Unfortunately the Keyboard hides the TextField if it gets opened.
I also tried resizeToAvoidBottomInset: true, but it remains causing Render OverFlow error.
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: getPrimaryDarkColor(),
resizeToAvoidBottomInset: true,
body: Stack(
children: [
Positioned(
bottom: -10,
child: Image.asset(
"assets/login_path_background.png",
width: 350,
color: getPrimaryColor().withOpacity(0.4),
),
),
Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
How can I fix this?
wrap the body in a SingleChildScrollView
Wrap the Column in a SizedBox with device height as it’s height and the device width as it’s width. Then, inside that SizedBox, wrap the Column with a SingleChildScrollView. I had this same exact issue and just using a SingleChildScrollView does not work because the Stack item has no specific size or position. When you wrap the whole SingleChildScrollView in a SizedBox with the device size it works. Hope this helps!
Related
I am working the project and there is requirement to not use fixed width and height. However, I am getting pixel overflowed error. I used Expanded and other widgets but still getting an error. Code look likes this.
#override
Widget build(BuildContext context) {
return Scaffold(
child: InteractiveViewer(
minScale: 1,
maxScale: 1,
child: Center(
child: SingleChildScrollView(
child: Column(
children: [w],
),
),
),
),
);
}
In Column children we can add multiple children and page height grows with it. However, using Expanded widget is not solving the issue and getting pixel overflowed error. Using Container and MediaQuery is not required. Any solution will be appreciated. Thanks.
you can try this:
Container(height:MediaQuery.of(context).size.height,
width:MediaQuery.of(context).size.width,
child: SingleChildScrollView(
child: Column(
children: [w],
),),)
How can I avoid the overflowing in my text when using ExpansionTile widget? When I was not using this widget my text was not overflowing and using SingleChildScrollView was enough.
ExpansionTile(
title: Text('History'),
children: [
SingleChildScrollView(
child:Text(widget.descriptionText as String),
),
]
)
A single child scroll view can take infinite height if not bound. You can try wrapping it with a sizedBox of specific height
ExpansionTile(
title: Text('History'),
children: [
SizedBox(
height: 500,
width: MediaQuery.of(context).size width*0.7,
child: SingleChildScrollView(
child:Text(widget.descriptionText as String),
),
)
]
)
i have broadcast screen ( in full screen) . i have textField on the same broadcast screen on the bottom so we have here Stack like following
Scaffold(
body: Stack(
alignment: Alignment.bottomCenter,
children:[
broadCastScreen()
TextField()
]
)
)
so my layout looks like this
now when i tap on the text field all scaffold resize its self because of the keyboard show up
the good point in this part that my textfieldalways smoothly move to be up the keyboard visible
but the bad part that my broadcast screen resize its self inappropriately for the user experience
so i decide to prevent that annoying party with set resizeToAvoidBottomInset to false
well now everything sound good , but i noticed that my keyboard covering my text field
so How Can i use resizeToAvoidBottomInsetto all my widgets except my textfield part ?
i tried to wrap my textfield with another scaffold with set resizeToAvoidBottomInset to true
and scaffold color to transparent so others widgets be visible and tis work as expected but i completely faced problems with GestureDetector pointers in my first scaffold and thats because my second scaffold stack it
another solution i tried programmatically to set my textfield bottom padding to be the same of my keyboard height using EdgeInsets.fromWindowPadding(WidgetsBinding.instance.window.viewInsets,WidgetsBinding.instance.window.devicePixelRatio);
but that's not perfect way because there is some delay with height keyboard value like 900 millisecond to get the keyboard height Furthermore it i tested it on several difference phones and i got null height with some devices It does not guarantee the measurement of all phones
any other perfect way friend ?
Scaffold(
resizeToAvoidBottomInset: false,
body: Stack(
fit: StackFit.expand,
children: [
SingleChildScrollView(
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Content()
]
Positioned(
bottom: 0,
child:
child: TextFormField(
decoration: InputDecoration(filled: true, fillColor:
Colors.red
),
),
)
],
),
);
Simply Wrap your content in SingleChildScrollView and wrap your TextField in Positioned widget set bottom parameter of Positioned to Zero, add
fit: StackFit.expand,
Note: Don't forget to add above code to your Stack Widget
Let's try to do something like this
Scaffold(
body: Stack(
alignment: Alignment.bottomCenter,
children:[
Positioned.fill(child:
broadCastScreen()),
Position(
bottom:0,
child: TextField())
]
)
)
I want to make it so that the elements in the to-do list do not get scrolled out of the screen when the soft keyboard is shown. Using SingleChildScrollView on the Scaffold body and doing nothing else causes the whole body to be scrolled up so that the TextField is visible.
The TaskList itself is a container that has a ListView.builder as a child by the way.
final usableHeight = MediaQuery.of(context).size.height -
appBar.preferredSize.height -
MediaQuery.of(context).padding.top;
return Scaffold(
appBar: appBar,
body: SingleChildScrollView(
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Container(
height: usableHeight * 0.9,
child: TaskList(_userTasks),
),
Container(
height: usableHeight * 0.1,
child: NewTask(_addNewTask),
),
],
),
),
);
I tried changing the task list container height to this, to account for the size of the keyboard when it's visible:
Container(
height: (usableHeight - MediaQuery.of(context).viewInsets.bottom) * 0.9,
child: TaskList(_userTasks),
),
And that almost solved the problem but there's still a tiny bit of scrolling that hides part of the first task, and I don't know what's causing it.
How should I fix this? I'm okay to completely changing my layout logic.
You can simply remove the SingleChildScrollView then pass your widget for adding task to the floatingactionbutton property of scaffold.
final usableHeight = MediaQuery.of(context).size.height -
appBar.preferredSize.height -
MediaQuery.of(context).padding.top;
return Scaffold(
appBar: appBar,
body:
Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Container(
height: usableHeight * 0.9,
child: TaskList(_userTasks),
),
Container(
height: usableHeight * 0.1,
child: NewTask(_addNewTask),
),
],
),
floatingactionbutton : New task()
);
There is also a floatingactionbuttonstyle property which you can use to style alignment and all of floatingactionbutton widget
Hope it work for you
I think you should probably use a Stack here, and position the new task view in the bottom. If you have a lot of tasks, they will then also scroll behind the card (you might want to add a container or sizedbox at the bottom of the list so you can always still see the last item.
body: Stack(
children: [
// the list of tasks, just put the ListView directly (or wrap it in an Expanded)
TaskList(...),
// position the add task
// it will automatically adjust when the keyboard appears
Positioned(
child: Newtask(...),
bottom: 0.0,
),
],
),
https://api.flutter.dev/flutter/widgets/Positioned-class.html
Code
#override
Widget build(BuildContext context) {
return SafeArea(
child: Scaffold(
appBar: AppBar(
title: Text('Search Families'),
centerTitle: true,
),
backgroundColor: StaticEntry.backColor,
body: Center(
child: FractionallySizedBox(
widthFactor: 0.8,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
SearchInput(onSubmitHandler: onSubmit),
SizedBox(
height: 300,
),
resultList.isNotEmpty
? Container( // <---------------- Container that I am using to wrap the list view widget
height: 400, // <---------------- fixed height I am setting on the container that is wrapped around the ListView widget
child: ListView.builder( // <---------------- ListView widget
itemCount: 20,
itemBuilder: (context, index) {
return Text('Heyyyy!');
},
),
)
: SizedBox()
],
),
),
),
),
);
}
Problem
In the above code, as I have pointed using arrows, I am wrapping a ListView widget in a Container and assigning a fixed height to that Container since ListView widgets has an infinite height by default.
The problem with this approach is, since that height I am providing to the container is a fixed height, the layout breaks on devices with small viewport heights, while it works fine with devices that has a large viewport height.
So what I am trying to figure out is, how can I set a height to that Container that works on all devices without breaking the layout? (I am trying to make that height as maximum as possible without making the app break on smaller devices.)
(While researching about this, I came across this stack overflow link and according to that link, I tried wrapping the ListView widget with a Flexible widget and set the shrinkWrap property of the ListView widget to true. This did not work and it caused my ListView widget and the other widget to gain as much space as possible between them and pushed my ListView widget to the bottom of the screen.)