import 'package:flutter_svg/flutter_svg.dart';
void main() {
runApp(MaterialApp(
home: Scaffold(
// adding App Bar
appBar: AppBar(
actions: [
SvgPicture.asset(
"assets/images/Moto.svg",
width: 50,
height: 100,
),
IconButton(
onPressed: () {},
icon: const Icon(Icons.cancel_outlined),
alignment: Alignment.topRight,
)
],
backgroundColor: Colors.white,
title: const Text(
"Version:1.38-alpha(10308)",
style: TextStyle(
color: Colors.white,
),
),
),
body: const MyApp(),
),
));
}
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
#override
Widget build(BuildContext context) {
return Center(
child: Container(
child: const Expanded(
// SingleChildScrollView contains a
// single child which is scrollable
child: SingleChildScrollView(
// for Vertical scrolling
scrollDirection: Axis.vertical,
child: Text(`
This is simple wrap your Expanded widget with stack and add the image widget as a first child to the stack.
Scaffold(
appBar: AppBar(
title: const Text('Sample UI'),
),
body: Stack(
children: [
SizedBox.expand(
child: Image.network(
'https://images.pexels.com/photos/1624496/pexels-photo-1624496.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=1',
fit: BoxFit.cover,
),
),
SingleChildScrollView(
child: Column(
children: List.generate(100,(index) =>
Text(
'Hello welcome $index',
style: const TextStyle(
fontSize: 20,
color: Colors.amberAccent,
fontWeight: FontWeight.bold,
),
)
),
),
)
],
),
)
Related
I am trying to create an app bar that looks like the following image when expanded
When collapsing I only need the initial column of text to be available in the app bar, so the image should fade away and the text column to animate and become the Appbar title
I have tried using SliverAppBar with a custom scroll view but the Flexible space's title is not looking good also I don't know how to make the image disappear alone and show only the text when collapsed.
As of now, this is the expanded state
And when I try to collapse it, this happens
Here's the code for the same
CustomScrollView(
slivers: [
SliverAppBar(
pinned: true,
leading: GestureDetector(
onTap: () => Get.back(),
child: const Icon(
Icons.arrow_back,
color: Colors.black,
),
),
flexibleSpace: FlexibleSpaceBar(
title: Padding(
padding: const EdgeInsets.symmetric(horizontal: 16.0),
child: Row(
children: [
const Expanded(
child: Text.rich(
TextSpan(
text: "Buffet Deal\n",
style:
TextStyle(color: Colors.black, fontSize: 14),
children: [
TextSpan(
text: "Flash Deal",
style: TextStyle(
color: Colors.black, fontSize: 10),
),
]),
),
),
if (_model.imgUrl != null)
CachedNetworkImage(
imageUrl: _model.imgUrl!,
),
const SizedBox(
width: 18,
)
],
),
),
),
expandedHeight: Get.height * 0.2,
backgroundColor: const Color(0xFFFFF4F4)),
SliverToBoxAdapter(
child: Container()
)
],
),
Your help is appreciated. Thanks in advance
To make the SliverAppBar's flexible space image disappear whenever the expanded space collapse just use the FlexibleSpaceBar.background property.
To solve the overlapping text just wrap the FlexibleSpaceBar around a LayoutBuilder to get if it's expanded or not and adjust the text positioning.
Check out the result below (Also, the live demo on DartPad):
import 'dart:math';
import 'package:flutter/material.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
#override
Widget build(BuildContext context) {
return const MaterialApp(
title: 'Flutter Demo',
home: MyHomePage(),
debugShowCheckedModeBanner: false,
);
}
}
class MyHomePage extends StatelessWidget {
const MyHomePage({Key? key}) : super(key: key);
#override
Widget build(BuildContext context) {
final expandedHeight = MediaQuery.of(context).size.height * 0.2;
return Scaffold(
body: CustomScrollView(
slivers: [
SliverAppBar(
pinned: true,
leading: GestureDetector(
onTap: () => {},
child: const Icon(
Icons.arrow_back,
color: Colors.black,
),
),
flexibleSpace: LayoutBuilder(builder: (context, constraints) {
final fraction =
max(0, constraints.biggest.height - kToolbarHeight) /
(expandedHeight - kToolbarHeight);
return FlexibleSpaceBar(
title: Padding(
padding: const EdgeInsets.symmetric(horizontal: 16.0),
child: Row(
children: [
Expanded(
child: Padding(
padding: EdgeInsets.only(left: 24 * (1 - fraction)),
child: const Text.rich(
TextSpan(
text: "Buffet Deal\n",
style: TextStyle(
color: Colors.black, fontSize: 14),
children: [
TextSpan(
text: "Flash Deal",
style: TextStyle(
color: Colors.black, fontSize: 10),
),
]),
),
),
),
const SizedBox(width: 18)
],
),
),
background: Align(
alignment: Alignment.centerRight,
child: Image.network(
"https://source.unsplash.com/random/400x225?sig=1&licors",
),
),
);
}),
expandedHeight: MediaQuery.of(context).size.height * 0.2,
backgroundColor: const Color(0xFFFFF4F4),
),
const SliverToBoxAdapter(child: SizedBox(height: 1000))
],
),
);
}
}
i want to implement the sliver app bar as shown in the the 2 pictures given below. After much googling , I fount about the CustomScrollView widget and the SliverAppBar widget but all the tutorials and blogs online about sliver app bars show a simple one where an image disappears into an app bar with a text as title on scrolling. However here what I want to achieve is slightly different and I am having a hard time trying to figure out how to do it. Can anyone help me with it?
You can try this:
import 'package:flutter/material.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatefulWidget {
const MyApp({Key? key}) : super(key: key);
#override
State<MyApp> createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
ScrollController? _scrollController;
bool lastStatus = true;
double height = 200;
void _scrollListener() {
if (_isShrink != lastStatus) {
setState(() {
lastStatus = _isShrink;
});
}
}
bool get _isShrink {
return _scrollController != null &&
_scrollController!.hasClients &&
_scrollController!.offset > (height - kToolbarHeight);
}
#override
void initState() {
super.initState();
_scrollController = ScrollController()..addListener(_scrollListener);
}
#override
void dispose() {
_scrollController?.removeListener(_scrollListener);
_scrollController?.dispose();
super.dispose();
}
#override
Widget build(BuildContext context) {
final TextTheme textTheme = Theme.of(context).textTheme;
return MaterialApp(
debugShowCheckedModeBanner: false,
theme: ThemeData.dark(),
title: 'Horizons Weather',
home: Scaffold(
body: NestedScrollView(
controller: _scrollController,
headerSliverBuilder: (context, innerBoxIsScrolled) {
return [
SliverAppBar(
elevation: 0,
backgroundColor: Colors.blueGrey,
pinned: true,
expandedHeight: 275,
flexibleSpace: FlexibleSpaceBar(
collapseMode: CollapseMode.parallax,
title: _isShrink
? const Text(
"Profile",
)
: null,
background: SafeArea(
child: Column(
children: [
Padding(
padding: const EdgeInsets.only(top: 48),
child: ClipRRect(
borderRadius: BorderRadius.circular(100),
child: Image.network(
headerImage,
fit: BoxFit.cover,
height: 100,
width: 100,
),
),
),
const SizedBox(
height: 16,
),
Text(
"Flipkart",
style: textTheme.headline4,
),
const SizedBox(
height: 8,
),
const Text(
"flipkart.com",
),
const SizedBox(
height: 5,
),
const Text(
"Info about the company",
),
],
),
),
),
actions: _isShrink
? [
Padding(
padding: const EdgeInsets.only(left: 8, right: 12),
child: Row(
children: [
Padding(
padding:
const EdgeInsets.only(left: 8, right: 8),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: const [
Text(
"Flipkart",
style: TextStyle(
fontSize: 16,
fontWeight: FontWeight.bold,
),
),
Text(
"flipkart.com",
style: TextStyle(
fontSize: 12,
),
),
],
),
),
ClipRRect(
borderRadius: BorderRadius.circular(100),
child: Image.network(
headerImage,
fit: BoxFit.cover,
height: 30,
width: 30,
),
),
],
),
),
]
: null,
),
];
},
body: CustomScrollView(
scrollBehavior: const ConstantScrollBehavior(),
slivers: [
SliverList(
delegate: SliverChildBuilderDelegate(
(BuildContext context, int index) {
return Padding(
padding: const EdgeInsets.all(8.0),
child: Center(child: Text("Item: $index")),
);
},
childCount: 50,
),
),
],
),
),
drawer: Drawer(
child: ListView(
padding: EdgeInsets.zero,
children: <Widget>[
const UserAccountsDrawerHeader(
accountName: Text("Zakaria Hossain"),
accountEmail: Text("zakariaaltime#gmail.com"),
currentAccountPicture: CircleAvatar(
backgroundColor: Colors.orange,
child: Text(
"A",
style: TextStyle(fontSize: 40.0),
),
),
),
ListTile(
leading: Icon(Icons.home),
title: Text("Home"),
onTap: () {
Navigator.pop(context);
},
),
ListTile(
leading: Icon(Icons.settings),
title: Text("Settings"),
onTap: () {
Navigator.pop(context);
},
),
ListTile(
leading: Icon(Icons.contacts),
title: Text("Contact Us"),
onTap: () {
Navigator.pop(context);
},
),
],
),
),
),
);
}
}
Demo
return strong textScaffold(
appbar: AppBar(
leading: InkWell(
child: SvgPicture.asset(
'assets/arrow.svg',
),
onTap: () {
Navigator.pop(context);
},
));
Try the code below.
import 'package:flutter/material.dart';
class AppBarOnly extends StatelessWidget {
const AppBarOnly({Key? key}) : super(key: key);
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
backgroundColor: Colors.blue[800],
title: Padding(
padding: EdgeInsets.only(top: 80.0),
child: CircleAvatar(
backgroundColor: Colors.white,
// backgroundImage: AssetImage(''),
radius: 60,
child: Padding(
padding: EdgeInsets.only(bottom: 50.0),
child: Text(
'Logo Here',
style: TextStyle(
color: Colors.black,
fontWeight: FontWeight.bold,
fontSize: 18.0),
),
),
),
),
),
);
}
}
NB: Change the background color of the app bar to meet your need
class MyHomePage extends StatelessWidget {
final double topWidgetHeight = 200.0;
final double avatarRadius = 50.0;
#override
Widget build(BuildContext context) {
return new Scaffold(
body: new Stack(
children: <Widget>[
new Column(
children: <Widget>[
new Container(
height: topWidgetHeight,
color: Colors.yellow,
),
new Container(
color: Colors.red,
)
],
),
new Positioned(
child: new CircleAvatar(
radius: avatarRadius,
backgroundColor: Colors.green,
),
left: (MediaQuery.of(context).size.width/2) - avatarRadius,
top: topWidgetHeight - avatarRadius,
)
],
),
);
}
}
I have Dashboard screen in lib directory. The register_customer.dart file is under customers subdirectory in lib folder. I have imported register_customer.dart in dashboard screen. However the RegisterCustomer class in register_customer.dart is not resolving. Here is my code:
lib/dashboard.dart
import 'package:flutter/material.dart';
import './customers/register_customer.dart';
class MyDashboard extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
backgroundColor: defaultBackgroundColor,
elevation: 0,
leading: IconButton(
icon: Icon(
Icons.arrow_back,
color: btnTextColor,
),
onPressed: () {
//navigate to the previous page
Navigator.pop(context);
},
),
//navabar title text text
title: Text('Dashboard'),
),
body: Center(
child: Column(
children: <Widget>[
Container(
margin: const EdgeInsets.all(20.0),
//color: Colors.amber[600],
width: 200.0,
height: 250.0,
child: ListView(
children: <Widget>[
GestureDetector(
child: ListTile(
title: Text(
'Register Customer',
style:
TextStyle(fontSize: 20, color: Color(0xffE06C19)),
),
leading: Icon(
Icons.user,
color: Colors.amber,
),
),
onTap: () {
**//this is where the error is being raised**
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => RegisterCustomer()));
},
),
],
),
),
],
))),
);
}
}
lib/customers/register_customer.dart
import 'package:flutter/material.dart';
class RegisterCustomer extends StatefulWidget {
#override
_RegisterCustomerState createState() => _RegisterCustomerState();
}
String _first_name;
String _last_name;
class _RegisterCustomerState extends State<RegisterCustomer> {
final GlobalKey<FormState> _formkey = GlobalKey<FormState>();
#override
Widget build(BuildContext context) {
return MaterialApp(
theme: ThemeData(
primaryColor: Colors.purple[800],
accentColor: Colors.amber,
accentColorBrightness: Brightness.dark),
home: Scaffold(
appBar: AppBar(
title: Text(
'Register Customer',
style: TextStyle(fontSize: 20),
textAlign: TextAlign.center,
),
),
body: Container(
margin: EdgeInsets.all(12),
child: Form(
key: _formkey,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
SizedBox(
height: 50,
),
RaisedButton(
color: Color(0xff980CF0),
textColor: Colors.white,
splashColor: Colors.grey,
padding: EdgeInsets.fromLTRB(10, 10, 10, 10),
child: Text(
'Register',
style: TextStyle(
color: Colors.orangeAccent,
fontSize: 17,
),
),
onPressed: () {
if (!_formkey.currentState.validate()) {
return;
}
//submit data to the server
},
)
],
),
),
),
),
);
}
}
I am experiencing same issue with other routes. What am I doing wrong?
I think the import path is incorrect:
import 'package:projectname/customer/register_customer.dart
if the file is in lib/customer/register_customer.dart
I am using two widgets(Text and Flatbutton) in Row. Whatever I do, there is space between them. I don't want any space between them how to do that?
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text("TextColor checking"),
),
body:
Row(mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text("Already have a account?"),
FlatButton(
onPressed: () {},
child: Text("Login"),
textColor: Colors.indigo,
),
],
),
),
);
}
}
I want like this: Already have a account? Login
If you want to create a simple text like that, dont use row or flat button. Use Rich text instead.
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text("TextColor checking"),
),
body: Padding(
padding: const EdgeInsets.all(8.0),
child: RichText(
text: TextSpan(
style: TextStyle(fontSize: 16, color: Colors.white),
children: <TextSpan>[
TextSpan(
text: "Don't have an account? ",
),
TextSpan(
text: "Login",
style: TextStyle(
//Add any decorations here
color: Colors.indigo,
decoration: TextDecoration.underline,
),
recognizer: TapGestureRecognizer()
..onTap = () {
//Enter the function here
},
),
],
),
),
),
),
);
}
}
You're getting the space because you are using a FlatButton and FlatButtons has padding by default. You should use a GestureDetector instead.
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text("TextColor checking"),
),
body: Padding(
padding: const EdgeInsets.all(8.0),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text("Already have a account? "),
GestureDetector(
onTap: () {},
child: Text(
"Login",
style: TextStyle(
color: Colors.indigo,
),
),
),
],
),
),
),
);
}
}
I tried your code and in seams the space is not between the components, but its is the padding of the FlatButton. to remove that, you will have use another component instead of Flat Button. try the below
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text("TextColor checking"),
),
body: Padding(
padding: const EdgeInsets.all(8.0),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text("Already have a account?"),
RawMaterialButton(
constraints: BoxConstraints(),
padding: EdgeInsets.all(
5.0), // optional, in order to add additional space around text if needed
child: Text('Login'),
onPressed: () {})
// FlatButton(
// onPressed: () {},
// child: Text("Login"),
// textColor: Colors.indigo,
// ),
],
),
),
),
);
}
}