Develop Reference

Blur background of image with it's foreground in flutter

I want to be able to replicate this kind of effect in flutter but can't seem to figure out how to do it.
I have tried to use the BlurryContainer package but it's not working.
So far, I have resorted to using a plain background for the background on which I have placed an image as foreground.
This is what I want to achieve:

You can create this type of UI using a stack with two copies of the image, one as the foreground which isn't blurred and another in the background with an ImageFilter.blur.
Here is an example:
Widget build(BuildContext context) {
return Stack(
children: [
Align(
alignment: Alignment.center,
child: SizedBox(
height: double.infinity,
width: double.infinity,
child: ClipRRect(
child: ImageFiltered(
imageFilter: ImageFilter.blur(sigmaX: 10, sigmaY: 10),
child: Image.network(
'https://images.unsplash.com/photo-1672162724304-866bd48a3d6f?ixlib=rb-4.0.3&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=686&q=80',
fit: BoxFit.cover,
),
),
),
),
),
Align(
alignment: Alignment.center,
child: Expanded(
child: Image.network(
'https://images.unsplash.com/photo-1672162724304-866bd48a3d6f?ixlib=rb-4.0.3&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=686&q=80',
fit: BoxFit.contain,
),
),
)
],
);
}
And here is the result using that unsplash image:

this is my code and i want to know how to make the picture automatically boreder every phone

i want the height and width to adjust with each phone so the picture will fit right in every phone.
i am just writing more so the post would get submitted the qustion is simple
//
import 'package:flutter/material.dart';
void main() {
runApp(
MaterialApp(
home: Scaffold(
backgroundColor: Colors.red,
appBar: (AppBar(
title: Center(
child: Text('lord thunder'),
),
backgroundColor: Colors.white60,
)),
body: Center(
child: Container(
height: MediaQuery.of(context).size.height,
width: MediaQuery.of(context).size.width,
child: FittedBox(
child: Image.asset('images/images.jpg'),
fit: BoxFit.fill,
),
),
),
),
),
);
``
i was trying to make the picture fit the body perfectly on each phone.

You can use BoxFit.cover propertry inside DecorationImage
Container(
height: MediaQuery.of(context).size.height,
width: MediaQuery.of(context).size.width,
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage("images/images.jpg"),
fit: BoxFit.cover
)
),
),

How to change the expanded height in flutter?

I am new to flutter learning a flutter UI build from youtube. While I am using the expanded widget, I found the output is not what I want, just wanna ask is there any way to limit the height of the expanded widget.
This is my current UI looks like.
SafeArea(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Align(
alignment: Alignment.topRight,
child: Container(
alignment: Alignment.center,
height: 52,
width: 52,
decoration: BoxDecoration(
color: Color(0xFFF2BEA1),
shape: BoxShape.circle,
),
child: SvgPicture.asset("icons/icons/menu.svg"),
),
),
Text(
"\t\tMake Cents out of \n\t\tSolar",
style: Theme.of(context).textTheme.subtitle1!.copyWith(
fontWeight: FontWeight.w900,
fontSize: 38,
color: Colors.blueGrey[900]),
),
Padding(
padding: const EdgeInsets.all(20.0),
child: Container(
padding: EdgeInsets.symmetric(horizontal: 30, vertical: 5),
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(29.5),
),
child: TextField(
decoration: InputDecoration(
hintText: "Search",
icon: SvgPicture.asset("icons/icons/search.svg"),
border: InputBorder.none,
),
),
),
),
Expanded(
child: GridView.count(
crossAxisCount: 2,
childAspectRatio: .85,
children: <Widget>[
CategoryCard(
title: "Promotion of the day",
svgSrc: "icons/icons/Hamburger.svg",
press: () {},
),
CategoryCard(
title: "Promotion of the day",
svgSrc: "icons/icons/Hamburger.svg",
press: () {},
),
],
),
),
Container(
padding: EdgeInsets.fromLTRB(20.0, 0, 0, 0),
child: Text(
"Solar Panel",
style: Theme.of(context).textTheme.subtitle1!.copyWith(
fontWeight: FontWeight.w900,
fontSize: 20,
color: Colors.black),
),
),
],
I wanna know is there any way to control the height of the expanded widget so that my container with text can connect right below the custom Category Card. Or should I use another widget instead of using the expanded widget?

By definition, the Expanded widget will fill up all the remaining screen space. If you instead want to use a set size, you can use a Container or SizedBox with their width and height parameters.
To get a better understanding of constraints in general, I suggest you check out this flutter documentation page all about constraints.

To set a minimum and maximum size (width and height) for a widget you can use ConstrainedBox widget, learn more about it here

You can't control the height of the Expanded widget. It takes all the space that is available on the screen. I suggest you to use SizedBox and explicitly provide the required height and set width as double.infinity.

I had same issue. I suggest ConstrainedBox widget to set minimum and maximum heights.

How to make an icon rest on the edge of container flutter

How do I make an icon rest on the bottom of a container, just like in the picture. So that even when I scroll the page and the container moves. The icon moves with it in that particular position.
The icon in this page is the empty profile icon resting on the container with the exes image. I don't want my container to have an image though.
Just color image of the container and round icon.
Image of the container and icon even when scrolled.
NOTE. I don't want the container to be the app bar. Just a container on its own under the app bar. I'm only showing this picture so u can see what I'm talking about.

did you try this
Align(
alignment: Alignment.topCenter,)

Did you want it like this :
SingleChildScrollView(
child: Column(
children: <Widget>[
Container(
height: 300,
color: Colors.cyan[900],
),
Stack(
clipBehavior: Clip.none,
alignment: AlignmentDirectional.topCenter,
children: [
Container(
width: double.infinity,
color: Colors.grey[900],
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
children: [
const SizedBox(
height: 150, // +50 below circle Container
),
const Text(
'Happiness',
style: TextStyle(color: Colors.white, fontSize: 32),
),
const SizedBox(
height: 30,
),
Container(
height: 200,
width: 300,
color: Colors.amber[900],
),
const SizedBox(
height: 30,
),
Container(
height: 200,
width: 300,
color: Colors.red[900],
),
],
),
),
Positioned(
top: -100,
child: Container(
height: 200,
width: 200,
decoration: const BoxDecoration(
shape: BoxShape.circle,
image: DecorationImage(
image: AssetImage(
'assets/images/cyanide.png',
)),
color: Colors.deepPurple,
),
),
),
],
),
],
),
),

may be what you need is to use CustomScrollView and SilverAppBar with bottom:
here is the reference: example
plus transform

Stack Widget Error when using SingleChildScrollView

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.