GestureRecognizer constructor Null safety
- {Object? debugOwner,
- @Deprecated('Migrate to supportedDevices. ' 'This feature was deprecated after v2.3.0-1.0.pre.') PointerDeviceKind? kind,
- Set<
PointerDeviceKind> ? supportedDevices}
Initializes the gesture recognizer.
The argument is optional and is only used for debug purposes (e.g. in the toString serialization).
It's possible to limit this recognizer to a specific set of PointerDeviceKinds
by providing the optional supportedDevices
argument. If supportedDevices
is null,
the recognizer will accept pointer events from all device kinds.
Implementation
GestureRecognizer({
this.debugOwner,
@Deprecated(
'Migrate to supportedDevices. '
'This feature was deprecated after v2.3.0-1.0.pre.',
)
PointerDeviceKind? kind,
Set<PointerDeviceKind>? supportedDevices,
}) : assert(kind == null || supportedDevices == null),
_supportedDevices = kind == null ? supportedDevices : <PointerDeviceKind>{ kind };