- override
If the route's transition can be popped via a user gesture (e.g. the iOS back gesture), this should return a controller object that can be used to control the transition animation's progress. Otherwise, it should return null.
Source
@override
NavigationGestureController startPopGesture(NavigatorState navigator) {
if (controller.status != AnimationStatus.completed)
return null;
assert(_backGestureController == null);
_backGestureController = new _CupertinoBackGestureController(
navigator: navigator,
controller: controller,
onDisposed: () { _backGestureController = null; }
);
return _backGestureController;
}