Flutter 设置字体与设备缩放比例

@override
  Widget build(BuildContext context) {
    return MaterialApp(
      navigatorKey: widget.globalRouteKey,
      theme: ThemeData(
        primaryColor: Colors.yellow,
        accentColor: Colors.amber,
        highlightColor: Color.fromRGBO(255, 255, 255, 0.6),
        // 水波纹颜色
        splashColor: Colors.yellow,
        fontFamily: 'Roboto',
      ),
      //是否取消右上角的DEBUG标签
      debugShowCheckedModeBanner: false,
      onGenerateRoute: MyRouter.Router.fluroRouter.generator,
      //是否显示性能调试
      showPerformanceOverlay: false,
        builder: (context, widget) {
          return MediaQuery(
            //设置文字大小比例
            data: MediaQuery.of(context).copyWith(textScaleFactor: 0.9),
            child: widget,
          );
        },
    );
  }