LifecycleObserver class
Inheritance
Mixed in types
Properties
hashCode → int
The hash code for this object.
no setter inherited
navigator → NavigatorState ?
The navigator that the observer is observing, if any.
no setter inherited
runtimeType → Type
A representation of the runtime type of the object.
no setter inherited
Methods
didChangeAccessibilityFeatures ()
→ void
Called when the system changes the set of currently active accessibility
features.
inherited
didChangeAppLifecycleState (AppLifecycleState state → void
Called when the system puts the app in the background or returns
the app to the foreground.
override
didChangeLocales (List <Locale ?locales → void
Called when the system tells the app that the user's locale has
changed. For example, if the user changes the system language
settings.
inherited
didChangeMetrics ()
→ void
Called when the application's dimensions change. For example,
when a phone is rotated.
inherited
didChangePlatformBrightness ()
→ void
Called when the platform brightness changes.
inherited
didChangeTextScaleFactor ()
→ void
Called when the platform's text scale factor changes.
inherited
didHaveMemoryPressure ()
→ void
Called when the system is running low on memory.
inherited
didPop (Route route , Route ?previousRoute → void
The Navigator popped route.
override
didPopRoute ()
→ Future <bool
Called when the system tells the app to pop the current route, such as
after a system back button press or back gesture.
inherited
didPush (Route route , Route ?previousRoute → void
When boot first page, previousRoute is null.
override
didPushRoute (String route → Future <bool
Called when the host tells the application to push a new route onto the
navigator.
inherited
didPushRouteInformation (RouteInformation routeInformation → Future <bool
Called when the host tells the application to push a new
RouteInformation and a restoration state onto the router.
inherited
didRemove (Route route , Route ?previousRoute → void
route Route that will be removed.
previousRoute A route below the removed route. When removing
multiple routes, the previousRoute is unchanged, and may be null.
override
didReplace ({Route ?newRoute , Route ?oldRoute → void
The Navigator replaced oldRoute with newRoute.
override
didRequestAppExit ()
→ Future <AppExitResponse
Called when a request is received from the system to exit the application.
inherited
didStartUserGesture (Route route , Route ?previousRoute → void
The Navigator 's routes are being moved by a user gesture.
inherited
didStopUserGesture ()
→ void
User gesture is no longer controlling the Navigator .
inherited
dispose ()
→ void
Must be called when the observer will no longer be used.
findRoute (String routeName → Route ?
Finds route by routeName.
iterateRoutes (bool callback (Route route → void
Iterates routes. It's usually used for locating a specific route.
callback The callback function to be called for each route.
Returns true to break the iteration.
noSuchMethod (Invocation invocation → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
removeNamed <T > (String routeName , [T? result → void
Remove a route according to the routeName.
removeRoute <T > (Route route , [T? result → void
Removes a route.
subscribe (LifecycleAware lifecycleAware , Route route → void
lifecycleAware subscribes events.
toString ()
→ String
A string representation of this object.
inherited
unsubscribe (LifecycleAware lifecycleAware → void
lifecycleAware unsubscribes events.
