I have a problem with the Stack Widget.
I have a Stack that contains two children: an Image wrapped with GestureDetector and a Container
. When i click anywhere on the Container, whoever is last on the Stack children list his onTap
I am extremely new to flutter.
Screenshot of the screen
this code
sonItem(dynamic icon ,String text,Color color){
return GestureDetector(
onTap: () {
print("dddddddddddddddd");
},
child: Container(
width: 70,
height: 100,
margin: EdgeInsets.all(2),
padding: EdgeInsets.all(2),
child: Column(
children: [
Icon(icon ,color: color,),
Text(text)
],
),
),
);
}
I Have a problem with the Stack Widget.
I have a Stack that contains two children: an Image wrapped with GestureDetector and an Container
. When i click anywhere on the Container , whoever is last on the Stack children list his onTap
body: Container(
color: Colors.white,
child: SingleChildScrollView(
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
Container(
color: Color(0xffF0F0F0),
height: 200,
child: Stack(
overflow: Overflow.visible,
alignment: Alignment.center,
children: [
Positioned(
bottom: -170.0,
child: Container(
padding: EdgeInsets.only(top: 40 , right: 10, left: 10),
height: 250,
decoration: BoxDecoration(
color: Color(0xffFFFFFF),
borderRadius: BorderRadius.circular(30),
border: Border.all(
width: 1,
color: Colors.black,
style: BorderStyle.solid,
),
),
child: Column(
children: [
Text('company',
textAlign: TextAlign.center,
style: TextStyle(
fontSize: 24,
color: Colors.black,
),
),
Text("The number 2000"),
RatingBar(
rating: 3,
icon:Icon(Icons.star,size:20,color: Colors.grey,),
starCount: 5,
spacing: 5.0,
size: 20,
isIndicator: false,
allowHalfRating: true,
onRatingCallback: (double value,ValueNotifier<bool> isIndicator){
print('Number of stars--> $value');
//change the isIndicator from false to true ,the RatingBar cannot support touch event;
isIndicator.value=true;
},
color: Colors.amber,
),
Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
sonItem(Icons.phone,"call us",Colors.green),
sonItem(Icons.location_on_outlined,"location",Colors.red),
sonItem(Icons.facebook,"FaceBook",Colors.blue),
sonItem(Icons.add_ic_call_outlined,"whatsapp",Colors.green)
],
)
],),
)),
Try below code hope its help to you
Stack(
children: <Widget>[
//your InkWell or GestureDetector Widget
InkWell(
child: Container(
// your child Widget
),
onTap: () {},
),
Positioned(),
]
),
The problem is solved when I delete bottom: -170.0,
But I need it in the design
Related
I use a SliverAppBar and use flexibleSpace title instead of the default sliver title, on portrait mode, it is perfectly fine as shown :
But when i get to landscape mode it causes a bottom overflow by 13px, VScode tells me the renderflex is caused by a column.
This is how it looks like in landscape :
It is so messy that when i discovered this bug i couldn't continue coding until i fix this and this is what i've been trying to do :(
I will give my SliverAppBar code and also the widget used in the sliverapp flexibleSpace title as snippet below
I have tried using Expanded instead of Flexible, but it causes even more errors.
I also tried using some screen utility packages in pub.dev but seem like i don't use it properly.
Main view with sliverapp :
class HomeView extends GetView<HomeController> {
#override
Widget build(BuildContext context) {
controller.initScrollController();
return WillPopScope(
onWillPop: Helper().onWillPop,
child: Scaffold(
body: RefreshIndicator(
onRefresh: () async {
Get.find<LaravelApiClient>().forceRefresh();
controller.refreshHome(showMessage: true);
Get.find<LaravelApiClient>().unForceRefresh();
},
child: CustomScrollView(
physics: const AlwaysScrollableScrollPhysics(),
controller: controller.scrollController,
shrinkWrap: false,
slivers: <Widget>[
SliverAppBar(
backgroundColor: Color(0xffFFFFFF),
expandedHeight: MediaQuery.of(context).size.height * 0.18,
elevation: 0.5,
floating: false,
iconTheme: IconThemeData(color: Get.theme.primaryColor),
actions: [NotificationsButtonWidget()],
flexibleSpace: FlexibleSpaceBar(
collapseMode: CollapseMode.parallax,
title: MainProfileDetails(),//i suspect this is the widget causing the bug
),
),
SliverToBoxAdapter(
child: Wrap(
children: [
JobSummaryView(),
//BookingsListWidget(),
],
),
),
],
)),
),
);
}
}
MainProfileDetails() code:
class MainProfileDetails extends StatelessWidget {
const MainProfileDetails({
Key key,
}) : super(key: key);
#override
Widget build(BuildContext context) {
return Obx(() {
return Padding(
padding: const EdgeInsets.only(left: 5.0),
child: Row(
mainAxisSize: MainAxisSize.max,
crossAxisAlignment: CrossAxisAlignment.end,
mainAxisAlignment: MainAxisAlignment.start,
children: [
Stack(
children: [
GestureDetector(
onTap: () {
Get.toNamed(Routes.PROFILE);
},
child: Container(
child: Stack(
children: [
SizedBox(
width: 60,
height: 60,
child: ClipRRect(
borderRadius: BorderRadius.all(Radius.circular(80)),
child: CachedNetworkImage(
height: 100,
width: double.infinity,
fit: BoxFit.cover,
imageUrl: Get.find<AuthService>()
.user
.value
.avatar
.thumb,
placeholder: (context, url) => Image.asset(
'assets/img/loading.gif',
fit: BoxFit.cover,
width: double.infinity,
height: 80,
),
errorWidget: (context, url, error) =>
Icon(Icons.error_outline),
),
),
),
Positioned(
top: 35,
left: 30,
right: 0,
child: Get.find<AuthService>()
.user
.value
.verifiedPhone ??
false
? Icon(Icons.check_circle,
color: Color(0xffB0BEC1), size: 24)
: Icon(Icons.error_outline),
)
],
),
),
),
],
),
SizedBox(
width: 10,
),
Column(
mainAxisAlignment: MainAxisAlignment.end,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Flexible(
flex: 2,
child: Padding(
padding: const EdgeInsets.only(left: 1.0),
child: Text(
'Hello, ${Get.find<AuthService>().user.value.name}',
style: GoogleFonts.poppins(
color: Color(0xff34495E), fontSize: 9),
),
),
),
Flexible(
flex: 2,
child: Padding(
padding: const EdgeInsets.only(top: 1.0, bottom: 1.0),
child: Text(
'Good Stitching',
style: GoogleFonts.poppins(
fontSize: MediaQuery.of(context).size.width * 0.04,
color: Color(0xff000000),
fontWeight: FontWeight.w600),
),
),
),
Flexible(
child: Container(
decoration: BoxDecoration(
color: Color(0xffeeeeee),
borderRadius: BorderRadius.circular(15),
),
child: Padding(
padding: const EdgeInsets.only(
top: 3.0, bottom: 3.0, left: 10.0, right: 10.0),
child: Get.find<AuthService>().user.value.verifiedPhone ??
false
? Text(
'Verified',
style: GoogleFonts.poppins(
fontSize:
MediaQuery.of(context).size.width * 0.025,
fontStyle: FontStyle.italic),
)
: Text(
'Unverified',
style: GoogleFonts.poppins(
fontSize:
MediaQuery.of(context).size.width * 0.025,
fontStyle: FontStyle.italic),
),
),
)),
],
),
//NotificationsButtonWidget(),
],
),
);
});
}
}
Please i need your time and assistance on this one. Thank you!
After many hours of asking for help here, i decided to go with simple AppBar in flutter as SliverAppBar flexibleSpace title is only customisable to a limit.
And that was goodbye to orientation issues.
Thanks everyone for your support.
I'm trying to make this drawing but I'm struggling.
I don't understand how to make the white block of information dynamic. That is to say that it automatically adapts to the size in height of the elements it contains.
I am for the moment obliged to give a defined height (here 200), I would like the size to be automatic. Moreover if I do not give a defined size my gray line on the left side disappears.
The design :
ListTile(
title : Column(
children: [
Container(
width: double.infinity,
child: Row(
children: [
Container(
width: 50,
alignment: Alignment.center,
child: Container(
width: 20,
height: 20,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(40),
border: Border.all(
width: 5,
color: Colors.blue,
style: BorderStyle.solid
)
),
),
),
Text('9:00 am - 9:15 am')
],
)
),
Container(
child: IntrinsicHeight(
child: Row(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
Container(
width : 50,
alignment: Alignment.center,
child: IntrinsicHeight(
child: Row(
crossAxisAlignment: CrossAxisAlignment.stretch,
mainAxisAlignment: MainAxisAlignment.center,
children: [
Container(
color: Colors.grey,
width: 3,
height : 200 // if I remove the size it desappear
),
],
),
),
),
Expanded(
child: Container(
margin: EdgeInsets.symmetric(vertical :10),
padding: EdgeInsets.symmetric(vertical: 20, horizontal: 10),
color: Colors.white,
child: Column(
children: [
Text('Titre'),
Text('Info 1'),
Text('Info 2')
],
),
),
)
],
),
),
)
],
),
),
You can try this package for timelines https://pub.dev/packages/timeline_tile.
This package also automatically Sizes your widget height and width.
And for Automatically Sizing your widgets next time, You could use Expanded widget at most places in your code.
Note: An Expanded widget must be a descendant of a Row, Column, or Flex, So Use it carefully.
I think it's much easier with this package, timelines.
TimelineTileBuilder.connected(
connectionDirection: ConnectionDirection.before,
itemCount: processes.length,
contentsBuilder: (_, index) {
//your Container/Card Content
},
indicatorBuilder: (_, index) {
if (processes[index].isCompleted) {
return DotIndicator(
color: Color(0xff66c97f),
child: Icon(
Icons.check,
color: Colors.white,
size: 12.0,
),
);
} else {
return OutlinedDotIndicator(
borderWidth: 2.5,
);
}
},
connectorBuilder: (_, index, ___) => SolidLineConnector(
color: processes[index].isCompleted ? Color(0xff66c97f) : null,
),
),
),
I am using the below code, where I have a ListView that had a switch.
I want to implement something like when I click on the RaisedButton - it will reload the ListView and all the values of switch.value should be changed to either true or false.
The user can either change the value of the switch from items in the ListView or from the button click.
I do not have an idea on how I should change the value or all the switches in the ListView.
return Column(
children: <Widget>[
Container(
width: MediaQuery.of(context).size.width / 2,
height: 100,
padding: EdgeInsets.all(20),
child: RaisedButton(
onPressed: () {
},
child: Text(
BTN_START_TRIP,
style: new TextStyle(
fontSize: 20.0,
),
),
textColor: buttonFontColor,
color: buttonColor,
shape: new RoundedRectangleBorder(
borderRadius: new BorderRadius.circular(15.0))
),
),
Expanded(
child: ListView.builder(
padding: EdgeInsets.all(3.0),
// Let the ListView know how many items it needs to build.
itemCount: snapshot.data.results.length,
// Provide a builder function. This is where the magic happens.
// Convert each item into a widget based on the type of item it is.
itemBuilder: (context, index){
return Container(
height: 120,
child: Card(
elevation: 10,
child: InkWell(
splashColor: Colors.blue.withAlpha(30),
onTap: () {
print(snapshot.data.results[index].original_title);
},
child: Container(
height: 120,
child: Row(
children: <Widget>[
Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Container(
padding: EdgeInsets.fromLTRB(20, 0, 5, 0),
width: MediaQuery.of(context).size.width -90,
child: Align(
alignment: Alignment.topLeft,
child: Text(snapshot.data.results[index].original_title,
textAlign: TextAlign.left,
style: TextStyle(fontSize: defaultTitleFontsize, color: defaultFontColor),
maxLines: 5),
),
),
Container(
padding: EdgeInsets.fromLTRB(20, 0, 5, 0),
child: Align(
alignment: Alignment.topLeft,
child: Text(snapshot.data.results[index].original_language,textAlign: TextAlign.left,style: TextStyle(fontSize: defaultsubTitleFontsize, color: defaultFontColor)),
),
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.end,
crossAxisAlignment: CrossAxisAlignment.end,
children: <Widget>[
Container(
child: Switch(
value: false,
onChanged: (value){
setState(() {
print(value);
});
}
),
),
],
),
]
),
),
),
),
);
},
),
)
],
);
You'll need to have a variable to decide if the switch should be on or off. And during a certain event (click of button e.g) set the variable to appropriate value & re-trigger the build (re-painting of the UI) by calling setState. You'll need to have the above logic part of a stateful widget to accomplish that.
I have Stepper in my app, and I have problems with placing textfield on screen, when I want to text some text in textfield, appears keyboard and over it shows me that:
A RenderFlex overflowed by 139 pixels on the bottom.
I read some articles and understood, that I have to use FittedBox, but I dunno how to use it with best way. How can I reach my goal?
Code:
#override
Widget build(BuildContext context) {
globalHeight = (MediaQuery.of(context).size.height) * 0.85;
return Scaffold(
body: AnnotatedRegion<SystemUiOverlayStyle>(
value: SystemUiOverlayStyle.light,
child: Container(
decoration: BoxDecoration(color: colorsBackround[_currentPage]),
child: Padding(
padding: EdgeInsets.symmetric(vertical: 10.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
Container(
height: globalHeight,
child: PageView(
physics: ClampingScrollPhysics(),
controller: _pageController,
onPageChanged: (int page) {
setState(() {
_currentPage = page;
});
},
children: <Widget>[
// some code
Padding(
padding: EdgeInsets.all(10.0),
child: Center(
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
Image(
image: AssetImage(
itemIcon[_currentPage],
),
height: 300.0,
width: 300.0,
),
Text(
'Укажите ваш возраст',
style: kTitleStyle,
),
SizedBox(
width: MediaQuery.of(context).size.width * 0.8,
height: 50.0,
child: Padding(
padding: EdgeInsets.only(
top: 20.0,
left: 20,
right: 20,
bottom: MediaQuery.of(context)
.viewInsets
.bottom),
child: TextField(
controller: ageController,
keyboardType: TextInputType.number,
onChanged: (text) {
setState(() {
if (text.isNotEmpty) {
inputs[1] = true;
} else {
inputs[1] = false;
}
});
},
decoration: InputDecoration(
labelText: 'Возраст',
),
style: TextStyle(fontSize: 18.5),
)),
),
],
),
),
),
//some code
],
),
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: _buildPageIndicator(),
),
_currentPage != _numPages - 1
? Expanded(
child: Container(
child: Row(
mainAxisSize: MainAxisSize.max,
children: <Widget>[
Expanded(
child: Align(
alignment: FractionalOffset.bottomLeft,
child: FlatButton(
onPressed: () {
_pageController.previousPage(
duration: Duration(milliseconds: 500),
curve: Curves.ease,
);
},
child: Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Icon(
Icons.arrow_back,
color: Colors.white,
size: 26.0,
),
SizedBox(width: 10.0),
Text(
'Назад',
style: TextStyle(
fontFamily: 'Century Gothic',
color: Colors.white,
fontSize: 14.5,
),
),
],
),
),
)),
Expanded(
child: Align(
alignment: FractionalOffset.bottomRight,
child: FlatButton(
onPressed: () {
_pageController.nextPage(
duration: Duration(milliseconds: 500),
curve: Curves.ease,
);
},
child: Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Text(
'Дальше',
style: TextStyle(
fontFamily: 'Century Gothic',
color: Colors.white,
fontSize: 14.5,
),
),
SizedBox(width: 10.0),
Icon(
Icons.arrow_forward,
color: Colors.white,
size: 26.0,
),
],
),
),
)),
],
)))
: Text(''),
],
),
),
),
),
bottomSheet: _currentPage == _numPages - 1
? Container(
height: 75.0,
width: double.infinity,
color: Theme.of(context).scaffoldBackgroundColor,
child: GestureDetector(
onTap: () => print('Get started'),
child: Center(
child: Padding(
padding: EdgeInsets.only(bottom: 15.0),
child: Text(
'Начать',
style: TextStyle(
fontFamily: 'Century Gothic',
color: Colors.white,
fontSize: 21.0,
fontWeight: FontWeight.bold,
),
),
),
),
),
)
: Text(''),
);
}
}
There is no direct solution to prevent overflowing issues, it depends on your current code. So, here you use
Add to your Scaffold
resizeToAvoidBottomInset: false
Wrap your widget in SingleChildScrollView
SingleChildScrollView(
child: YourColumn(),
)
That happens because when opening the keyboard, the body is resized to avoid the keyboard appear over the text field, and since your content isn't scrollable the content of the body gets overflowed. Check this property of the Scaffold:
/// If true the [body] and the scaffold's floating widgets should size
/// themselves to avoid the onscreen keyboard whose height is defined by the
/// ambient [MediaQuery]'s [MediaQueryData.viewInsets] `bottom` property.
///
/// For example, if there is an onscreen keyboard displayed above the
/// scaffold, the body can be resized to avoid overlapping the keyboard, which
/// prevents widgets inside the body from being obscured by the keyboard.
///
/// Defaults to true.
final bool resizeToAvoidBottomInset;
If you put that to false, the body won't be resized so the content won't be overflowed.
If you leave it as default, you need to make the body scrollable. In your case, you could change the root Column for a ListView and you will need to remove the Expanded wrap of the third item of the column.
But I recommend you to try to simplify the structure of the widgets.
Wrap your widget with a SingleChildScroll widget and that should work and solve the overflow issue
I am making a flutter application in which i uses body as a stack and in this stack i have two child.One is main body and other is back button which is at top of screen.The first child of stack is scrollview.Here is my build method.
Widget build(BuildContext context) {
return Scaffold(
//debugShowCheckedModeBanner: false,
key: scaffoldKey,
backgroundColor: Color(0xFF5E68A6),
body: Stack(
children: <Widget>[
Container(
margin: const EdgeInsets.fromLTRB(0.0, 10.0 , 0.0 , 0.0 ),
height: double.infinity,
child:CustomScrollView(
slivers: <Widget>[
new Container(
margin: EdgeInsets.all(15.0),
child:Text(getTitle(),
style: TextStyle(fontSize: 20.0,fontWeight: FontWeight.bold,color: Colors.white),
),
),
//middle section
_isLoading == false ?
new Expanded(child: GridView.builder(
itemCount: sub_categories_list.length,
physics: const NeverScrollableScrollPhysics(),
gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount: 2),
itemBuilder: (context, position){
return InkWell(
child: new Container(
//color: Colors.white,
padding: EdgeInsets.all(20),
margin: EdgeInsets.all(10),
height: 130,
width: 130,
child: new Center(
child :
Text(sub_categories_list[position].name,
style: TextStyle(fontSize: 18.0,fontWeight: FontWeight.bold),
)
),
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.all(Radius.circular(16)),
// border: Border.all(color: Colors.black, width: 3),
),
),
onTap: () {
//write here
// Fluttertoast.showToast(msg: "You clicked id :"+sub_categories_list[position].cat_id.toString());
Navigator.pushNamed(context, '/advicemyself');
},
);
}
))
:
CircularProgressIndicator(),
Container(
margin: EdgeInsets.all(18.0),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
mainAxisSize: MainAxisSize.max,
children: <Widget>[
new Column(
children: <Widget>[
Image.asset('assets/bt1.png'),
Container(
margin: EdgeInsets.all(10.0),
child: Text("FIND HELP",
style: TextStyle(fontSize: 18.0,color: Colors.white),
),
)
],
),
new Column(
children: <Widget>[
Image.asset('assets/bt2.png'),
Container(
margin: EdgeInsets.all(10.0),
child: Text("HOME",
style: TextStyle(fontSize: 18.0,color: Colors.white),
),
)
],
),
new Column(
mainAxisAlignment:MainAxisAlignment.spaceEvenly,
children: <Widget>[
Image.asset('assets/bt3.png'),
Container(
margin: EdgeInsets.all(10.0),
child: Text("CALL 999",
style: TextStyle(fontSize: 18.0,color: Colors.white),
),
)
],
),
],
),
),
],
),
),
Positioned(
left: 10,
top: 30,
child: IconButton(
icon: Icon(Icons.arrow_back),
onPressed: () => {
//go back
},
color: Colors.white,
iconSize: 30,
),
),
// makeview()
],
),
// This trailing comma makes auto-formatting nicer for build methods.
);
}
I have also tried using SingleChildScrollView but that also does not works.What i am doing wrong here ?
Here is link to the design which i want to make.
https://imgur.com/a/w7nLmKC
The back should be above scroll view so i used stack widget.
Running your sample code, there doesn't seem to be a need for overlapping widgets. Using Stack seems to be unnecessary. One way you could do is by using Column widget, and using Expanded as you see fit.
Widget build(BuildContext context) {
return Scaffold(
body: Column(
children: [
Widget(), // back button goes here
CustomScrollView(...),
],
),
);
}
Otherwise, if you really need to use Stack, the scroll function should work fine. I've tried this locally and the Stack widget doesn't interfere with scrolling of Slivers, ListView, and GridView.
Stack(
children: [
/// Can be GridView, Slivers
ListView.builder(),
/// Back button
Container(),
],
),