initState method
是否可见
Implementation
bool isResume=false;///是否可见
@override
void initState() {
super.initState();
isDispose=false;
isPause=false;
isResume=false;
tag=W.toString();
onStart();
WidgetsBinding? widgetsBinding = WidgetsBinding.instance;
widgetsBinding?.addObserver(this);
}