CupertinoActivityIndicator constructor Null safety
Creates an iOS-style activity indicator that spins clockwise.
Implementation
const CupertinoActivityIndicator({
super.key,
this.color,
this.animating = true,
this.radius = _kDefaultIndicatorRadius,
}) : assert(animating != null),
assert(radius != null),
assert(radius > 0.0),
progress = 1.0;