I faced with the problem that I have different AppBar icon paddings in my Flutter app.
I tried to solve it with package providing a responsive measuring (something like dp) instead of pixels, even though there is no padding in Pixel's (second phone) app bar icon I have to place text a lot more lower than it should be on Nexus phone
Here is my code:
class Home extends StatelessWidget {
const Home({Key? key}) : super(key: key);
final backgroundColor = 0xffF6F6F6;
final accentColor = 0xff8c84e2;
#override
Widget build(BuildContext context) {
return ScreenUtilInit(
designSize: Size(360, 690),
builder:() => MaterialApp(
// theme: ThemeData(fontFamily: 'Roboto'),
home: Scaffold(
body: CustomScrollView(
slivers: [
SliverAppBar(
backgroundColor: Color(backgroundColor),
expandedHeight: MediaQuery.of(context).size.height * 0.5,
leading: Builder(
builder: (context) => IconButton(
padding: EdgeInsets.zero,
tooltip: 'открыть меню',
icon: Icon(Icons.menu),
onPressed: () => Scaffold.of(context).openDrawer(),
),
),
flexibleSpace: FlexibleSpaceBar(
background: Stack(
children: <Widget>[
Container(
width: 500.w,
height: 500.h,
child: CustomPaint(
painter: CirclePainter(),
),
),
Padding(
padding: EdgeInsets.only(top: 100.h, left: 17.h),
child: Container(
child: Text('Подборки',
style: TextStyle(
color: Colors.white,
fontSize: 24,
fontFamily: 'Consolas')),
),
),
Positioned(
top: 110,
right: 10,
child: TextButton(
onPressed: () {},
child: Text(
'Открыть всё',
style: TextStyle(
color: Colors.white,
fontSize: 14,
fontFamily: 'Consolas'),
),
style: ButtonStyle(),
),
),
How can I make it identical on both phones?
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 am facing a problem with my custom app bar. I would like it to have a drawer but it doesn't work. I just don't know how to make it being able to open.
It is a custom app bar widget named Pasek (which stands for top bar in my language).
It has a logo picture which on click moves you to the first page of the app.
Next to it there is humburger menu with a drawer but I do not know why it doesn't work. I click on it and nothing happens.
Any ideas?
class Pasek extends StatelessWidget with PreferredSizeWidget {
#override
Size get preferredSize => Size.fromHeight(50.0);
const Pasek({
Key? key,
}) : super(key: key);
#override
Widget build(BuildContext context) {
return AppBar(
actions: <Widget>[
Padding(
padding: EdgeInsets.only(right: 35.0),
child: ElevatedButton(
child: Icon(Icons.menu, color: Colors.white),
onPressed: () {
Scaffold(
endDrawer: Drawer(
child: ListView(
padding: EdgeInsets.zero,
children: const <Widget>[
DrawerHeader(
decoration: BoxDecoration(
color: Colors.black,
),
child: Text(
'Menu',
style: TextStyle(
color: Colors.pink,
fontSize: 24,
),
),
),
ListTile(
leading: Icon(Icons.message),
title: Text('Messages'),
),
ListTile(
leading: Icon(Icons.account_circle),
title: Text('Profile'),
),
ListTile(
leading: Icon(Icons.settings),
title: Text('Settings'),
),
],
),
),
);
},
)),
],
backgroundColor: Colors.black,
title: GestureDetector(
onTap: () {
Navigator.of(context).push(
MaterialPageRoute(
builder: (_) => FirstPage(),
),
);
}, // Image tapped
child: Image.asset(
'images/logo.png',
fit: BoxFit.scaleDown,
height: 30,
width: 200,
),
));
}
}
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,
),
)
),
),
)
],
),
)
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 have noticed creating forms with flutter. That if there is Scaffold with a text field focused i.e the key pad visible if one presses the back button.
Navigator.pop();
This results in an render flex error.
I have tried wrapping the child in the single child scroll view components also tried setting the resize to avoid bottom padding property to true.
I still get the error.
Has anyone else experienced this ?
if so what is the solution and cause of the error ?
EDIT:
import 'package:flutter/material.dart';
class SettingsScreen extends StatelessWidget {
#override
Widget build(BuildContext context) {
return Scaffold(
resizeToAvoidBottomPadding: false,
appBar: AppBar(
title: Text(
"Settings",
style: TextStyle(
color: primaryColor,
fontFamily: titleFontStyle
),
),
leading: IconButton(
icon: Icon(Icons.arrow_back, color: primaryColor),
onPressed: () {
Navigator.of(context).pop();
},
),
centerTitle: true,
backgroundColor: Colors.white,
elevation: 0.0,
),
backgroundColor: Colors.white,
body: Container(
// width: MediaQuery.of(context).size.width - 10.0,
// height: MediaQuery.of(context).size.height,
// padding: EdgeInsets.fromLTRB(20.0, 60.0, 20.0, 0.0),
child: SettingsForm(),
),
);
}
}
class SettingsForm extends StatefulWidget {
#override
_SettingsFormState createState() => _SettingsFormState();
}
class _SettingsFormState extends State<SettingsForm> {
final _formKey = GlobalKey<FormState>();
#override
Widget build(BuildContext context) {
return Form(
key: _formKey,
child: Padding(
padding: const EdgeInsets.only(top: 50.0),
child: ListView(
shrinkWrap: true,
padding: EdgeInsets.only(left: 24.0, right: 24.0),
children: <Widget>[
TextField(
autofocus: true,
decoration: InputDecoration(
border: OutlineInputBorder(),
labelText: 'Username',
),
),
SizedBox(height: 8.0),
RaisedButton(
padding: EdgeInsets.symmetric(vertical: 20.0, horizontal: 40.0),
textColor: Colors.white,
color: primaryColor,
child: Text(
'Update',
style: TextStyle(
color: Colors.white
),
),
onPressed: () {},
),
],
),
),
);
}
}
I have tried that, and it works fine. The keyboard layout will close when you press back button and navigate you to previous page.
Here is my 2 dart files below:
main.dart (From which I navigating through)
import 'settings.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: new HomeScreen()
);
}
}
class HomeScreen extends StatelessWidget {
#override
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text("Title"),
),
body: new Center(child: new Text("Click Mee")),
floatingActionButton: new FloatingActionButton(
child: new Icon(Icons.add),
backgroundColor: Colors.orange,
onPressed: () {
print("Clicked");
Navigator.push(
context,
new MaterialPageRoute(builder: (context) => new SettingsForm()),
);
},
),
);
}
}
settings.dart (your provided code on next screen)
class SettingsForm extends StatefulWidget {
SettingsForm();
#override
_SettingsFormState createState() => _SettingsFormState();
}
class _SettingsFormState extends State<SettingsForm> {
final _formKey = GlobalKey<FormState>();
Color primaryColor = const Color.fromRGBO(3, 155, 226, 1);
#override
void initState() {
super.initState();
}
#override
Widget build(BuildContext context) {
return new Scaffold(
resizeToAvoidBottomPadding: false,
appBar: AppBar(
title: Text(
"Settings",
style: TextStyle(
color: primaryColor
),
),
leading: IconButton(
icon: Icon(Icons.arrow_back, color: primaryColor),
onPressed: () {
FocusScope.of(context).unfocus();
Navigator.of(context).pop();
print("yes");
},
),
centerTitle: true,
backgroundColor: Colors.white,
elevation: 0.0,
),
backgroundColor: Colors.white,
body: Container(
// width: MediaQuery.of(context).size.width - 10.0,
// height: MediaQuery.of(context).size.height,
// padding: EdgeInsets.fromLTRB(20.0, 60.0, 20.0, 0.0),
child: Form(
key: _formKey,
child: Padding(
padding: const EdgeInsets.only(top: 50.0),
child: ListView(
shrinkWrap: true,
padding: EdgeInsets.only(left: 24.0, right: 24.0),
children: <Widget>[
TextField(
autofocus: true,
decoration: InputDecoration(
border: OutlineInputBorder(),
labelText: 'Username',
),
),
SizedBox(height: 8.0),
RaisedButton(
padding: EdgeInsets.symmetric(vertical: 20.0, horizontal: 40.0),
textColor: Colors.white,
color: primaryColor,
child: Text(
'Update',
style: TextStyle(
color: Colors.white
),
),
onPressed: () {},
),
],
),
),
),
),
);
}
}
The issue was that when I navigate back to the previous component. It was the previous component that overflowed.
I had used Column in the said component.
Converting it into ListView solved the error.