I have a screen with a column in flutter which is basically a form. At first i had trouble with the fact that the pop-up keyboard reduced the visible space and thus had an overflow. Fixed that adding the SingleChildScrollView and setting a container as a parent with an specific height (based on devicequery size).
Unfortunately, when I test the rotated screen, i get the same problem. Is there a way to set the height of the container which controls the SingleChildScrollView so that it adjusts to the total size occupied by the column widgets?
Please add Listview instead of Colum Widget.
in your scaffold
set resizeToAvoidBottomInset to false or add it
resizeToAvoidBottomInset:false
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 create a GridView in flutter with the shrinkWrap set to true (which I expect the GridView will be shrink exactly as the content's size).
But in my demo (Green background color indicates GridView , and the Red Color indicates the content widgets in the GridView)
I found that , the GridView will not shrink as small as possible to it's contents. The GridView's height is a bit larger than the GridView's content height .
What makes the GridView not shrink as small as possible?
OK, after debugging with the source code . I found the reason to this problem:
Seems when you create a ListView & GridView with a null padding passing to it . Flutter SDK will make a Inset (RenderSliverPadding)during the layout of the ListView&GridView.
So the way to remove this padding is set a padding in the ListView&GridView's constructor
I want to give a margin around the whole screen in Flutter. So I put my content inside a Column and put the Column inside a Container. So I gave a padding to the whole screen. But when a TextField is selected and the keyboard appears the bottom overflow. I can't give resizeToAvoidBottomPadding: false, because then the keyboard covers the TextField.
I can't use SingleChildScrollView or a ListView because then the placing of the children won't keep space between.
It seems the only option is to remove the Container and set a padding to each child of the Column.
Is there a better option for this ?
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.