I'm creating a notification center for my application, and it contains a bit of long strings for the title and the body, and it always causes overflow, I've tried using Expanded widgets, and these following stack over flow questions: Question 1, Question 2 But I cannot apply it to my code, here is what it looks like right now:
I get the text from my firebase cloud firestore, and I'm outputting the texts using a listview.
The title text is this: "Allen Indefenzo has rescinded consent for you to access his/her data"
The body text is this : "He/she has removed all your access and you will no longer be able to view / change his data, to have access again ask for the user to give you his/her special code again."
Here is my code:
Container(
color: Colors.white,
child: StreamBuilder(
stream: db
.collection('users')
.document(userData.userID)
.collection('notifications')
.snapshots(),
builder: (BuildContext context, AsyncSnapshot snapshot) {
if (!snapshot.hasData) {
return Center(
child: CircularProgressIndicator(),
);
}
if (snapshot.data.documents.length != 0) {
return ListView.builder(
itemCount: snapshot.data.documents.length,
itemBuilder: (BuildContext context, int index) {
return Container(
child: Row(
children: <Widget>[
Container(
height: 150,
width: 100,
child: Image(
image: NetworkImage(
snapshot.data.documents[index]['dpURL']), fit: BoxFit.contain,
),
),
Column(
children: <Widget>[
Container(
height: 50,
width: MediaQuery.of(context).size.width * 0.8,
child:
Text(snapshot.data.documents[index]['title']),
),
Container(
height: 50,
width: MediaQuery.of(context).size.width * 0.8,
child:
Text(snapshot.data.documents[index]['body']),
),
],
),
],
),
);
},
);
}
},
),
),
Any help is appreciated and if you can explain it would be amazing! Thank you so much!
try to wrap your Column inside Expanded,
Container(
child: Row(
children: <Widget>[
Container(
height: 150,
width: 100,
child: Image(
image: NetworkImage(
'https://encrypted-tbn0.gstatic.com/images?q=tbn%3AANd9GcQLBtBU3nUOK7osT41ZsQhP4VBV7fd9euqXvXVKQH0Q7bl4txeD'),
fit: BoxFit.contain,
),
),
Expanded(
child: Column(
children: <Widget>[
Text(
'Reallly looooooooooooooooooooooooooooooong textttttttttttttttttttttttttttttttttttttttttttttttt'),
Text(
'Reallly looooooooooooooooooooooooooooooong textttttttttttttttttttttttttttttttttttttttttttttttt'),
],
),
),
],
),
);
output:
Additionally if you want to limit lines of Text use,
Text(
'Reallly looooooooooooooooooooooooooooooongtextttttttttttttttttttttttttttttttttttttttttttttttt',
maxLines: 2,
overflow: TextOverflow.ellipsis,
),
Output:
Just wrap your column inside expanded widget
Expanded(child:
Column(
children: <Widget>[
Container(
height: 50,
width: MediaQuery.of(context).size.width * 0.8,
child:
Text(snapshot.data.documents[index]['title']),
),
Container(
height: 50,
width: MediaQuery.of(context).size.width * 0.8,
child:
Text(snapshot.data.documents[index]['body']),
),
],
),
),
Expanded widget is useful when you want to fill all the remaining space when a column or row widget have 2 or more child widgets. so wrapping a child inside an expanded widget will fill up the remaining space accordingly.
return Container(child: Row(
children: <Widget>[
Container(
height: 150,
width: 100,
child: Image(
image: NetworkImage(snapshot.data.documents[index]['dpURL']), fit: BoxFit.contain,
),
),
new Expanded(
child: Column(
children: <Widget>[
Padding(
padding: const EdgeInsets.all(8.0),
child: TitleText(
text:snapshot.data.documents[index]['title'] ,
maxLine: 5,
),
),
Container(
height: 50,
width: MediaQuery.of(context).size.width * 0.8,
child: TitleText(
text:snapshot.data.documents[index]['body']),
),
],
),
),
],
),
);
Related
I want the scroll page to work when the keyboard is opened, but it does not work when the keyboard is opened, the user needs to see what he is typing, I am making a login page, when the keyboard opens, the scrollview will work, I used the same code in my other project, but it works there, it just does not work in my project, what could be the reason for this?
Edit: What I want to do is, when the keyboard pops up, I should be able to scroll the screen
My Code:
Scaffold(
resizeToAvoidBottomInset: true,
body: Stack(
children: [
SafeArea(
child: SingleChildScrollView(
controller: scrollController,
child: Container(
padding: MediaQuery.of(context).size.width > webScreenSize
? EdgeInsets.symmetric(
horizontal: MediaQuery.of(context).size.width / 3)
: const EdgeInsets.symmetric(
horizontal: 15,
),
height: deviceHeight,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Padding(
padding: const EdgeInsets.only(top: 35.0),
child: SvgPicture.asset(
"assets/bahce.svg",
color: primaryColor,
height: 64.0,
),
),
Container(
height: deviceHeight * 0.65,
width: double.infinity,
margin: EdgeInsets.symmetric(horizontal: 20),
child: LayoutBuilder(
builder: (ctx, contsraints) {
return Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
SizedBox(
height: contsraints.maxHeight * 0.01,
),
Container(
.......
),
SizedBox(
height: contsraints.maxHeight * 0.05,
),
Container(
height: contsraints.maxHeight * 0.12,
...................
),
Container(
width: double.infinity,
height: contsraints.maxHeight * 0.12,
......button
),
SizedBox(
height: contsraints.maxHeight * 0.15,
),
RichText(
text: TextSpan(
......,
children: [
TextSpan(
..onTap = navigateToSignup,
),
],
),
),
],
);
},
),
),
],
),
),
),
),
],
),
);
Remove other widgers directly use sigle child scroll view as a child of body
Remove the Stack widget after your Scaffold Widget. It is an un-used widget in your code.
Scaffold
SafeArea
SingleChildScrollView
Other widgets
If SingleChildScrollView works, let me know.
I want to have a container with a flexible body (red) height and a fixed button height (gray).
The complete container should be as small as possible and have a max height.
If the content is overflowing the max height it should be scrollable.
I'm new to flutter, so I have no idea how to achieve this.
I tried it with a ConstraintBox with maxHeight, but then the whole container is bigger then it have to be, when the content is small.
return Container(
child: Column(
children: [
ConstrainedBox(
maxHeight: 400
child: //SomeWidget that could overflow
),
Container(
height: 150,
child: Center(
child: TextButton(child: Text('OK'))
),
)
],
),
);
Can someone help?
You can set constraints of your Container. Also you can use Flexible and SingleChildScrollView
Container(
constraints: BoxConstraints(
maxHeight: 300,
),
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Flexible(
child: SingleChildScrollView(
child: Column(
children: [
//SomeWidget that could overflow
],
),
)),
Container(
color: Colors.amber,
height: 150,
child:
Center(child: TextButton(onPressed: () {}, child: Text('OK'))),
)
],
),
)
I've achieved it now, with that code:
Container(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Flexible(
child: SingleChildScrollView(
child: //SomeWidget that could overflow
),
),
Container(
alignment: Alignment.bottomCenter,
child: TextButton(
child: Text('OK')
)
)
]
)
)
According to your UI i think this one will be perfect, and let me know if you need any changes. use constraints to change size.
final widgets = List.generate(
12,
(index) => Container(
height: 100,
color: index % 2 == 0 ? Colors.cyanAccent : Colors.greenAccent,
child: Text("item $index"),
),
);
#override
Widget build(BuildContext context) {
return Scaffold(
body: LayoutBuilder(
builder: (context, constraints) => Stack(
children: [
Align(
alignment: Alignment.topCenter,
child: SizedBox(
///* used 90% of screen for items
height: constraints.maxHeight * .9,
child: ListView(
children: [
Center(child: Text("inside listView")),
///your widgets
...widgets,
Center(child: Text("End of listView")),
],
),
),
),
Positioned(
bottom: 0,
left: 0,
right: 0,
child: Container(
color: Colors.grey.withOpacity(.3),
///* used 10% of screen for Button
height: constraints.maxHeight * .1,
child: Center(
child: TextButton(
child: Text('OK'),
onPressed: () {},
),
),
),
),
],
),
),
);
}
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 try to make design of page of display comment. I need make page design is as follows: list at up and then Text Field at the bottom.So user will can see all comment and send new comment.
Something like photo:
but I have same problem with display.
This is my code:I make it like that now but now I can see list just without text field at the bottom
#override
Widget build(BuildContext context) {
return FutureBuilder<List<Flowerdata>>(
future: fetchFlowers(),
builder: (context, snapshot) {
if (!snapshot.hasData) return Center(
child: CircularProgressIndicator()
);
return ListView(
children: snapshot.data
.map((data) => Column(children: <Widget>[
GestureDetector(
onTap: ()=>{
getItemAndNavigate(data.id, context)
},
child: Row(
children: [
Container(
width: 100,
height: 100,
margin: EdgeInsets.fromLTRB(10, 0, 10, 0),
child: ClipRRect(
borderRadius: BorderRadius.circular(8.0),
child:
Image.network(data.flowerImageURL,
width: 200, height: 100, fit: BoxFit.cover,))),
Flexible(child:
Text(data.flowerName,
style: TextStyle(fontSize: 18))
),
]),),
Divider(color: Colors.black),
],))
.toList(),
);
Container(
width: 280,
padding: EdgeInsets.all(10.0),
child: TextField(
controller: naameController,
autocorrect: true,
decoration: InputDecoration(hintText: 'Enter Your Name Here'),
)
);
},
);
}
How can I arrange the items correctly?
First, your Container widget is unreachable, you should fix it then you can wrap your widgets with Column and wrap ListView with Expanded widget after giving height to Container. It will fix your problem.
But i have some suggestions about ListView. Why you did not use ListView.separated? If you use separated method you can delete map and your Divider.
Also when i looked your design, your list items looks like a card. You can use Card widget beside of GestureDetector.
I hope this will help you, if not i will glad to help you.
Edit: Here is sample code based on your question and my answer;
Column(
children: [
Expanded(
child: ListView.builder(
itemCount: snapshot.data.length,
itemBuilder: (BuildContext context, int i) {
InkWell(
onTap: () => getItemAndNavigate(snapshot.data[i].id, context),
child: Card(
child: Row(
children: <Widget>[
Container(
width: 100,
height: 100,
margin: EdgeInsets.fromLTRB(10, 0, 10, 0),
child: ClipRRect(
borderRadius: BorderRadius.circular(8.0),
child: Image.network(snapshot.data[i].flowerImageURL,
width: 200, height: 100, fit: BoxFit.cover,),
),
),
Flexible(
child: Text(
snapshot.data[i].flowerName,
style: TextStyle(fontSize: 18),
),
),
]
),
),
);
},
),
),
Container(
width: 280,
padding: EdgeInsets.all(10.0),
child: TextField(
autocorrect: true,
decoration: InputDecoration(hintText: 'Enter Your Name Here'),
),
),
],
),
You are placing the TextField in the position after returning ListView, which make it dead code. You can add it at the end of your ListView children list or place a Stack outside to place both the ListView and TextField inside.
I am tring to create ui as below image. but button hide behind the list. Also faces issue button not click when used Positioned widget for button.Please suggest how to create below UI using Stack widget with ListView & Floating button.
UI
Container(
color: Colors.grey,
child: Column(
children: <Widget>[
Stack(
children: <Widget>[
Column(
children: <Widget>[
Container(
height: 250.0,
width: MediaQuery.of(context).size.width,
child: Image.asset(
"images/1.jpg",
fit: BoxFit.cover,
),
)
],
),
Column(
crossAxisAlignment: CrossAxisAlignment.end,
children: <Widget>[
Container(
height: 220.0,
),
Container(
padding: EdgeInsets.only(right: 15.0),
child: FloatingActionButton(
onPressed: () {},
child: Icon(Icons.favorite),
),
),
],
),
Column(
children: <Widget>[
Container(
height: 250.0,
),
Container(
height: MediaQuery.of(context).size.height - 250.0,
child: ListView.builder(
shrinkWrap: true,
itemBuilder: (context, index) {
return Card(
child: ListTile(
title: Text("Title $index"),
leading: Icon(Icons.home),
),
);
},
itemCount: 15,
),
),
],
)
],
),
],
),
);
As per documentation (https://docs.flutter.io/flutter/widgets/Stack-class.html):
The stack paints its children in order with the first child being at the bottom
So your Stack children's order is wrong. Your current order is:
Header
Button
List
But it should be:
Header
List
Button
Otherwise list is overlapping button.