I want to showDialog when a page pushed. So I showDialog in it's initState:
class _Page2State extends State<_Page2> {
@override
void initState() {
super.initState();
_showDialog(context: context);
}
@override
Widget build(BuildContext context) {
return Scaffold(
body: Container(color: Colors.red),
);
}
}
void _showDialog({required BuildContext context}) {
showCupertinoModalPopup(
context: context,
builder: (context) {
return Container(
width: 300,
height: 100,
color: Colors.green,
);
},
);
}
No surprise, error showed:
dependOnInheritedWidgetOfExactType<_InheritedCupertinoTheme>() or dependOnInheritedElement() was called before _Page2State.initState() completed.
To solve it, I changed code:
@override
void initState() {
super.initState();
WidgetsBinding.instance?.addPostFrameCallback((timeStamp) {
_showDialog(context: context);
});
}
It works. But I wonder is there any more elegant way?
