ProgressRing constructor
const
ProgressRing({})
Creates progress ring.
value, if non-null, must be in the range of 0 to 100
strokeWidth must be equal or greater than 0
Implementation
const ProgressRing({
Key? key,
this.value,
this.strokeWidth = 4.5,
this.semanticLabel,
this.backgroundColor,
this.activeColor,
}) : assert(value == null || value >= 0 && value <= 100),
super(key: key);