How can I have widget sizes relative to the screen size in flutter?
4,676
You can use the BuildContext context
with a MediaQuery
to find out the current devices screen size. For example:
var width = MediaQuery.of(context).size.width * 0.4; // set width to 40% of the screen width
var height = MediaQuery.of(context).size.height * 0.4; // set height to 40% of the screen height
Author by
Young
Updated on December 08, 2022Comments
-
Young over 1 year
I was building a flutter app. In there I made a SliverAppBar:
child: NestedScrollView ( headerSliverBuilder: (BuildContext context, i) { return <Widget> [ SliverAppBar ( backgroundColor: Colors.black, expandedHeight: 150.0, ) ]; },
I made the height to 150.0 px. But I realized that this size will change in different devices. How can I make the size take up 40% of the screen in every device?
-
anmol.majhail over 5 yearsUse Media Query to get screen size - docs.flutter.io/flutter/widgets/MediaQueryData/size.html
-