I want to constantly check if scrolling is not possible.
@override
void initState() {
super.initState();
WidgetsBinding.instance!.addPostFrameCallback((duration) {
print("${_scrollViewController.position.maxScrollExtent}");
// prints true if scrollable else false
print("isScrollable = ${_scrollViewController.position.maxScrollExtent != 0}");
});
}
I've tried this code, but it's only detected once and not continuously. What should I do?
Use NotificationListener
widget.
example:
NotificationListener<ScrollNotification>(
child: ListView(
children: MyListChilren()),
onNotification: (ScrollNotification scrollNotif) {
print(scrollNotif.metrics.maxScrollExtent);
},
);