You can start learning from flutter.dev . There are many ways to do this. I am using Container with decoration
Container(
height: 70,
width: 70,
padding: EdgeInsets.all(10), //spacing using padding
decoration: BoxDecoration(
shape: BoxShape.circle,
border: Border.all(width: 5, color: Colors.blue),
),
child: const Material( //inner circle
color: Colors.green,
shape: CircleBorder(),
),
)
More about Container
.
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