flutter ViewWillAppear
當(dāng)需要和ios開發(fā)使用頁(yè)面的生命周期時(shí)，flutter 并沒有viewwillappear等方法或者相似的狀態(tài)管理
//添加監(jiān)測(cè)
WidgetsBinding.instance.addObserver(this);
@override
void didChangeAppLifecycleState(AppLifecycleState state) {
super.didChangeAppLifecycleState(state);
switch (state) {
case AppLifecycleState.resumed:
// TODO: Handle this case.
break;
case AppLifecycleState.inactive:
// TODO: Handle this case.
break;
case AppLifecycleState.paused:
// TODO: Handle this case.
break;
case AppLifecycleState.detached:
// TODO: Handle this case.
break;
}
}
@override
void dispose() {
// TODO: implement dispose
WidgetsBinding.instance.removeObserver(this);
super.dispose();
}
