I have used ScreenUtilInit() in my flutter application. In that designSize: Size(360, 690) or designSize:ScreenUtil.defaultSize, what should I put. And what is advantages in both?

CodePudding user response：

You can get the size of your actual displayable widget with MediaQuery class.

double card_width = MediaQuery.of(context).size.width * 15 / 16;

double card_height = MediaQuery.of(context).size.height / 4;

CodePudding user response：

There are two basic approaches to creating Flutter apps with responsive design:

• Use the LayoutBuilder class From its builder property, you get a BoxConstraints object

• Use the MediaQuery.of() method in your build functions This gives you the size, orientation, etc, of your current app