Flutter中引入ScreenUtil实现不同终端屏幕适配方案 引入依赖 flutter_screenutil: ^5.9.0 自定义适配类 import 'package:flutter_screenutil/flutter_screenutil.dart'; class ScreenAdapter{ static width(num v){ return v.w; } static height(num v){ return v.h; } static fontSize(num v){ return v.sp; } static getScreenWidth(num v){