How do I stretch a container in flutter so that it occupies the remaining screen? - flutter

I'm trying to maximize the screen as there is an unused white gap at the bottom (below the green bar which is the countdown/timer for the qn) :
Code:
final quizBottomContentText = Container(
width: MediaQuery.of(context).size.width,
padding: EdgeInsets.only(left:30.0, right:30.0, top: 30.0, bottom: 30),
child: Text(
questions[questionNum].title,
style: TextStyle(fontSize: 18.0),
)
);
final quizOptions = Container(
width: MediaQuery.of(context).size.width,
padding: EdgeInsets.only(left: 40.0, right:40.0, bottom: 40.0),
child: Center(
child: Column(
children: questions[questionNum].options.map<Widget>(
(option) => SimpleRoundButton(
backgroundColor: Color.fromRGBO(58, 66, 86, 1.0),
buttonText: Text(option,
style: TextStyle(
color: Colors.white
),
),
textColor: Colors.white,
onPressed: (){},
),
).toList(),
)
)
);
final countdown = CountdownWidget(
width: MediaQuery.of(context).size.width,
duration: 20,
triviaState: triviaState,
);
final quizBottomContent = Container(
width: MediaQuery.of(context).size.width,
child: Column(
children: <Widget>[quizBottomContentText, quizOptions, countdown], // need countdown
),
);
I've been trying the following but I cant seem to get what I want:
// Column for quizBottomContent
mainAxisAlignment: MainAxisAlignment.spaceBetween,


Wrap your bottom widget in Column inside Expanded (I think, this is what you want)

Related

How to set a custom widget as infowindow when i click on a gmap marker in flutter?

I'm a flutter beginner. What I want to do is.. when I click on a marker I placed on the map, it should show a custom widget with the latlong info and a button( to connect to save somewhere). The infowindow: doesn't accept any widgets too.
What does the ontap() function in addmarker do?
Is there any way to set a custom widget I made to be shown like the infowindow.
the add marker ftn
Future<void> addMarker(
LatLng mLatLng, String mTitle, String mDescription) async {
final Uint8List markerIcon =
await getBytesFromAsset('assets/images/icons/pin.png', 100);
setState(() {
_markers.clear();
_markers.add(Marker(
markerId:
MarkerId((mTitle + "_" + _markers.length.toString()).toString()),
position: mLatLng,
// infoWindow: InfoWindow(
// title: mTitle,
// snippet: mDescription,
// ),
onTap: () {
//getPillInfowindow();
},
icon: BitmapDescriptor.fromBytes(
markerIcon), //BitmapDescriptor.defaultMarker,
));
});
}
the widget that i want to show
Widget getPillInfowindow() {
return AnimatedPositioned(
bottom: 100, right: 0, left: 0,
duration: Duration(milliseconds: 200),
child: Align(
alignment: Alignment.bottomCenter,
child: Container(
margin: EdgeInsets.all(20),
height: 70,
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.all(Radius.circular(50)),
boxShadow: <BoxShadow>[
BoxShadow(
blurRadius: 20,
offset: Offset.zero,
color: Colors.grey.withOpacity(0.5))
]),
child: Row(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Container(
margin: EdgeInsets.only(left: 10),
width: 50,
height: 50,
child: ClipOval(
child: Image.asset('assets/images/icons/pin2.png',
fit: BoxFit.cover))),
Expanded(
child: Container(
margin: EdgeInsets.only(left: 20),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text('title:', //${mTitle}',
style: TextStyle(
color: Colors
.green)),
Text(
'Latitude: ', ,
style: TextStyle(fontSize: 12, color: Colors.grey)),
Text(
'Longitude:',
style: TextStyle(fontSize: 12, color: Colors.grey))
], // end of Column Widgets
), // end of Column
),
),
Padding(
padding: EdgeInsets.all(15),
child: Image.asset(
'assets/images/icons/pin2.png',
)
)
],
),
),
),
);
}

Unable to wrap Text inside Container in Flutter

I have the following tree: Scaffold > Column > Row > Container > Text.
I want the Text to wrap, and The Great Google in most cases told me that Expanded is what i need, but none of the below cases worked for me:
Row wrapped inside Expanded
Container wrapped inside Expanded
Text wrapped inside Expanded
All of the above have the same result.
Here's my code for the page's body:
import 'package:flutter/material.dart';
class HomePage extends StatelessWidget {
const HomePage({super.key});
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: const Color(0xFF282B32),
body: Column(
children: <Widget>[
createRow(
context,
"https://i.stack.imgur.com/6Utrc.jpg?s=256&g=1",
"GuildProtect is a powerful, baterries-included moderation bot for your *safe* server!"
),
createDivider(),
createRow(
context,
"https://cdn.discordapp.com/avatars/967406876029501462/bd3c60dcf55c83fba41b15fba89f798a.webp?size=256",
"This is a very beatiful (because it's pink) avatar of this shitty website creator, enjoy!"
)
]
)
);
}
Row createRow(BuildContext context, String imageUrl, String text) {
const containerHeight = 256.0;
return Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Container(
alignment: Alignment.centerLeft,
height: containerHeight,
padding: const EdgeInsets.only(left: 50, top: 25, bottom: 25),
child: Image.network(imageUrl),
),
Container(
alignment: Alignment.centerRight,
height: containerHeight,
padding: const EdgeInsets.only(right: 50, top: 25),
child: Text(
text,
style: TextStyle(
color: const Color(0xFFFFFCF9),
fontWeight: FontWeight.bold,
fontSize: DefaultTextStyle.of(context).style.apply(fontSizeFactor: 1.3).fontSize,
),
),
),
]
);
}
Divider createDivider() {
return const Divider(
color: Color(0xFF131518),
indent: 30,
endIndent: 30,
thickness: 1,
height: 20,
);
}
}
I also saw some answers on SO recommending to cut the text or show ellipsis, but i dont need this behaviour, i need the text to actually wrap. This video's second solution shows exactly what i want to achieve (and no, the solution from there didn't help).
Any help is appreciated!

In createRow(), wrap the second Container() with Flexible().
Flexible(
child: Container(
alignment: Alignment.centerRight,
height: containerHeight,
padding: const EdgeInsets.only(right: 50, top: 25),
child: Text(
text,
style: TextStyle(
color: const Color(0xFFFFFCF9),
fontWeight: FontWeight.bold,
fontSize: DefaultTextStyle.of(context)
.style
.apply(fontSizeFactor: 1.3)
.fontSize,
),
),
),
)
Lemme know if it worked for your use case.

Why are you seeing this?.
Well, this is because the width of the widgets which you are trying to put, is greater then the screen size.
Possible solutions:
Try to add width property to the second Container in the Row
try to use .fit property, which will fit the image in it's father widget size.
I don't think that wrapping the container in Expanded wouldn't fix the situation as I see the text is too long (the screen has overflowed by 260 pixels).
Try to use TextOverflow as mentioned in link.
Please, let me know if any of my solutions works.

Anywhere you want to use a text and its length is not specified, you may encounter a folding error.
My suggestion is to use Expanded.
This is the output of your code snippet in my simulator
your code Output in mobile
It is enough to wrap the second Container with an Expanded widget (createRow) :
Row createRow(BuildContext context, String imageUrl, String text) {
const containerHeight = 256.0;
return Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Container(
alignment: Alignment.centerLeft,
height: containerHeight,
padding: const EdgeInsets.only(left: 50, top: 25, bottom: 25),
child: Image.network(imageUrl),
),
--> Expanded(
child: Container(
alignment: Alignment.centerRight,
height: containerHeight,
padding: const EdgeInsets.only(right: 50, top: 25),
child: Text(
text,
style: TextStyle(
color: const Color(0xFFFFFCF9),
fontWeight: FontWeight.bold,
fontSize: DefaultTextStyle.of(context).style.apply(fontSizeFactor: 1.3).fontSize,
),
),
),
),
]
);
}
and output:
--> after Wrap Container with Expanded Widget
It is noteworthy that this part of your work is not responsive.
Probably, the texts are too big in my emulator because of the difference made by the DefaultTextStyle.of(context) class.
Anyway, I hope it solved your problem.
full code:
I used MediaQuery for setting fontSize Because no details are provided from the content of the defaultTextStyle class.
import 'package:flutter/material.dart';
class TstPage extends StatelessWidget {
const TstPage({super.key});
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: const Color(0xFF282B32),
body: Column(
children: <Widget>[
createRow(
context,
"https://i.stack.imgur.com/6Utrc.jpg?s=256&g=1",
"GuildProtect is a powerful, baterries-included moderation bot for
your *safe* server!"
),
createDivider(),
createRow(
context,
"https://cdn.discordapp.com/avatars/967406876029501462/bd3c60dcf55c83fba41b15fba89f798a.webp?size=256",
"This is a very beatiful (because it's pink) avatar of this shitty
website creator, enjoy!"
)
]
)
);
}
Row createRow(BuildContext context, String imageUrl, String text) {
const containerHeight = 256.0;
return Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Container(
alignment: Alignment.centerLeft,
height: containerHeight,
padding: const EdgeInsets.only(left: 50, top: 25, bottom: 25),
child: Image.network(imageUrl),
),
Expanded(
child: Container(
alignment: Alignment.centerRight,
height: containerHeight,
padding: const EdgeInsets.only(right: 50, top: 25),
child: Text(
text,
style: TextStyle(
color: const Color(0xFFFFFCF9),
fontWeight: FontWeight.bold,
fontSize: MediaQuery.of(context).size.width*0.04,
),
),
),
),
]
);
}
Divider createDivider() {
return const Divider(
color: Color(0xFF131518),
indent: 30,
endIndent: 30,
thickness: 1,
height: 20,
);
}
}

Flutter: Space above Divider line is not the same as below

Here's my code:
import 'package:flutter/material.dart';
class HomePage extends StatelessWidget {
const HomePage({super.key});
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: const Color(0xFF282B32),
body: Column(
children: <Widget>[
createRow(
context,
"https://i.stack.imgur.com/6Utrc.jpg?s=256&g=1",
"GuildProtect is a powerful, baterries-included moderation bot for your *safe* server!"
),
createDivider(),
createRow(
context,
"https://cdn.discordapp.com/avatars/967406876029501462/bd3c60dcf55c83fba41b15fba89f798a.webp?size=256",
"This is a very beatiful (because it's pink) avatar of this shitty website creator, enjoy!"
)
]
)
);
}
Row createRow(BuildContext context, String imageUrl, String text) {
const containerHeight = 256.0;
return Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Container(
alignment: Alignment.centerLeft,
height: containerHeight,
padding: const EdgeInsets.only(left: 50, top: 25),
child: Image.network(imageUrl),
),
Container(
alignment: Alignment.centerRight,
height: containerHeight,
padding: const EdgeInsets.only(right: 50, top: 25),
child: Text(
text,
style: TextStyle(
color: const Color(0xFFFFFCF9),
fontWeight: FontWeight.bold,
fontSize: DefaultTextStyle.of(context).style.apply(fontSizeFactor: 1.3).fontSize,
),
),
),
]
);
}
Divider createDivider() {
return const Divider(
color: Color(0xFF131518),
indent: 30,
endIndent: 30,
thickness: 1,
height: 20,
);
}
}
Here's the result:
Result
It's becomes clear when looking at divider line near the images that space above divider and up to first image is not the same as space below divider and down to the second image.
I want to divider's height divide by 2 and take the same amount of space below and above divider. Any clue how to do it?

The padding is only applied on top
return Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Container(
alignment: Alignment.centerLeft,
height: containerHeight,
padding: const EdgeInsets.only(left: 50, top: 25),
It would be better to include bottom as well.
padding: const EdgeInsets.only(left: 50, top: 25,bottom:25 ),
I will prefer wrapping the top row with padding widget in this case or using SizedBox/Padding around createDivider

Not click on Container in Stack

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

SingleChildScrollView makes the UI white

I am trying to make my UI scrollable but when i add the SingleChildScrollView i get this white screen not showing anything at all.I should erase the Column from the begining?Use a container?I already search on internet but i don't know what to add.
Here is my code, please tell me what i can erase or add to make it work ..
class _UserProfilesState extends State<UserProfiles> {
#override
#override
Widget build(BuildContext context) {
return Scaffold(
body: SingleChildScrollView(
child: Column(
children: <Widget>[
Expanded(
child: Stack(
children: <Widget>[
Padding(
padding:
EdgeInsets.symmetric(horizontal: 10.0, vertical: 40.0),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
IconButton(
icon: Icon(Icons.arrow_back),
iconSize: 30.0,
color: Colors.black,
onPressed: () => Navigator.pop(context),
),
])),
Positioned(
left: 24,
top: MediaQuery.of(context).size.height / 6.5 - 28,
child: Container(
height: 84,
width: 84,
//profilepic
child: CircleAvatar(
radius: 10,
backgroundImage: NetworkImage(widget.avatarUrl != null
? widget.avatarUrl
: "https://icon-library.com/images/add-image-icon/add-image-icon-14.jpg"),
),
),
),
Positioned(
right: 24,
top: MediaQuery.of(context).size.height / 6.5 + 16,
child: Row(
children: <Widget>[
Container(
height: 32,
width: 100,
child: RaisedButton(
onPressed: () {
Navigator.of(context).push(MaterialPageRoute(
builder: (context) => ChatScreen(
serviceProviderId:
widget.serviceProviderId,
userName: widget.userName,
avatarUrl: widget.avatarUrl,
)));
},
color: Colors.black,
textColor: Colors.white,
child: Text(
"Message",
style: TextStyle(fontWeight: FontWeight.bold),
)),
),
SizedBox(
width: 16,
),
Container(
height: 32,
width: 32,
decoration: BoxDecoration(
image: DecorationImage(
image: NetworkImage(
"https://lh3.googleusercontent.com/Kf8WTct65hFJxBUDm5E-EpYsiDoLQiGGbnuyP6HBNax43YShXti9THPon1YKB6zPYpA"),
fit: BoxFit.cover),
shape: BoxShape.circle,
color: Colors.blue),
),
],
),
),
Positioned(
left: 24,
top: MediaQuery.of(context).size.height / 4.3,
bottom: 0,
right: 0,
child: Container(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text(widget.userName,
style: TextStyle(
color: Colors.black,
fontWeight: FontWeight.bold,
fontSize: 22,
)),
SizedBox(
height: 4,
),
Padding(
padding: const EdgeInsets.all(1.0),
child: Text(
widget.address == "default"
? "No Address yet"
: "${widget.address}",
style: TextStyle(
color: Colors.black,
fontSize: 12,
),
)),
Padding(
padding: const EdgeInsets.all(1.0),
child: Text(
"${widget.categoryName}",
style: TextStyle(
color: Colors.black,
fontSize: 12,
),
)),
],
),
))
],
))
],
),
),
);
}
}

Using Spacer() might also cause this issue

The reason why your UI became white is that SingleChildScrollView allows it child to take as much space as possible. In your Column, one of your children is Expanded, Expanded tries to take as much space as possible. You are making your UI take an infinite amount of space because of that. That's the reason why you are seeing a white screen. The solution here would be to remove Expanded.

according to me and the knowledge I have this happened because the singlechildscrollview here tries to take as much height as it can take so It is creating an issue to solve this wrap the singlechildscrollview in a container and give height&width to the container it solved in my case
Thanks...

I faced similar issues, but after much research I got it working, by ensuring that the body of the scaffold be a Container that defines it's height and width, or Column. After which you can wrapped your any of these with a SingleChildScrollView.
However, in an attempt to insert an Expanded widget as child element, the expanded widget will look for bounded heights of it's parents/root element. And if it doesn't found any, it will thrown an error. A good example is if the root element is a column or a container with an unbounded height. Which is your case, looking at your code