Two screen movements are being done through pushReplacementNamed.
Navigator.pushReplacementNamed(context, '/screen_b');
Navigator.pushReplacementNamed(context, '/screen_a');
What I want is that the animation behaves in reverse when the screen to screen_b goes back to screen_a.
Now it keeps moving in only one direction. (From right to left)
I am wondering if there is a way other than push and pop.
use CupertinoPageRoute
Navigator. pushReplacementNamed(
context,
CupertinoPageRoute(
builder: (context) => yourpage(),
));
To achieve that you need to use the following in scree_a:
Navigator.pushNamed(context, '/screen_b');
In screen_b you need just pop if you want the back ainmation:
Navigator.pop(context);
And when you create your route, use CupertinoPageRoute:
CupertinoPageRoute(
builder: (_) => ScreenA/B())
Related
I have three screens: 1, 2, and 3.
I want to switch from screen 2 to screen 3, but when I pop screen 2 and push screen 3, then it shows screen 1 for a while, then it shows screen 3, so is there any way to switch screens using pop after push or not?
this code not expectations
Navigator.push(
context,
MaterialPageRoute<Widget>(
builder: (context) => widget,
),
);
Navigator.pop(context);
Using pushReplacement insted of push
Navigator.pushReplacement(
context,
MaterialPageRoute<Widget>(
builder: (context) => widget,
),
);
Using pushReplacement insted of push
Navigator.pushReplacement(
context,
MaterialPageRoute(
builder: (context) => widget,
),
);
The behavior you're describing is likely because when you call Navigator.pop(context), it removes the current screen (screen 2) from the navigation stack, but the framework hasn't yet had a chance to build and display the new screen (screen 3) that you pushed. So, for a brief moment, the previous screen (screen 1) is visible.
One way to switch screens without that flicker is to use Navigator.pushReplacement instead of Navigator.push followed by Navigator.pop. Navigator.pushReplacement removes the current screen from the navigation stack and replaces it with the new screen, all in one step.
Example:
Navigator.pushReplacement(
context,
MaterialPageRoute<Widget>(
builder: (context) => widget3,
),
);
This will directly switch from screen 2 to screen 3.
It is generally not recommended to use both Navigator.push() and Navigator.pop() together in the same function call, as this can cause unexpected behavior. Instead, you can use Navigator.replace() to replace the current screen with a new one, or use Navigator.pushNamedAndRemoveUntil() to push a new screen and remove all the screens that come before it.
I have seen many examples but none of them providing me a way to remove the entire back stack(including the home page) while navigating to the next page.
Eg: I have a few login pages once a user successfully entered login credentials user move to the home screen, so here I want to remove all previous screen which appeared till now, How can I do that?
Currently using code:
Navigator.of(context).pushNamedAndRemoveUntil(
HomeScreen.route_name, ModalRoute.withName('/'));
To remove all the routes below the pushed route, use a RoutePredicate that always returns false (e.g. (Route route) => false).
So for your code to work as expected, remove ModalRoute.withName('/') and give a route predicate which returns false. So it should be
Navigator.of(context).pushNamedAndRemoveUntil(
HomeScreen.route_name, (Route<dynamic> route)=>false);
For reference see the official documentation
Try this out. This code push the given route onto the navigator and then remove all the previous routes even HomeScreen.
Navigator.pushAndRemoveUntil(
context,
MaterialPageRoute(
builder: (BuildContext context) => HomeScreen(),
),
(route) => false,
);
Note: This is tested on my project. So I hope it will 100% work
Try this way
Navigator.pushAndRemoveUntil(
context,
MaterialPageRoute(builder: (dialogContex) => HomePageScreen()),
ModalRoute.withName("/HomePageScreen"));
or with Getx:
Get.offNamedUntil('home', (route) => false);
I have created NavigationDrawer in flutter before navigation drawer screen appear to user I have 3 screen before it
splash screen
intro slider
Login screen
NavigationDrawer
I want to close my app when user press back button in android phone from navigationdrawer screen but it will shows black screen.
I have called below called for navigation from login to drawer
Navigator.pushAndRemoveUntil(
context,
MaterialPageRoute(
builder: (BuildContext context) => NavigationDrawerDemo(),
),
ModalRoute.withName('/LoginFieldForm'));
I called loginfieldform with
Navigator.push(context,
new MaterialPageRoute(builder: (context) =>new LoginFieldForm()));
I think you have pushed the "LoginFieldForm" with the Navigator.push method and trying to remove it using the named routes.
For Ex :
// Puching a route with Navigator.push method
Navigator.push(
context,
MaterialPageRoute(builder: (context) => LoginFieldForm()),
);
// Removing using the named routes.
Navigator.pushAndRemoveUntil(
context,
MaterialPageRoute(
builder: (BuildContext context) => NavigationDrawerDemo(),
),
ModalRoute.withName('/LoginFieldForm'));
You can only use ModalRoute.withName() if you have added the route using named routes.
Your route probably has not a name set. If so, popping until the name is matched will result in popping everything, since the name you're looking for will never be found.
When you push LoginFieldForm ensure to pass a settings to the Route.
When pushing, you can do this:
MaterialPageRoute(
settings: RouteSettings(name: "routeName"),
builder: (context) => YourWidget(),
)
If you're within onGenerateRoute you already have settings passed as an argument to the onGenerateRoute function. In that case, just forward them to the MaterialPageRoute:
MaterialPageRoute(
settings: settings, //these settings are arguments from the function
builder: (context) => YourWidget(),
)
To close the app you may use exit(0) of dart:io on back press.exit(0) help out to Exit the Dart VM process immediately with the given exit code.
This does not wait for any asynchronous operations to terminate. You may find more information about exit(0) here
Or
SystemChannels.platform.invokeMethod('SystemNavigator.pop');
For more detail you may check here
Use-case: pushNamedAndRemoveUntil
Navigator.of(context).pushNamedAndRemoveUntil('/LoginFieldForm',
(Route<dynamic> route) => false);
How to do a modal presentation of a route in Flutter?
I figured out how to navigate to a route using the usual "push" transition, but I am struggling to implement a modal transition. See animation attached (done using native iOS). How do I present a screen modally (a screen that itself can be pushed more screens to).
See an example below. The transition I am struggling with is from "A" to "C" (and of course a way to dismiss it and go back to "A").
You can push like this:
Navigator.of(context).push(
CupertinoPageRoute(
fullscreenDialog: true,
builder: (context) => SomePage(),
),
);
Hope this helps.
Go to Section B(push) animation can be achieved by following:
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => SectionBRoute()),
);
Go to Section C(present modally) animation can be achieved by following:
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => SectionCRoute(), fullscreenDialog: true),
);
I'm implementing an authentication flow in my Flutter app.
After a sign in attempt, the CheckAuth (which checks whether a user is signed in or not and then opens home screen or sign up screen accordingly) is opened with this code:
void _signIn() async {
await _auth
.signInWithEmailAndPassword(
email: _userEmail.trim(), password: _userPassword.trim())
.then((task) {
// go to home screen
if (task.getIdToken() != null) {
setState(() {
Navigator.pushReplacement(
context,
new MaterialPageRoute(
builder: (BuildContext context) => new CheckAuth()));
});
} else {
print("Authentication failed");
}
});
}
Problem: I can successfully sign in to the app, but if I tap back button after I sign in, it goes back to the sign in screen (while I expect it to exit from the app).
Question: How to move from one screen to another in Flutter without the way back?
Do I need to somehow delete the navigator history? Or don't use navigator at all? I tried Navigator.replace method, but it didn't seem to work.
You need to use Navigator.pushReplacement when leaving the auth screen too. Not just when redirecting to login page.
You can use the pushAndRemoveUntil method:
Push the given route onto the navigator that most tightly encloses the given context, and then remove all the previous routes until the predicate returns true. To remove all the routes below the pushed route, use a [RoutePredicate] that always returns false (e.g. (Route<dynamic> route) => false).
Navigator.pushAndRemoveUntil(
context,
MaterialPageRoute(builder: (context) => MainPage()),
(Route<dynamic> route) => false,
);
You need to use
Navigator
.of(_context)
.pushReplacement(new MaterialPageRoute(builder: (BuildContext context) => page));
Where _context is object of BuildContext
And page is which page you directed to.
I think you probably have already solved this. But you can set "automaticallyLeadingImplied: false" in the AppBar of the Scaffold you are navigating to.
Just simply add the below code:
Navigator.of(context).pushNamedAndRemoveUntil('/routeName', (route) => false);
We can use routes for the same
Like:
routes: {
LoginScreen.route_name: (_) => LoginScreen(),
.....
},
And use below code whenever you want to push and remove the backstack
Navigator.of(context).pushReplacementNamed(LoginScreen.route_name);
Note: Define static String inside widget LoginScreen
I have resolved this by popping from current page and showing new page:
Navigator.pop(context);
Navigator.of(context).pushReplacement(MaterialPageRoute(builder: (context) => newPage));
Here is the solution -
Use pushAndRemoveUntil instead of pushReplacement
Also, can be use maintainState: true
For set root page
Navigator.pushAndRemoveUntil(
context,
MaterialPageRoute(
builder: (context) => pageName, maintainState: true),
(Route<dynamic> route) => false);
For Push Page one page to another
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => pageName,
maintainState: false),)
**If you want to refresh always while appearing page then use: **
maintainState: false
For anyone wondering there is a new argument that needs to be returned false Navigator.of(context).pushNamedAndRemoveUntil('/', (route) => false);
Navigator.of(context, rootNavigator: true).pop();
Navigator.pushNamed(context, '/');
It was not working for me because I was using the home proptery rather than initialRoute on the MaterialApp.
This is a link where there's the folloing warning which helped me to spot the error: https://docs.flutter.dev/cookbook/navigation/named-routes#2-define-the-routes
Warning: When using initialRoute, don’t define a home property.
if you are working with Getx state managemaent then you can try this
Get.of(()=> NewPage());