You can use [Future.delayed][1] to run your code after some time. e.g.:
Future.delayed(const Duration(milliseconds: 500), () { // Here you can write your code setState(() { // Here you can write your code for open new view }); });
In `setState` function, you can write a code which is related to app UI e.g. refresh screen data, change label text, etc.

[1]: https://api.flutter.dev/flutter/dart-async/Future/Future.delayed.html

You need to add Some delay , In this Delay you can show a loading icon . for delay you can use :

Future.delayed(const Duration(milliseconds: 500), () { // Here you can write your code setState(() { // Here you can write your code for open new view }); });
This will solve your problem