I want to find out why border radius wouldn't apply top half of the widget on Android.
Here is the image on Android
However on the web, it's working like image below.
Does anyone know why?
Code
Center(
child: Card(
elevation: 1.5,
shape: RoundedRectangleBorder(borderRadius: BorderRadius.all(Radius.circular(16.0))),
child: SizedBox(
width: 250.0,
height: 150.0,
child: Column(
children: <Widget>[
Container(
width: double.infinity,
height: 60.0,
color: Colors.pink[200].withOpacity(0.95),
child: Center(
child: Text('Felicity Jones'),
),
),
Expanded(
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 8.0),
child: Center(
child: Text('9:15'),
),
),
)
],
),
),
),
),
If you observe carefully by changing the opacity of the color for time being to:
color: Colors.pink[200].withOpacity(0.2),
You'll see that the top left and top right corners are cut-off and not filled by the color:
In order to avoid this, use Card widget's clipBehavior: Clip.antiAlias, property that covers all corners of the card with the given color. Here's the updated result:
Hope this answers your question.
You can try the following:
Center(
child:
Card(
elevation: 1.5,
shape: RoundedRectangleBorder(borderRadius: BorderRadius.all(Radius.circular(16.0))),
child: SizedBox(
width: 250.0,
height: 150.0,
child: Column(
children: <Widget>[
Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.vertical(
top: new Radius.circular(16.0)
),
color: Colors.pink[200].withOpacity(0.95),
),
width: double.infinity,
height: 60.0,
child: Center(
child: Text('Felicity Jones'),
),
),
Expanded(
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 8.0),
child: Center(
child: Text('9:15'),
),
),
)
],
),
),
),
),
Note that the color was moved inside the BoxDecoration as it will fail to compile otherwise.
I kept the shape attribute so that the lower part of the card will be rounded as well. You could tinker with that and remove it, if necessary.
Edit: In your case like #Darshan mentioned you can just set clipBehavior: Clip.antiAlias in Card widget.
You can use also use ClipRRect to force the child to have the given border radius, if you don't have clipBehavior.
Center(
child: Card(
elevation: 1.5,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(16.0),
),
child: ClipRRect(
borderRadius: BorderRadius.circular(16.0),
child: SizedBox(
width: 250.0,
height: 150.0,
child: Column(
children: <Widget>[
Container(
width: double.infinity,
height: 60.0,
color: Colors.pink[200].withOpacity(0.95),
child: Center(
child: Text('Felicity Jones'),
),
),
Expanded(
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 8.0),
child: Center(
child: Text('9:15'),
),
),
)
],
),
),
),
),
)
Related
I am using the Stack widget in my app and it is working great but now I have a problem with wrapping this Stack widget inside ListView Widget.
I am getting error
RenderBox was not laid out: RenderPointerListener#20d10 relayoutBoundary=up7 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1979 pos 12: 'hasSize'
My Stack Widget is
Widget? stackW() {
return Stack(
alignment: Alignment.center,
children: <Widget>[
Positioned(
top: 70,
width: MediaQuery.of(context).size.width * .9,
height: 150,
child: Center(
child: Container(
width: MediaQuery.of(context).size.width * .9,
decoration: BoxDecoration(
color: Colors.grey[200],
borderRadius: BorderRadius.circular(15)),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
const Text(
"Product Designer",
style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
),
const SizedBox(
height: 10,
),
],
),
),
),
),
Positioned(
top: 30,
left: MediaQuery.of(context).size.width / 2.5,
width: 80,
height: 80,
child: CircleAvatar(
backgroundColor: Colors.white,
child: CircleAvatar(
backgroundColor: Colors.green[100],
radius: 35,
child: const FaIcon(
FontAwesomeIcons.apple,
size: 30,
color: Colors.black,
),
),
),
),
],
);
}
When I am passing stackWidget directly in body then it is working fine but after wrapping inside ListView, it is creating problem.
so Please guide me to achieve my listview data with Stack Widget.
body: stackW()!, //working
body: ListView(
scrollDirection: Axis.vertical,
children: [
stackW()!,
],
),
``` //not working
Both widgets are getting infinite height, you can wrap stackW() with SizedBox widget.
body: LayoutBuilder(
builder: (context, constraints) => ListView(
scrollDirection: Axis.vertical,
children: [
SizedBox(
height: constraints.maxHeight,
width: constraints.maxWidth,
child: stackW()!,
)
],
),
),
I'm coding a layout like homepage from Linkedin, Twitter, etc (example here) with Flutter for Web, but the Profile Tab it's not fixing on top of layout. I need something like gravity property (Android), I tried usign Align class, CrossAxisAlignment, MainAxisAlignment but it didn't work. Also I tried to set a margin/padding subtracting the height of the context with container, but it didn't work either
return SingleChildScrollView(
scrollDirection: Axis.vertical,
child: Padding(
padding: EdgeInsets.only(top: 30, left: 50, right: 50),
child: Row(children: [
Expanded(
flex: 1,
child: Column(
children: [
Container(
margin: EdgeInsets.only(right: 50),
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(15),
),
child: Center(child: Text('Trend Stories')))
],
),
),
Expanded(
flex: 2,
child: Column(
children: [
Container(
margin: EdgeInsets.only(right: 50),
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(15),
),
height: MediaQuery.of(context).size.height,
child: Center(child: Text('Trend Stories')))
],
),
),
Expanded(
flex: 1,
child: Column(
children: [
Container(
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(15),
),
height: MediaQuery.of(context).size.height,
child: Center(child: Text('Trend Stories')))
],
),
),
])));
code
I have this code as profile screen which I need it to be able to fill a text like "HELLO" on this code example. But when I put a lot of text in it, the screen become overflow.
The problem is everytime I put SingleChildScrollView to avoid the overflow, I got another error instead.
Please tell me how I can fix this problem.
#override
Widget build(BuildContext context) {
return Container(
child: SafeArea(
child: FutureBuilder<Profile>(
future: dataService.getHttp(),
builder: ...
),
),
);
}
Widget _buildView(detail) {
return Stack(
alignment: Alignment.center,
children: <Widget>[
Column(
children: <Widget>[
Container(
height: 200.0,
child: Center(
child: Image.network(
'https://i.imgur.com/2F3Al82.jpg',
fit: BoxFit.cover,
height: double.infinity,
width: double.infinity,
),
),
),
Padding(
padding: EdgeInsets.fromLTRB(0.0, 50.0, 0.0, 0.0),
),
Expanded(
child: Container(
color: Colors.white,
child: Column(
children: <Widget>[
Text('HELLO'),
]
),
)
),
],
),
Positioned(
top: 150.0,
child: Container(
height: 100.0,
width: 100.0,
decoration: BoxDecoration(
shape: BoxShape.circle,
image: new DecorationImage(
fit: BoxFit.fill,
image: NetworkImage('https://i.imgur.com/2F3Al82.jpg'),
),
),
),
)
],
);
}
this is the error
You are getting this error because of the Expanded widget. SingleChildScrollView allows for infinite height and expanded will take up as much space as it can these two thing are incompatible if you remove the Expanded widget it should work. If you want some space around that container I suggest the Containers margin property.
In the wanted view, there is a grid list with two columns and its items design needs to set an image in the card's background and cards have some radius, Image is network image but card size is fluctuating according to the network image. I tried this too but not working.
Here is the code
Container(
child: Column(
children: <Widget>[
Expanded(
child: Card(
clipBehavior: Clip.antiAlias,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(10.0),
),
child: ClipRRect(
borderRadius: BorderRadius.circular(10.0),
child: Image.network(
event_response.imageLogoUrl +
event_response.eventList[position].event_logo,
fit: BoxFit.cover,
),
)),
),
Container(
padding: const EdgeInsets.all(5.0),
child :Text('${event_response.eventList[position].eventName}'),
)
],
);},),),],),);
Here I want but in 2 columns.
here I'm getting
In order to round the corners of the images, you have to wrap it in ClipRRect widget and give it border radius same as your card.
Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
Expanded(
child: Card(
clipBehavior: Clip.antiAlias,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(10.0),
),
child: ClipRRect(
borderRadius: BorderRadius.circular(10.0),
child: Image.network(
event_response.imageLogoUrl +
event_response.eventList[position].event_logo,
fit: BoxFit.cover,
),
)),
),
Container(
padding: const EdgeInsets.all(5.0),
child: Text('${event_response.eventList[position].eventName}'),
)
]);
Wrap your Card into Expanded and use BoxFit.cover for your Image.
Column(children: <Widget>[
Expanded(
child: Card(
clipBehavior: Clip.antiAlias,
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10.0),),
child: Image.network(event_response.imageLogoUrl+event_response.eventList[position].event_logo, fit: BoxFit.cover,
)
),
),
Container(
padding: const EdgeInsets.all(5.0),
child :Text('${event_response.eventList[position].eventName}'),
)
I want to add a Flutter Container in top of another Container and top container will be transparent. Basically I do that in native Android using FrameLayout. How to implement this in Flutter?
Stack is most likely what you want.
Stack allows to put widgets on the top of others however you like. And, combined with Positioned, have custom positions.
Let's draw a real frame in flutter :
Stack(
alignment: Alignment.center,
children: <Widget>[
Container(
width: 200.0,
height: 300.0,
decoration: BoxDecoration(
color: Colors.black12,
border: Border.all(
color: Colors.black,
width: 3.0,
),
),
),
Container(
width: 100.0,
height: 100.0,
color: Colors.blue,
),
Positioned(
bottom: 10.0,
right: 10.0,
child: Card(
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Text("Title"),
),
),
)
],
),
You can use Align to better control the position of your widget based on alignment.
Stack(
children: <Widget>[
Align(alignment: Alignment.center, child: Text("Center"),),
Align(alignment: Alignment.topRight, child: Text("Top\nRight"),),
Align(alignment: Alignment.centerRight, child: Text("Center\nRight"),),
Align(alignment: Alignment.bottomRight, child: Text("Bottom\nRight"),),
Align(alignment: Alignment.topLeft, child: Text("Top\nLeft"),),
Align(alignment: Alignment.centerLeft, child: Text("Center\nLeft"),),
Align(alignment: Alignment.bottomLeft, child: Text("Bottom\nLeft"),),
Align(alignment: Alignment.topCenter, child: Text("Top\nCenter"),),
Align(alignment: Alignment.bottomCenter, child: Text("Bottom\nCenter"),),
Align(alignment: Alignment(0.0, 0.5), child: Text("Custom\nPostition", style: TextStyle(color: Colors.red, fontSize: 20.0, fontWeight: FontWeight.w800),),),
],
);
Output: