How to remove default navigation route animation - flutter

Question

I am below code which given in flutter documentation for page routing
// Within the `FirstRoute` widget
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(builder: (context) => SecondRoute()),
);
}
But it provides some animation while pushing and poping route.
For Android, the entrance transition for the page slides the page
upwards and fades it in. The exit transition is the same, but in
reverse.
The transition is adaptive to the platform and on iOS, the page slides
in from the right and exits in reverse. The page also shifts to the
left in parallax when another page enters to cover it. (These
directions are flipped in environments with a right-to-left reading
direction.)
Is there any way to route to next page without any animation?
Edit:
Please check the entire code:
class MyApp extends StatelessWidget {
final routes = <String, WidgetBuilder>{
SecondRoute.tag: (context) => SecondRoute(),
};
#override
Widget build(BuildContext context) {
return MaterialApp(
title: "Flutter Routes",
home: new FirstRoute(),
routes: routes,
onGenerateRoute: (routeSettings) {
if (routeSettings.name == SecondRoute.tag)
return PageRouteBuilder(pageBuilder: (_, a1, a2) => SecondRoute());
return null;
},
);
}
}
class FirstRoute extends StatelessWidget {
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('First Route'),
),
body: Center(
child: RaisedButton(
child: Text('Open route'),
onPressed: () {
Navigator.of(context).pushNamed(SecondRoute.tag);
},
),
),
);
}
}
class SecondRoute extends StatelessWidget {
static String tag = 'second-route';
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text("Second Route"),
),
body: Center(
child: RaisedButton(
onPressed: () {
Navigator.pop(context);
},
child: Text('Go back!'),
),
),
);
}
}

Answer 1

For Navigator.push(...)
Navigator.push(
context,
PageRouteBuilder(pageBuilder: (_, __, ___) => SecondRoute()),
)
For Navigator.pushNamed(...)
First, add this to your MaterialApp
MaterialApp(
onGenerateRoute: (settings) {
if (settings.name == '/second')
return PageRouteBuilder(pageBuilder: (_, __, ___) => SecondRoute());
return null;
},
)
And now, you can use:
Navigator.pushNamed(context, '/second');

Answer 2

The animation is performed by MaterialPageRoute. If you don't want it, simple use something else:
Navigator.push(
context,
PageRouteBuilder(pageBuilder: (_, __, ___) => MyRoute()),
)

Answer 3

Replace your MyApp with this.
class MyApp extends StatelessWidget {
final routes = <String, WidgetBuilder>{SecondRoute.tag: (context) => SecondRoute()};
#override
Widget build(BuildContext context) {
return MaterialApp(
title: "Flutter Routes",
home: new FirstRoute(),
onGenerateRoute: (routeSettings) {
if (routeSettings.name == SecondRoute.tag)
return PageRouteBuilder(
pageBuilder: (_, a1, a2) => FadeTransition(opacity: a1 ,child: SecondRoute()),
transitionDuration: Duration(seconds: 5),
);
return null;
},
);
}
}

Answer 4

As Flutter is now migrating to Navigator 2.0 for increased support, I would recommend checking out their migration guide on adding a TransitionDelegate to the Navigator. Add an instance of this class to your navigator to achieve the intended result:
import 'package:flutter/widgets.dart';
class NoAnimationTransitionDelegate extends TransitionDelegate<void> {
#override
Iterable<RouteTransitionRecord> resolve({
List<RouteTransitionRecord> newPageRouteHistory,
Map<RouteTransitionRecord, RouteTransitionRecord> locationToExitingPageRoute,
Map<RouteTransitionRecord, List<RouteTransitionRecord>> pageRouteToPagelessRoutes,
}) {
final List<RouteTransitionRecord> results = <RouteTransitionRecord>[];
for (final RouteTransitionRecord pageRoute in newPageRouteHistory) {
// Renames isEntering to isWaitingForEnteringDecision.
if (pageRoute.isWaitingForEnteringDecision) {
pageRoute.markForAdd();
}
results.add(pageRoute);
}
for (final RouteTransitionRecord exitingPageRoute in locationToExitingPageRoute.values) {
// Checks the isWaitingForExitingDecision before calling the markFor methods.
if (exitingPageRoute.isWaitingForExitingDecision) {
exitingPageRoute.markForRemove();
final List<RouteTransitionRecord> pagelessRoutes = pageRouteToPagelessRoutes[exitingPageRoute];
if (pagelessRoutes != null) {
for (final RouteTransitionRecord pagelessRoute in pagelessRoutes) {
pagelessRoute.markForRemove();
}
}
}
results.add(exitingPageRoute);
}
return results;
}
}

Answer 5

aidan marshal's solution is simple and works fine but there some adjustments in his code
import 'package:flutter/widgets.dart';
class NoAnimationTransitionDelegate extends TransitionDelegate<void> {
#override
Iterable<RouteTransitionRecord> resolve({
required List<RouteTransitionRecord> newPageRouteHistory,
required Map<RouteTransitionRecord?, RouteTransitionRecord>
locationToExitingPageRoute, required Map<RouteTransitionRecord?,
List<RouteTransitionRecord>> pageRouteToPagelessRoutes}) {
{
final List<RouteTransitionRecord> results = <RouteTransitionRecord>[];
for (final RouteTransitionRecord pageRoute in newPageRouteHistory) {
// Renames isEntering to isWaitingForEnteringDecision.
if (pageRoute.isWaitingForEnteringDecision) {
pageRoute.markForAdd();
}
results.add(pageRoute);
}
for (final RouteTransitionRecord exitingPageRoute in locationToExitingPageRoute.values) {
// Checks the isWaitingForExitingDecision before calling the markFor methods.
if (exitingPageRoute.isWaitingForExitingDecision) {
exitingPageRoute.markForRemove();
final List<RouteTransitionRecord>? pagelessRoutes = pageRouteToPagelessRoutes[exitingPageRoute];
if (pagelessRoutes != null) {
for (final RouteTransitionRecord pagelessRoute in pagelessRoutes) {
pagelessRoute.markForRemove();
}
}
}
results.add(exitingPageRoute);
}
return results;
}
}
}