Can't increase the width of an dialog box in flutter

Question

I need to build a pop up dialog box in my app. I am using Dialog class and wrapped it with SizedBox class to increase the width of the dialog box. But, the width of the dialog box is not increasing. How can I increase the width of it? onTap: () { showDialog( context: context, child:SizedBox( width: 900, child: Dialog( backgroundColor :Colors.white, insetAnimationDuration: const Duration(milliseconds: 10), shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20)), child: Container( child: Column( children: [ Text('hello'), FlatButton( onPressed: () { Navigator.of(context).pop(); }, child: new Text("OK"), ), ] ), ), ), ), ); }, Run code snippetExpand snippet JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

try this `showDialog( context: context, builder: (context) { return Dialog( backgroundColor: Colors.white, insetAnimationDuration: const Duration(milliseconds: 100), shape: RoundedRectangleBorder( borderRadius: BorderRadius.circular(20)), child: Container( // use container to change width and height height: 200, width: 400, child: Column( children: [ Text('hello'), FlatButton( onPressed: () { Navigator.of(context).pop(); }, child: new Text("OK"), ), ], ), ), ); }, );` here i have replaced child parameter of showDialog with builder as it is deprecated and with dailogs , It is margined from screen boundaries. So if you want dailog to fit whole screen it can't But if widder screen or is in landscape so width can be changed to a limit