My first question is how to set image in bottom right corner, and the answer is
Align(
alignment: Alignment.bottomRight,
child: (Image(image: AssetImage("images/bg_decore_up_la.png"),)),
),
It is working fine,
But in parent Scaffold I set
resizeToAvoidBottomInset: true,
means scroll is happening when keyboard is appear.
For this ,
This Align (image) widget i set out of SingleChildScrollView
Now my whole code like
Scaffold(
resizeToAvoidBottomInset: true,
appBar:AppBar(),
body:SafeArea(
child:Stack(
children:[
Align(
alignment: Alignment.bottomRight,
child: (Image(image: AssetImage("images/bg_decore_up_la.png"),)),
),//want to fixed widget when keyboard will appear
ScrollConfiguration(
behavior: MyBehavior(),
child: SingleChildScrollView(
//scrolling widget list
)
)
]
)
)
);
If i set
Align(
alignment: Alignment.topRight,
child: Container(
margin: EdgeInsets.only(top: 60),
child: (
Image(
image: AssetImage("images/bg_decore_bottom_la.png"),)),
),
this code fixed the issue,
but for this i need proper top margin
topMargin=totalScreenHeight-ImageWidth;
Use a Stack and Positionned widget like so
Stack(
children: const <Widget>[
Positioned(
bottom: 0,
right:0,
child: (Image(
image: AssetImage("images/bg_decore_up_la.png"),
)),
)
],
),
Related
In my app I have a bottomBar which is placed at the bottom right above the SafeArea:
The problem is that I would like to have a white Container at the bottom (red arrow in image) so that for bigger iPhones (where the bottom of the screen IS NOT EQUAL to the safeArea) the empty place in the image if filled white.
For phones where the bottom screen is equal to the safeArea the fillContainerHeight should simply be nil/zero.
This is my setup:
Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.end,
// mainAxisSize: MainAxisSize.max,
children: [
SafeArea(
child: Row(
children: [
Expanded(
child: Container(
height: 49,
color: Colors.white,
)),
Container(
height: 49,
child: Image.asset('assets/images/bottomBar.png')),
Expanded(
child: Container(
height: 49,
color: Colors.white,
)),
],
),
),
Container(color: Colors.white) // -> fill container
],
)
Right now the container is not being shown. What is the best way to solve my problem here? I couldn't find anything on this. Let me know if you need any more info!
You could try to use the stack widget like this (the second child (align widget) is positioned above your SafeArea widget):
return Stack(
children: [
SafeArea(
child: Scaffold(
appBar: AppBar(),
body: // Your other widgets here
),
),
Align(
alignment: Alignment.bottomCenter,
child: Container(
color: Colors.white,
height: MediaQuery.of(context).padding.bottom;,
),
)
],
);
Another option would be to wrap your SafeArea in a Container and give it a white background while setting the top property to false (= meaning the SafeArea will not be applied to the top):
return Container(
color: Colors.white,
child: SafeArea(
top: false,
child: Scaffold(
appBar: AppBar(),
body: // Your other widgets here
),
),
);
I have a body of scaffold that structured like this :
body : Column(
children : [
Expanded(
child : SingleChildScrollView(
Container (
Column(
//content
)
)
)
),
BottomMenu()
]
)
And the problem is the content would not show up if i dont define the width and height for the Container inside SingleChildScrollView, but if i define the height then the height of my childscrollview wont work dynamically with the content, i want the height to fit the content inside of my container so i can scroll until the end of content. I am still new to this so any advice and suggestion will be appreciated. Thankyou
It is better to use Stack instead of the column as top Widget like this:
Stack(
children: <Widget>[
SingleChildScrollView(
Container (
Column(
//content
)
)
),
Align(
alignment: Alignment.bottomCenter,
child: BottomMenu(),
),
],
)
Does this help you?
Your layout isn't best practice, try:
return Scaffold(
body: LayoutBuilder(builder: (context, constraints) {
return SingleChildScrollView(
child: Container(
width: constraints.maxWidth,
height: constraints.maxHeight,
child: Column(
children: [
//your content
],
),
),
);
}));
This makes a container which is the size of the screen, and it contains a column which will scroll with all the content.
I could not understand what exactly the issue is. But I could give some idea.
Try something like this,
#override
Widget build(BuildContext context) {
return Scaffold(
body: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Container(
color: Colors.blue,
width: MediaQuery.of(context).size.width,
height: MediaQuery.of(context).size.height * 0.9,
child: SingleChildScrollView(
child: Container(
width: MediaQuery.of(context).size.width,
height: MediaQuery.of(context).size.height,
child: ListView(
children: [
Row(
children: [
Container(
margin: const EdgeInsets.only(bottom: 10.0),
height: 100.0,
width: 100.0,
color: Colors.red,
),
],
),
....
],
),
),
),
),
Container(
width: MediaQuery.of(context).size.width,
height: MediaQuery.of(context).size.height * 0.1,
child: BottomMenu(),
),
],
),
);
}
Hope that solves your issue.
IgnorePointer(
child: cProtractor & darkModeOn
? Positioned.fill(
child: Align(
alignment: Alignment.center,
child: Center(
child:
Image.asset('lib/assets/img/cprot2white.png',
width: 500.0, height: 500.0),
)))
: SizedBox())
]));
}
}
The above function switches on and off a protractor overlay for my Google Map. Its parent is a body: Stack(children: [. Is there any way to fix this or get rid of the error? The function is working.
You have to remove Ignore pointer as parent widget of Positioned Widget as Positioned widgets are placed directly inside Stack widgets.
You can achieve the same using below code
Positioned.fill(
child: Align(
alignment: Alignment.center,
child: IgnorePointer(
child: Center(
child: Image.asset('lib/assets/img/cprot2white.png',
width: 500.0, height: 500.0),
),
))),
Here just the hierarchy of the widgets are changed
Project
Hi,
I was trying to align some widgets inside a Stack in Flutter. My end result was something like:
I know that this can be easily achieved with a Row but I want to animate the position ot the two children so I'm forced to use stack.
My problem is simple:
Example code
return Container(
child: Stack(
children: <Widget>[
Align(
alignment: Alignment.centerLeft,
child: _buildSign(),
),
Align(
alignment: Alignment.centerRight,
child: _buildSign(),
),
],
),
);
This will not render as I expected. No matter what I put in the alignment field: Alignment.centerRight and Alignment.centerLeft will always place the child to the center left.
The problem is solved only if I give a fixed width to the wrapping container. Now I understand why this happend but what if I want the container to be the size of his childrens? Label is a dynamic text so his width is unpredictable for me
Any ideas?
Thanks
Hy justAnotherOverflowUser,
In your case, you have to use Positioned Widget inside Stack Widget,
it will give you what you want.
as example:
Positioned(
left: 20.0,
child: Icon(
Icons.monetization_on,
size: 36.0,
color: const Color.fromRGBO(218, 165, 32, 1.0)
)
)
The more flexible way for such alignment is to wrap Align with Positioned.fill
The original answer was posted here Flutter: bottom center widget in stack
return Container(
child: Stack(
children: <Widget>[
Positioned.fill(
child: Align(
alignment: Alignment.centerLeft,
child: _buildSign(),
),),
Positioned.fill(
child:Align(
alignment: Alignment.centerRight,
child: _buildSign(),
),),
],
),
);
I have a Scaffold with the following architecture, and the body is being covered by the bottom navigation. Everything works fine if I comment the navigation.
Scaffold(
backgroundColor: Theme.of(context).backgroundColor,
appBar: AppAppBar(title: this.title),
body: Row(
children: [
Expanded(
child: Container(
child: Padding(
padding: EdgeInsets.symmetric(
horizontal: this.pageProvider.horizontalPadding,
vertical: 25),
child: this.body,
),
),
)
],
),
bottomNavigationBar: AppNavigation(),
);
This is the implementation of the AppNavigation widget:
Stack(
children: <Widget>[
Align(
alignment: Alignment.bottomCenter,
child: Container(
height: 64,
child: BottomNavigation(),
),
),
Align(
alignment: Alignment.bottomCenter,
child: Container(
height: 80,
child: WorkoutButton(),
),
),
],
);
This is the body, regardless of what widget I use:
In case it is not clear enough, the body does not have almost height.
Why don’t you use a BottomNavigationBar widget instead of a Stack?
Anyway, that happens because your Stack is unconstrained, thus, using all the available space. Give it some constrains (E.g., by wrapping it in a ConstrainedBox with some height constraint).
ConstrainedBox(
constraints: BoxConstraints.tightFor(height: 150.0),
child: Stack( ...
)
)