I want to have a line that has 100% parent height, the line should has a fluid height following it's parent's height. the parent's height would be dynamic because every content has it's own height. Just like in Path app.
This is my app, currently I'm setting the height as a constant, how to make it dynamic following it's parent's height? :
Container(
width: 1,
color: Colors. redAccent,
height: 300, // <-- this height
)
try to use the Expanded Widget which uses the available space. you just have to definewhat is the available space here
Expanded(
child: Container(
color: Colors.amber,
width: 100,
),
),
here, if you dont put something on top of the expanded, it will take all the screen
and if not on the bottom, it will reach the bottom of the screen.
it takes the whole free space.
I solved this by adding container and add border left :)
Related
I am new in flutter I can't understand that is infinity size render in flutter
If I use container with infinity width then it will render but in box constraints documentation infinity size can't render
This is because there is something constraining the widget, when you set as an example:
Container(
width: double.infinity,
),
it will try to take an infinity size, which usually will throw an error to you, but it's constrained so it takes the max possible width.
The Container widget is built on top of different multiples widgets such as ConstrainedBox, DecoratedBox, Align, LimitedBox... , the ConstrainedBox defaults to the BoxConstraints.expand(), check it's source code:
// ...
child: ConstrainedBox(constraints: const BoxConstraints.expand()),
);
but if you check also the Scaffold source code :
// ....
final BoxConstraints fullWidthConstraints = looseConstraints.tighten(width: size.width);
so trying to expand that Container even within infinity, will expand it at maximum on the fullWidthConstraints which is, in this case, the screen's width.
Because Flutter Stepper is scrollable, it can't be set the step content to fill its height.
I want to make a layout like this
While I'm getting this layout
I've used SizedBox with fixed height, but it's incorrect way while screens have different height values.
You can use SizedBox , just specify a non-fixed height and get the current screen height via
MediaQuery. of(context). size. height
this is how it works normally regardless of the screen size
Step(
isActive: currentStep >=0,
title: Text('Account'),
content: SizedBox(
height: MediaQuery. of(context). size. height - 300,
child: Text("sdf"),),
),
I wanna make a decorated border as in the image in scrollable widget
Your images dimension is 473 × 670. Corner decoration size 115 x 115. So you can use the centerSlice property to stretch your image according to your needs. Just like this...
Image.asset(
"images/decorated_image.png",
height: 1000, // device or widget height
width: 350, // device or widget height
centerSlice: const Rect.fromLTRB(115, 115, 358, 555),
)
Now you can use stack or any other of your prefered method to put this behind your scrollable list.
You can use Stack:
Stack(
children: [
Image(), // your border image
Container(margin: EdgeInsets.all(12)) // other widgets inside border
]
)
I'm building an expansible card in flutter, which I wanto to animate. I want the parent Container to have a limited height while the card is collapsed, and to have whatever height is necessary for the child when it's expanded. I can reach this result using maxHeight: double.infinity:
Container(
alignment: Alignment.topCenter,
clipBehavior: Clip.hardEdge,
constraints: isExpanded
? BoxConstraints(maxHeight: double.infinity)
: BoxConstraints(maxHeight: 76),
decoration: BoxDecoration(),
child: widget.child,
),
)
But whatever maxHeight value I use other than double.infinity causes the parent to have that exact height, instead of just having the height needed by the child. I can't use double.infinity because that's not animatable. I've tried following this answer's tips, but whatever I wrap the child with, the parent always grows. I've tried changing the child, but even if I use maxHeight on the child itself, the parent always grows to the defined maxHeight.
Why does this happen? Shouldn't maxHeight only cause the parent to expand if needed? How come it works correctly with double.infinity, but doesn't with anything else?
Also, I have tried reaching this result with AnimatedSize, it sort of works. When it is expanding, it works perfectly, but when the child is collapsing, it collapses instantly, and the AnimatedSize's animation follows after.
Edit:
I see what you mean, you want to use AnimatedContainer, but in order to be animated like you want it, it requires you to specify the height. double.infinity won't do in this case, the error message you're getting is correct.
There are ways to get widget height.. I suggest you check this answer: https://stackoverflow.com/a/49650741/7248289
Also, this one might help: https://stackoverflow.com/a/54173729/7248289
I want to use BottomSheet as Footer but BottomSheet hide other container from body?
I think about 2 ways.
First way, Getting height of the BottomSheet and calculate
...
return Container(
height: MediaQuery.of(context).size.height - bottomSheetSize
children: [
Expanded(
child: Container(
color: Colors.white,
child: listView,
)
),
...
or second way, the BottomSheet doesn't cover a body
I don't know how to get size of the BottomSheet or not to cover body.
Can you help me with one of option?
You cannot do anything in the current screen if you open bottom sheets. If you are making a footer type of thing, use another container at the bottom of the first container wrapped in a column or use Stack and stack the footer on top of the first container.