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rakesh kumar
rakesh kumar

Posted on

How can I make alertDialog disappear automatically after few seconds in Flutter

** Solution:**
Future.delayed(Duration(seconds: 1), () {
Navigator.of(context).pop(true);
});
Image description

It Closes the alertDialog after 5 seconds

.

      showDialog(
                      context: context,
                      builder: (context) {
                        Future.delayed(Duration(seconds: 5), () {
                          Navigator.of(context).pop(true);
                        });
                        return AlertDialog(
                          title: Text('Title'),
                        );
                      });
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Future.delayed can cause some problems if you dismiss the dialog before the Future is triggered. So, if you use it be careful that the showDialog is not dismissable barrierDismissible: false and that the AlertDialog hasn't buttons that dismiss it.

Otherwise, you can use a Timer:

Timer timer = Timer(Duration(milliseconds: 3000), (){
  Navigator.of(context, rootNavigator: true).pop();
});
showDialog(
  ... Dialog Code ...
).then((value){
  // dispose the timer in case something else has triggered the dismiss.
  timer?.cancel();
  timer = null;
});
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You might want to use a 'SnackBar' to show notice that disappears automatically.

final snackBar = SnackBar(
  content: Text('This is where you put the notice.'),
  duration: Duration(seconds: 2),
);
Scaffold.of(context).showSnackBar(snackBar);
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Refrence1

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