自定义图标

参考：

• Flutter Icon、ImageIcon、IconButton参数详解
• Flutter控件之Text

展示图片：
需要在pubspec.yaml里进行配置

# 图片资源文件
  assets:
   - assets/images/abc.png
  - assets/images/xxx

在代码里使用

AssetImage('assets/images/abc.png')

Icon | ImageIcon| IconButton

使用sdk自带的Icon

Icon(Icons.home)

使用自定义的图片Icon

IconButton iconButton = IconButton(
            icon: Image.asset('assets/images/abc.png'),
            padding: EdgeInsets.all(3),
            iconSize: 25.0,
            onPressed: null,
          );

ImageIcon imageIcon = ImageIcon(
                AssetImage('assets/images/abc.png'),
                size: 25.0,
color: Colors.blue)
);