Code example: https://gist.github.com/v1z4/4c231063b9e22eac5961fb0c437119fe
I have a list of dynamic elements with different height, and I need to have a scrollbar. I use iOS style widgets, so I have wrapped ListView in CupertinoScrollbar().
I test it in real device attached, because simulator does not have scrollbar.
The list works fine, but scrollbar is twitching, because the height of elements are different.
It works fine when I add fixed height to container in ListView element, but text is being cropped and looks bad. Is there a way to fix twitching?
Related
Does anybody have a clue how to achieve expand/collapse animation for a given Container widget?
I tried to use ExpandablePanel but it is not what I really want, because I want to render a Column within a Container, and if the Container is collapsed I want to show only 150px from it, otherwise it should have the height of the content.
Clicking on the arrow the Container should toggle it's state.
Below are some images which represents the goal:
Collapsed
Expanded
The overflow error is thrown because when the column is collapsed there is no room to contain all the children inside the column.
What do we do when we have a column with children's height larger than the screen height? We use scrolling!
So you can wrap your column with SingleChildScrollView widget to make the column scrollable, so when it collapses it doesn't complain about the children's height, instead, the scrolling functionality handles them because you can scroll in a column even if it has very small width.
I am using a CustomScrollView and Slivers inside it and redendering the list using SliverChildBuilderDelegate. This works fine, but my requirement is to have a Fixed Container of height = height of screen/2 and inside that I want to render a list and and it can scroll as well, I am using CupertinoSliverNavigationBar [this cannot be replaced]. I am able to draw a Container and inside that I am able to show a list using Listview.builder, but the problem is I am unable to scroll the list, whenever I scroll it, it goes to top again, I want something Like, my CustomScrollView should be kept as it is, just I want to create a Scrollable Container of fixed height and the list inside that should scroll properly and CustomScrollView can also scroll, I have tried many widgets like Wrap, Rows, Columns, SingleChildScrollView, also tried NeverScrollPhysics() Behaviour for CustomScrollView but nothing is working out. Please Help!
I am trying to display a scrollbar on the right-hand side of a ScrollView (a GridView in this case) but constraining the width of the scrollable area while still displaying a scrollbar on the right-hand side. I can't see how to customize the position of the scrollbar relative to the Scrollable
See this DartPad for an example.
In the example above, the ScrollBar is displayed directly to the right hand side of the GridView's children, but I would prefer to have it all the way to the right. I can't find any affordances in the GridView constructor to help me with this. Does this require a CustomScrollView or can this be achieved with a normal GridView?
It is necessary that this GridView to have exactly 400px in width? If this is not necessary you can set the width of your ConstrainedBox like:
width: MediaQuery.of(context).size.width,
Then the GridView will have the exact size as your screen, so in consequence th scroll bar will be where you want it to be.
The fix was to swap the Center and Scrollbar widgets.
Before:
Center
Scrollbar
ConstrainedBox
After:
Scrollbar
Center
ConstrainedBox
https://dartpad.dev/09ddf64d254b0c331920cf970acc4447
My question is similar to this How to make my page scrollable when i show overlay element, that have too many items in flutter? but it has no answers so I'll try to ask as well:
I have an Overlay showing a list of questions using ListView. The list of questions is long and I need to enable scrolling inside the Overlay.
Now it's static and part of it disappears at the bottom of the mobile device.
Why is not just scrollable (since the list inside the Overlay is inside a ListView) and is there a way to make it scrollable?
Thanks in advance for any help!
UPDATE (SOLVED) :
The problem was that the ListView widget is inside a Positioned widget and the top, left, bottom and width values (in my case) need to be set in order for the content to be scrollable.
The problem was that the ListView widget is inside a Positioned widget and the top, left,bottom and width values (in my case) need to be set in order for the content to be scrollable.
I am looking for the proper way, how can I use scrollable view only if necessary.
I want to create a card which will have an 500 height container. In this case some small-screen device could not show the content properly specially if the keyboard is showing.
In this case the screen should be scrollable, but I cant find a good solution.
I used a SingleChildScrollView with a Column child. Inside the column there was the Card view with the content.