Flutter Get.width 或初始化 MediaQuery.of(context).size 在 Release 模式下不起作用

Question

When ı use get.width or height at first page in project or initialize like this ;

 @override
  void didChangeDependencies() {
    SizeConfig().init(context);
    super.didChangeDependencies();
  }

also SizeConfig page :

class SizeConfig {
  static late MediaQueryData _mediaQueryData;
  static late double width;
  static late double height;
  static late double blockSizeHorizontal;
  static late double blockSizeVertical;
  static late double res;

  void init(BuildContext context) {
    _mediaQueryData = MediaQuery.of(context);
    width = _mediaQueryData.size.width;
    height = _mediaQueryData.size.height;
  }

}

It is not working.

But when ı use debug mode they are working well. Yes the release mode faster than debug mode but how can we solve it?

Answer 1

Try below code

void init(BuildContext context) {
    WidgetsBinding.instance!.addPostFrameCallback((_) {
  // executes after build
_mediaQueryData = MediaQuery.of(context);
    width = _mediaQueryData.size.width;
    height = _mediaQueryData.size.height;

});
  }