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I'm trying to make a music app and I'm in trouble with modifying positions of 'Playlist of the week' text and the Listview of the images right now. I want to make those two properties more upwards but I have no idea what to do.
This is my home.dart file
import 'package:flutter/material.dart';
import 'package:secondlife_mobile/PageViewHolder.dart';
import 'package:provider/provider.dart';
class MyHomePage extends StatefulWidget {
const MyHomePage({super.key});
#override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
final PageStorageBucket bucket = PageStorageBucket();
late PageViewHolder holder;
late PageController _controller;
double fraction =
0.57; // By using this fraction, we're telling the PageView to show the 50% of the previous and the next page area along with the main page
#override
void initState() {
super.initState();
holder = PageViewHolder(value: 2.0);
_controller = PageController(initialPage: 2, viewportFraction: fraction);
_controller.addListener(() {
holder.setValue(_controller.page);
});
}
int index = 1;
#override
Widget build(BuildContext context) {
return SafeArea(
child: Scaffold(
backgroundColor: const Color.fromARGB(255, 223, 234, 244),
appBar: AppBar(
backgroundColor: Colors.transparent,
centerTitle: true,
title: const Text('AppBar'),
),
body: SingleChildScrollView(
child: SizedBox(
height: MediaQuery.of(context).size.height,
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const SizedBox(
height: 30,
),
const Padding(
padding: EdgeInsets.symmetric(horizontal: 35),
child: Text(
'Playlist for you',
style: TextStyle(
fontSize: 20,
fontWeight: FontWeight.w400,
),
),
),
const SizedBox(height: 35),
Container(
child: Center(
child: AspectRatio(
aspectRatio: 1,
child: ChangeNotifierProvider<PageViewHolder>.value(
value: holder,
child: PageView.builder(
controller: _controller,
itemCount: 4,
physics: const BouncingScrollPhysics(),
itemBuilder: (context, index) {
return MyPage(
number: index.toDouble(),
fraction: fraction,
);
}),
),
),
),
),
////Your Playlist of the week text
const Padding(
padding: EdgeInsets.symmetric(horizontal: 35),
child: Text(
'Playlist of the week',
style: TextStyle(
fontSize: 17,
fontWeight: FontWeight.w600,
),
),
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 35),
child: SingleChildScrollView(
child: Column(
children: [
SizedBox(
height: 150,
child: ListView(
scrollDirection: Axis.horizontal,
children: <Widget>[
InkWell(
onTap: () {},
child: Ink(
child: SizedBox(
height: 160.0,
width: 200.0,
child: Image.asset(
'assets/images/album1.jpg',
height: 160.0,
width: 200.0,
),
),
),
),
const SizedBox(
width: 30,
),
InkWell(
onTap: () {},
child: Ink(
child: SizedBox(
height: 160.0,
width: 200.0,
child: Image.asset(
'assets/images/album2.jpg',
height: 160.0,
width: 200.0,
),
),
),
),
const SizedBox(
width: 30,
),
InkWell(
onTap: () {},
child: Ink(
child: SizedBox(
height: 160.0,
width: 200.0,
child: Image.asset(
'assets/images/album3.jpg',
height: 160.0,
width: 200.0,
),
),
),
),
const SizedBox(
width: 30,
),
InkWell(
onTap: () {},
child: Ink(
child: SizedBox(
height: 160.0,
width: 200.0,
child: Image.asset(
'assets/images/album4.jpg',
height: 160.0,
width: 200.0,
),
),
),
),
const SizedBox(
width: 30,
),
InkWell(
onTap: () {},
child: Ink(
child: SizedBox(
height: 160.0,
width: 200.0,
child: Image.asset(
'assets/images/album5.jpg',
height: 160.0,
width: 200.0,
),
),
),
),
],
),
),
],
),
),
),
],
),
),
),
),
);
}
}
class MyPage extends StatelessWidget {
final number;
final double? fraction;
const MyPage({super.key, this.number, this.fraction});
#override
Widget build(BuildContext context) {
double? value = Provider.of<PageViewHolder>(context).value;
double diff = (number - value);
// diff is negative = left page
// diff is 0 = current page
// diff is positive = next page
//Matrix for Elements
final Matrix4 pvMatrix = Matrix4.identity()
..setEntry(3, 2, 1 / 0.9) //Increasing Scale by 90%
..setEntry(1, 1, fraction!) //Changing Scale Along Y Axis
..setEntry(3, 0, 0.004 * -diff); //Changing Perspective Along X Axis
final Matrix4 shadowMatrix = Matrix4.identity()
..setEntry(3, 3, 1 / 1.6) //Increasing Scale by 60%
..setEntry(3, 1, -0.004) //Changing Scale Along Y Axis
..setEntry(3, 0, 0.002 * diff) //Changing Perspective along X Axis
..rotateX(1.309); //Rotating Shadow along X Axis
return Stack(
fit: StackFit.expand,
alignment: FractionalOffset.center,
children: [
Transform.translate(
offset: const Offset(0.0, -47.5),
child: Transform(
transform: pvMatrix,
alignment: FractionalOffset.center,
child: Container(
decoration: BoxDecoration(boxShadow: [
BoxShadow(
color: Colors.grey.withOpacity(0.5),
blurRadius: 11.0,
spreadRadius: 4.0,
offset: const Offset(
13.0, 35.0), // shadow direction: bottom right
)
]),
child: Image.asset(
"assets/images/image_${number.toInt() + 1}.jpg",
fit: BoxFit.fill),
),
),
),
],
);
}
}
And this is the image that I'm expecting right now.
Yeah, I solved it with wrapping the Padding of both text and the ListView with Transform.translate and did some tinkering with the offset.
Thank God I solved this! :)
Try to place a column inside the singlechildscrollview and define mainaxisalignment as min
Set height property of Container widget wrapping PageView.
What's the right way to animate a change in size of a Stack widget?
The first idea was to wrap the Stack with a SizeTransition:
Widget build(BuildContext context) {
return Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
SizeTransition(
sizeFactor: _height, // Just a Tween<double>(begin: 200, end: 400)
axis: Axis.vertical,
axisAlignment: -1,
child: Stack(
children: [
Positioned(
bottom: 10,
left: 10,
child: Container(width: 50, height: 50, color: Colors.blue),
),
Positioned(
top: 10,
right: 10,
child: Container(width: 50, height: 50, color: Colors.green),
),
],
),
),
],
);
}
But running the snippet causes the following error:
'package:flutter/src/rendering/stack.dart': Failed assertion: line 588 pos 12: 'size.isFinite': is not true.
So, apparently, that's not the right way to do it. Questions now is: How do you animate resizing of a Stack?
Wrapping the Stack with a SizedBox would fix the error message, but then, how do you get the size from SizedTransition to set the proper size of a SizedBox?
You can use AnimatedContainer as parent of Stack widget by providing height or width one you like to change over time.
AnimatedContainer(
color: Colors.purple,
duration: const Duration(milliseconds: 200),
height: height,
child: Stack(
children: [
Positioned(
bottom: 10,
left: 10,
child: Container(width: 50, height: 50, color: Colors.blue),
),
Positioned(
top: 10,
right: 10,
child: Container(width: 50, height: 50, color: Colors.green),
),
],
),
),
The asset image is 200x200px, but when it used in leading of ListTile it's not fitted as axpected.
The rendered image looks this way. How to display it proportioanlly 90x90 as it's defined in Image height and width properties?
Card(
key: ValueKey(favorites[index]),
margin: EdgeInsets.all(20),
child: ListTile(
leading: kNoImage,
title: Text(favorites[index]),
subtitle: Text(favorites[index]),
trailing: IconButton(
icon: Icon(Icons.close),
onPressed: () {
debugPrint('entry deleted');
},
),
),
);
const kNoImage = Image(
image: AssetImage('assets/no-user-image.png'),
height: 90,
width: 90,
fit: BoxFit.cover,
);
Change the value of fit to something like BoxFit.scaleDown or BoxFit.contain to get the desired result. See the BoxFit docs to see what these values mean.
The max height for leading widget for your case is ≈56px.
So, if you want to explicitly want to keep it 90, I'd suggest you to make your own ListTile with Row() and Column() which is pretty easy.
This is what I found in ListTile(),
final Offset baseDensity = visualDensity.baseSizeAdjustment;
if (isOneLine)
return (isDense ? 48.0 : 56.0) + baseDensity.dy;
if (isTwoLine)
return (isDense ? 64.0 : 72.0) + baseDensity.dy;
return (isDense ? 76.0 : 88.0) + baseDensity.dy;
I prefer not to use ListTile because of it default behavior. Therefor, I prefer
on dartPad or on Gist
Custom ListTile
Card(
elevation: 8,
child: Container(
width: double.infinity,
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(defaultBorderRadiusCircular),
),
padding: const EdgeInsets.symmetric(horizontal: 8.0, vertical: 6),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Row(
children: [
SizedBox(
width: 90.0,
height: 90.0,
child: ClipRRect(
borderRadius:
BorderRadius.circular(defaultBorderRadiusCircular),
child: Image.asset(
'imagePath',
width: 90,
height: 90,
fit: BoxFit.cover,
),
),
),
const SizedBox(
width: 24,
),
Column(
children: [
const Text(
'Danau Beretan',
),
const Text(
'Indonesia',
),
],
),
],
),
Row(
children: [
Icon(Icons.star_half_outlined),
Text("4.5"),
],
)
],
),
),
),
I really love using Slivers, but really have a Problem with SliverAppBar:
usually, I use the SliverAppBar Widget for creating a AppBar that has a Background Image with the Parallax effect. So all I use is the flexible space, which unfortunately gets blocked by the AppBar Portion whenever you scroll down.
I tried making the AppBar portion transparent by setting the color value to transparent, but all it does is make the whole thing, including the flexiblespace, transparent..
Is there a way to use only the flexiblespace of a SliverAppBar without fading in the AppBar portion when scrolling down?
here is the code I use:
SliverAppBar(
expandedHeight: 220,
pinned: false,
forceElevated: true,
backgroundColor: Colors.transparent,
stretch: true,
leading: Container(),
flexibleSpace: FlexibleSpaceBar(
collapseMode: CollapseMode.pin,
background:Stack(
children: <Widget>[
Image(
fit: BoxFit.cover,
width: MediaQuery.of(context).size.width,
image: AssetImage('assets/images/image2.png'),
),
Positioned(
bottom: 0,
child: Container(
height: 110,
width: MediaQuery.of(context).size.width,
color: Colors.grey,
),
),
Positioned(
bottom: 10,
left: 10,
child: CircleAvatar(
radius: 45,
backgroundImage: AssetImage('assets/images/image.png'),
),
),
Positioned(
bottom: 77,
left: 110,
child: Container(
width: MediaQuery.of(context).size.width -110 -60,
child: Text(
'Name...',
overflow: TextOverflow.ellipsis,
maxLines: 1,
style: TextStyle(
fontSize: 20,
color: Colors.white
),
),
),
),
Positioned(
bottom: 63,
left: 110,
child: Container(
width: MediaQuery.of(context).size.width -110 -60,
child: Text(
'description...',
overflow: TextOverflow.ellipsis,
maxLines: 1,
style: TextStyle(
fontSize: 14,
color: Colors.white70
),
),
),
),
Positioned(
bottom: 5,
left: 110,
child: Container(
width: MediaQuery.of(context).size.width-110,
child: Row(
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
],
),
),
),
],
),
),
),
Hope these Images help explain my problem:
The flexiblespace looks as follows:Image 1
but once you scroll down, the flexible space fades away as seen in this picture:Image 2
I don't want to flexiblespace to fade away.
You've propably found the answer allready but I thought if someone like me encounter your question this might be a the answer you are looking for.
FlexibleSpaceBar include fade out animation and only way to exclude it is to write your own LayoutBuilder that will handle the collapse.
Here is a code example how you can create the custom flexibleSpace Widget with LayoutBuilder.
NestedScrollView(
headerSliverBuilder: (context, innerBoxIsScrolled) {
return [
SliverAppBar(
titleSpacing: 0,
pinned: false,
backgroundColor: Colors.transparent,
automaticallyImplyLeading: false,
elevation: 0.0,
actions: [
IconButton(
splashRadius: 20,
icon: Icon(
FontAwesomeIcons.cog,
color: Colors.grey[200],
),
onPressed: () {
},
),
],
toolbarHeight: kToolbarHeight,
expandedHeight: maxExtent,
flexibleSpace: LayoutBuilder(
builder: (context, constraints) {
double currentExtent = constraints.maxHeight;
final double deltaExtent = maxExtent - minExtent;
// 0.0 -> Expanded
// 1.0 -> Collapsed to toolbar
final double t =
(1.0 - (currentExtent - minExtent) / deltaExtent)
.clamp(0.0, 1.0) as double;
return Stack(
fit: StackFit.loose,
overflow: Overflow.clip,
children: [
Positioned(
top: _getCollapsePadding(t),
left: 0.0,
right: 0.0,
height: maxExtent,
child: Wrap(
crossAxisAlignment: WrapCrossAlignment.start,
children: [
//Insert Widgets add to your flexible space
],
),
),
],
);
},
),
),
];
},
body: Container()
),
double get maxExtent => 300;
double get minExtent => kToolbarHeight;
double _getCollapsePadding(double t) {
final double deltaExtent = maxExtent - minExtent;
return -Tween<double>(begin: 0.0, end: deltaExtent / 4).transform(t);
}
I need to put icon into CircleAvatar Widget to allow user upload his image.
Something like this:
This is my code:
child: CircleAvatar(
child: Stack(
children: <Widget>[
Positioned(
bottom: 0,
right: 0,
left: 0,
height: 33,
child: Container(
height: 20,
width: 30,
color: Color.fromRGBO(0, 0, 0, .74),
child: Center(
child:
Icon(Icons.photo_camera, color: Colors.grey),
),
),
)
],
),
radius: 68.0,
backgroundImage:
NetworkImage('https://via.placeholder.com/300'),
backgroundColor: Colors.transparent,
)
But I have this result:
Internal box with camera icon overflow from parent widget (CircleAvatar);
What you want can be simply done with - ClipOval
Your Code:
body: Center(
child: CircleAvatar(
child: ClipOval(
child: Stack(
children: <Widget>[
Image.network('https://via.placeholder.com/300'),
Positioned(
bottom: 0,
right: 0,
left: 0,
height: 33,
child: GestureDetector(
onTap: (){
print('upload Clicked');
},
child: Container(
height: 20,
width: 30,
color: Color.fromRGBO(0, 0, 0, .74),
child: Center(
child: Icon(Icons.photo_camera, color: Colors.grey),
),
),
),
),
],
),
),
radius: 68.0,
// backgroundImage: NetworkImage('https://via.placeholder.com/300'),
backgroundColor: Colors.transparent,
),
),
Output:
You can create your Custom Clipper to give the circular bottom to your widget.
You need to use the ClipPath widget for it, pass your widget in your case Container containing your camera icon.
and in clipper pass your CustomClipper.
ClipPath
return ClipPath(
child: your_widget,
clipper: BottomWaveClipper(),
);
CustomCliper
class BottomCircleClipper extends CustomClipper<Path> {
#override
Path getClip(Size size) {
//your path to draw circle
}
#override
bool shouldReclip(TriangleClipper oldClipper) => false;
}
Here are some links that will help you.
https://iirokrankka.com/2017/09/04/clipping-widgets-with-bezier-curves-in-flutter/
https://medium.com/flutter-community/clipping-in-flutter-e9eaa6b1721a