Flutter Create a Rounded Container with a gradient border

ValerianaGitđź’™ - Apr 30 '21 - - Dev Community

Recognition where it is due. I got most of this approach from Ankit Dubey from stackOverflow. Though I added how to round the circle. If you find this helpful, please head over to his answer in stackOverflow and upvote him. Here

Your constants file

final kInnerDecoration = BoxDecoration(
color: Colors.white,
border: Border.all(color: Colors.white),
borderRadius: BorderRadius.circular(32),
);
// border for all 3 colors
final kGradientBoxDecoration = BoxDecoration(
gradient: LinearGradient(
colors: [Colors.yellow.shade600, Colors.orange, Colors.red]),
border: Border.all(
color: Colors.amber, //kHintColor, so this should be changed?
),
borderRadius: BorderRadius.circular(32),
);

Your Widget

`ClipOval(
           clipBehavior: Clip.antiAlias,
           child: Container(
             child: Padding(
               padding: const EdgeInsets.all(8.0), //width of the border
               child: ClipOval(
                 clipBehavior: Clip.antiAlias,
                 child: Container(
                   width:
                       240.0, // this width forces the container to be a circle
                   height:
                       240.0, // this height forces the container to be a circle
                   child: Text(
                     "12",
                     style: TextStyle(
                       fontSize: 200.0,
                     ),
                     textAlign: TextAlign.center,
                   ),
                   decoration: kInnerDecoration,
                 ),
               ),
             ),
             decoration: kGradientBoxDecoration,
           ),
         ),`
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Here is your end result
Alt Text

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