createTicker method Null safety

  1. @override
Ticker createTicker(
  1. TickerCallback onTick
)
override

Creates a ticker with the given callback.

The kind of ticker provided depends on the kind of ticker provider.

Implementation

@override
Ticker createTicker(TickerCallback onTick) {
  _tickers ??= <_WidgetTicker>{};
  final _WidgetTicker result = _WidgetTicker(onTick, this, debugLabel: kDebugMode ? 'created by ${describeIdentity(this)}' : null);
  _tickers!.add(result);
  return result;
}