guys.
I'm having some trouble with TextFormFields on my app.
I've got Login screen with Form widget, that works pretty fine, i can put login and password and then do the login.
But after login every TextFormfFeld that i tap to write some words the keyboard appears and then the app crashes and moves back to HomeScreen.
each Form widget has its own Global Key, I don't know why this behavior is occurring.
Things that I've tried:
create a static GlobalKey, but when I do this an error is displayed saying that I'm using a unique global key in too many widgets.
Related
So lets say I have 3 Pages : [StartingPage, NamePage, AdressPage] inside a PageView.
Each of those children has a TextFormField inside it.
When I am at StartingPage I want to call .validate() on the keys of the TextFormFields on NamePage and AdressPage and I want the errorLabels to show, when the user navigates to the other pages. The problem is that currently, the validation only works for the TextFormFields that are on screen.
So basically there are two questions:
Is it possible to pre-build pages of a pageview? Otherwise when I call formFieldKey.currentState the state is null if I haven't navigated to the respective page.
Is there another way to validate offscreen TextFormField content and show the errorlabel, when they come into view?
Unfortunately Flutter Dosen't Support Multi-Page Forms So You Need To Implement Advanced State Management To Make This Happen.
I Used Riverpod To Create a 4 Page Form By Creating A Form Key For Every Page And Saving The State of the Forms, This Way Every Form Will keep Its State Until You Dispose Of it, Hope This Helped.
I'am working on a flutter application where the user clicks on register button and if input has errors i don't wanna show the errors below the TextFormField, i've managed to create a form with a GlobalKey and added validator and it's working fine but i'm looking to show errors at the end of page not under TextFormField, any ideas how to do that ?
Thanks in advance
you can use visible widget to show your error text on error with a bool val to
validate your textfields.
I'm currently developing a flutter app on windows desktop and I want to make a navigation child in the same scaffold, i'm tried with PageTransitionSwitcher from animations package, but i'm get failed, how could do this?. thanks
This is an example
This is another example
You can do this by passing a widget to scaffold on a particular button press, Suppose you want to show Sign in and Sign Up in the same Scaffold their must be two buttons one with the name of Signin and one with the name of sign up so what you can do you can pass SIGNIN Widget on Signin Press while you can passs SignUp Widget on Signup Button Press in the same scaffold That's all.
I want to take confirmation from user before leaving the app, ideally when clicked on default system back navigation button and at time my navigation stack is empty.
Suppose I am on my homepage after login, and when I try to go back instead of returning me to login page it should show a pop up dialog. And based on the selection either close the app or leave it open.
wrap your home screen widget with WillPopScope widget and inside onWillPop callback write show your dialog and take action based on user's choice
I am trying to show a SnackBar that appears regardless of where in the app I am. I did set up and GlobalKey on my root Scaffold, and I am able to call it to show a snackbar from anywhere in my code BUT since I am inside other Scaffolds, it does not show on these pages. The only way to view it is to pop the routes and go back to the main screen, where the root Scaffold is.
Is there any way I could show a SnackBar that's above every single widget?
This I am trying to do to be able to show a message for notifications received when the app is in foreground