flutter Row图标和字体老是对不齐

flutter 图标和字体老是对不齐

Row(
      crossAxisAlignment: CrossAxisAlignment.center,
      children: [
        Icon(Icons.add),
        Text(
          title,
          style: TextStyle(fontSize: 15.sp, fontWeight: FontWeight.bold),
        )]

图标和文字对不齐，图标稍微往下了

设置了字体的基线

图标和文字完全垂直居中对齐