flutter 之生命周期监听WidgetsBindingObserver

class _MyHomePageState extends State<MyHomePage> with WidgetsBindingObserver

 

 

@override
void didChangeAppLifecycleState(AppLifecycleState state) {
  // TODO: implement didChangeAppLifecycleState
  super.didChangeAppLifecycleState(state);
         switch(state){
           case AppLifecycleState.inactive :
             print("===========${AppLifecycleState.inactive}");
             break;
           case AppLifecycleState.resumed:
             print("===========${AppLifecycleState.resumed}");
             break;
           case AppLifecycleState.paused:
             print("===========${AppLifecycleState.paused}");
             break;
           case AppLifecycleState.detached:
             print("===========${AppLifecycleState.detached}");
             break;
         }

}