vsync property
A TickerProvider to use when animating the scroll position.
Implementation
TickerProvider? get vsync => _vsync;
Implementation
set vsync(TickerProvider? value) {
if (value == _vsync) {
return;
}
_vsync = value;
if (value == null) {
_controller?.dispose();
_controller = null;
} else {
_controller?.resync(value);
}
}