Questions tagged [scrollcontroller]
55 questions
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Failed assertion: line 108 pos 12: '_positions.length == 1': ScrollController attached to multiple scroll views
I am trying the code which I have attached below. But there I am facing the issue like Failed assertion: line 108 pos 12: '_positions.length == 1': ScrollController attached to multiple scroll views.
CustomScrollView(
controller: scrollController,…
Vasanthan Raj
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Does scrollController listener slow down flutter Scrolling effect?
I am using CustomScrollView and A Listener to listen to the scrolling effect. And from this effect, I am changing the offset of my AppBar background.
But I figure out a problem if I then use it on a screen that has huge data on it on HomeScreen…
Md. Al-Amin
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Flutter: how can I attach an INTERACTIVE Scrollbar to ScrollablePositionedList?
I want to add a Scrollbar to my ScrollablePositionedList (it's like a ListView, that let's you scroll do a specific child index on demand, from this package).
The Scrollbar displays correctly, and also updates it's position when I scroll up/down.…
Cedric
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How to trigger lazy loading function before user reaches scrollController.position.maxScrollExtent?
The result I want to achieve, is to trigger a lazy loading function before user reaches scrollController.position.maxScrollExtent, so in that way I will "minimize" the waiting time in the eyes of user.
In my case, I want the lazy loading function to…
arg0nath
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Flutter Prevent a ScrollController from scrolling for a given number of pixels
Flutter's DraggableScrollableSheet Widget allows a sheet to be dragged into position and then continue scrolling the content without the user needing to start a new gesture (lift their finger from the screen).
This Widget however relies on a single…
Walrus
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ScrollController doesn't scroll ListView to bottom + AnimatedContainer doesn't work
I have a list of report items.
I initialised a scrollController here:
class ReportList extends StatelessWidget {
ReportList({Key? key}) : super(key: key);
final ScrollController scrollController = ScrollController();
scrollDown() {
…
Kamand Shayegan
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Flutter : scrollController.isAttached is always false
How can I scroll to a special widget in a ListView? For example, I want to automatically scroll to some container in ListView if I press a certain button on a previous screen. I will pass to the next screen an Id (from id I will know the index) and…
Ghina Sharaf
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how to access to ScrollControll of a class from another class in flutter?
Hello i`m new in flutter.
I made a special listView for myself and made a controller for it.
In the main page, I have called my own list view and I have a button that I want to execute the following method by pressing it from the Main class and my…
seyyed javad
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The argument type 'RenderObject?' can't be assigned to the parameter type 'RenderObject' because 'RenderObject?' is nullable and 'RenderObject' isn't
I am creating a web with Flutter web and I would like to implement a button that automatically scrolls the view down to a certain widget. For this I am using a scroll controller and a global key
ScrollController _scrollController =…
JAgüero
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How to Scroll multiple scroll of same Controller at once with sync to another one horizontal scroll?
so i have created a custom calender on top the dates will be in a horizontal scroll inside a list view builder
and below some icons as per the number of the days in a month in anthor list view builder
now the list view builder with icons is inside…
Shiju Shaji
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1 answer
how can i take a picture position like Instagram on flutter?
post is not positioned under AppBar when I clicked on the picture except first. I want to make it like Instagram's function. How can I fix it?
dragonJin
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Flutter - ScrollController not attached to any scroll views
ScrollController not attached to any scroll views.
'package:flutter/src/widgets/scroll_controller.dart':
package:flutter/…/widgets/scroll_controller.dart:1
Failed assertion: line ** pos **: '_positions.isNotEmpty'
This won't be an exact solution…
boraygen
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Connect scrollcontroller to multiple screens using getx - flutter
I have four screens on my app, first one displays a list of messages using a listview, second one has a button with an input that sends messages, third screen connects the first and second screen together and the fourth screen is my getx controller…
Brightcode
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ScrollController's using Flutter's new version
I having problem with Flutter's ScrollController. I want to be notified (at the debug console in the i.e) when I scroll ListView view and reach at the end of the list. I think What I learned is not applicable with flutter's new version. Do you have…
Sharofiddin Azizmatov
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1 answer
Flutter: Save and restore listview last scroll position not working
I need to restore the last scroll position in listview on app restart. I'm using listview.builder & scroll controller to save and restore offset but the listview doesn't scroll to previous position and starts from the top. I've even tried saving…
Noor
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