createTicker method

@override @protected Ticker createTicker(TickerCallback onTick)

Creates a ticker with the given callback.

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

Implementation

@override
@protected
Ticker createTicker(TickerCallback onTick) {
  _ticker = Ticker(
    onTick,
    debugLabel: kDebugMode ? 'created by ${describeIdentity(this)}' : null,
  );
  // We assume that this is called from initState, build, or some sort of
  // event handler, and that thus TickerMode.of(context) would return true. We
  // can't actually check that here because if we're in initState then we're
  // not allowed to do inheritance checks yet.
  return _ticker!;
}