Related
Hello guys i have two stateful widget InactiveCustomersListView and MessageCustomerHeader
InactiveCustomersListView has a List of tiles, and these tiles have checkboxes
class InactiveCustomersListView extends StatefulWidget {
final bool checkAll;
const InactiveCustomersListView({
Key key,
this.checkAll,
}) : super(key: key);
#override
State<InactiveCustomersListView> createState() =>
_InactiveCustomersListViewState();
}
class _InactiveCustomersListViewState extends State<InactiveCustomersListView> {
bool checkAll;
List<CheckBoxModel> listOfCustomers = [];
#override
void initState() {
listOfCustomers.addAll({
CheckBoxModel(selected: false),
});
super.initState();
}
#override
Widget build(BuildContext context) {
final controller = Get.put(CustomersController());
return ListView.builder(
scrollDirection: Axis.vertical,
shrinkWrap: true,
itemCount: listOfCustomers.length,
itemBuilder: (context, index) {
return Obx(() {
return Container(
color: Color(0xffFFFFFF),
child: ListTile(
contentPadding: controller.isCheboxVisible.isTrue
? EdgeInsets.only(left: 0, right: 22, top: 10, bottom: 10)
: EdgeInsets.only(left: 22, right: 22, top: 10, bottom: 10),
horizontalTitleGap: 5,
leading: controller.isCheboxVisible.isTrue
? Visibility(
visible: controller.isCheboxVisible.value,
child: Transform.scale(
scale: 1.3,
child: Checkbox(
side: MaterialStateBorderSide.resolveWith(
(Set<MaterialState> states) {
if (states.contains(MaterialState.selected)) {
return const BorderSide(
width: 2, color: Color(0xff34495E));
}
return const BorderSide(
width: 1, color: Color(0xffB0BEC1));
},
),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(5)),
activeColor: Color(0xff34495E),
//materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
//visualDensity: VisualDensity(horizontal: -4, vertical: -4),
value: listOfCustomers[index].selected,
onChanged: (value) {
setState(() {
listOfCustomers[index].selected = value;
final check = listOfCustomers
.every((element) => element.selected);
checkAll = check;
});
},
),
),
)
: null,
title: Row(
children: [
SizedBox(
width: 60,
height: 60,
child: ClipRRect(
borderRadius: BorderRadius.all(Radius.circular(80)),
child: CachedNetworkImage(
height: 100,
width: double.infinity,
fit: BoxFit.cover,
imageUrl:
Get.find<AuthService>().user.value.avatar.thumb,
placeholder: (context, url) => Image.asset(
'assets/img/loading.gif',
fit: BoxFit.cover,
width: double.infinity,
height: 80,
),
errorWidget: (context, url, error) =>
Icon(Icons.error_outline),
),
),
),
SizedBox(
width: 10,
),
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Text(
'John Cletus',
style: GoogleFonts.poppins(
fontSize: 14,
fontWeight: FontWeight.w500,
color: Color(0xff151515)),
),
Container(
decoration: BoxDecoration(
color: Color(0xffECF0F1),
borderRadius: BorderRadius.circular(20),
),
child: Padding(
padding: const EdgeInsets.only(
left: 10.0,
right: 10.0,
top: 5.0,
bottom: 5.0),
child: Text(
'Inactive',
style: GoogleFonts.poppins(
fontSize: 10,
fontWeight: FontWeight.w400,
color: Color(0xff7F8D90)),
),
),
),
],
),
SizedBox(
height: 10,
),
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Row(
children: [
Text(
'2',
style: GoogleFonts.poppins(
fontSize: 14,
fontWeight: FontWeight.w500,
color: Color(0xff151515)),
),
SizedBox(
width: 5,
),
Text(
'jobs',
style: GoogleFonts.poppins(
fontSize: 12,
fontWeight: FontWeight.w400,
color: Color(0xff151515)),
),
],
),
Text(
'Last job 5 days ago',
style: GoogleFonts.poppins(
fontSize: 9,
fontStyle: FontStyle.italic,
fontWeight: FontWeight.w400,
color: Color(0xff151515)),
),
],
),
],
),
),
],
),
),
);
});
});
}
}
class CheckBoxModel {
bool selected;
CheckBoxModel({this.selected});
}
MessageCustomerHeader widget class has a checkbox that controls the Check boxes in the InactiveCustomersListView widget class:
class MessageCustomerHeader extends StatefulWidget {
final List<CheckBoxModel> listOfCustomers;
const MessageCustomerHeader({
Key key,
this.listOfCustomers,
}) : super(key: key);
#override
State<MessageCustomerHeader> createState() => _MessageCustomerHeaderState();
}
class _MessageCustomerHeaderState extends State<MessageCustomerHeader> {
bool checkAll = false;
#override
Widget build(BuildContext context) {
return Container(
color: Colors.white,
child: Padding(
padding: const EdgeInsets.all(20.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'Select customers you woult like to message',
style: GoogleFonts.poppins(
color: Color(0xff596780).withOpacity(0.8),
fontSize: 14,
fontWeight: FontWeight.w500),
),
SizedBox(
height: 10,
),
Row(
mainAxisAlignment: MainAxisAlignment.start,
children: [
Transform.scale(
scale: 1.3,
child: Checkbox(
side: MaterialStateBorderSide.resolveWith(
(Set<MaterialState> states) {
if (states.contains(MaterialState.selected)) {
return const BorderSide(
width: 2, color: Color(0xff34495E));
}
return const BorderSide(
width: 1, color: Color(0xffB0BEC1));
},
),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(5)),
activeColor: Color(0xff34495E),
materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
visualDensity: VisualDensity(horizontal: -4, vertical: -4),
value: checkAll,
onChanged: (value) {
setState(() {
checkAll = value;
widget.listOfCustomers.forEach((element) {
element.selected = value;
});
});
},
),
),
SizedBox(
width: 10,
),
Text(
'Select all',
style: GoogleFonts.poppins(
color: Colors.black87,
fontSize: 12,
fontWeight: FontWeight.w400),
),
],
),
],
),
),
);
}
}
I tried using constructor to pass "listOfCustomers" from InactiveCustomersListView widget to MessageCustomerHeader widget
And also passing "checkAll" from MessageCustomerHeader to InactiveCustomersListView widget by also using constructors.
The problem is having is that when i click on the checkbox in MessageCustomerHeader widget to check all the check boxes in InactiveCustomersListView widget, the state don't seem to change and it doesn't even after setting all the logic. What am i doing wrong guys and how do i resolve this issue :(
This is the error i get when i tap the checkbox on the MessageCustomerHeader checkbox.
"The method 'forEach' was called on null.
Receiver: null
Tried calling: forEach(Closure: (CheckBoxModel) => Null)"
Thank you.
If you have the proper lints enabled you would have seen this warning: DON'T put any logic in createState().
From the associated description:
Implementations of createState() should return a new instance of a State object and do nothing more. Since state access is preferred via the widget field, passing data to State objects using custom constructor parameters should also be avoided and so further, the State constructor is required to be passed no arguments.
(emphasis added)
You are passing arguments to your State constructors. Instead, use widget.checkAll and widget.listOfCustomers to access widget properties from the state objects.
Also:
It would be better to specify a type for checkAll. In your code you just have final checkAll;.
It is difficult to read the screen shot of the error message. It would be better to include the error message as text in the question, along with an indication in your code of the line to which the error message is referring.
So, I used the IntroSlider package and I have successfully executed it. However, I don't want to use just a simple background color. I wanted to create a background with components on it that I have already created in a separate dart file. How will I e able to combine them? The following are the codes that I have created:
intro_slider.dart
import 'package:ehatid_driver_app/Screens/Welcome/components/background.dart';
import 'package:flutter/material.dart';
import 'package:intro_slider/dot_animation_enum.dart';
import 'package:intro_slider/intro_slider.dart';
import 'package:intro_slider/slide_object.dart';
import 'signup.dart';
class IntroSliderPage extends StatefulWidget {
#override
_IntroSliderPageState createState() => _IntroSliderPageState();
}
class _IntroSliderPageState extends State<IntroSliderPage> {
List<Slide> slides = [];
#override
void initState() {
// TODO: implement initState
super.initState();
slides.add(
new Slide(
title: "More Passengers",
description:
"No need to worry about getting passengers, \n as they will be able to connect directly to you",
pathImage: "assets/images/illus8.png",
),
);
slides.add(
new Slide(
title: "Convenient",
description: "Efficient way of acquiring new \n passengers for all stray tricycle drivers",
pathImage: "assets/images/illus2.png",
),
);
slides.add(
new Slide(
title: "Earn More",
description: "Higher revenue pay for maximizing \n every trip journey",
pathImage: "assets/images/illus11.png",
),
);
slides.add(
new Slide(
title: "Accept a Job",
description: "Register in TODA G5 Terminal and \n experience your first trip.",
pathImage: "assets/images/ehatid logo.png",
),
);
}
List<Widget> renderListCustomTabs() {
List<Widget> tabs = [];
for (int i = 0; i < slides.length; i++) {
Slide currentSlide = slides[i];
tabs.add(
Container(
width: double.infinity,
height: double.infinity,
child: Container(
margin: EdgeInsets.only(bottom: 10, top: 20),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Container(
child: Image.asset(
currentSlide.pathImage.toString(),
matchTextDirection: true,
height: 250,
),
),
Container(
margin: EdgeInsets.only(top: 5),
child: Text(
currentSlide.title.toString(),
style: TextStyle(fontFamily: 'Montserrat', fontSize: 32, letterSpacing: -2, fontWeight: FontWeight.bold),
),
),
Container(
padding: EdgeInsets.symmetric(
horizontal: 3,
),
child: Text(
currentSlide.description.toString(),
style: TextStyle(
fontFamily: 'Montserrat', fontSize: 15, color: Color(0xff646262), letterSpacing: -0.5, fontWeight: FontWeight.w500
),
maxLines: 3,
textAlign: TextAlign.center,
overflow: TextOverflow.ellipsis,
),
margin: EdgeInsets.only(
top: 15,
left: 20,
right: 20,
),
),
],
),
),
),
);
}
return tabs;
}
#override
Widget build(BuildContext context) {
return IntroSlider(
backgroundColorAllSlides: Colors.yellow,
renderSkipBtn: Text(
"Skip",
style: TextStyle(fontFamily: 'Montserrat', fontSize: 20, color: Color(0xff8C8C8C)),
),
renderNextBtn: Text(
"Next",
style: TextStyle(fontFamily: 'Montserrat', fontSize: 20, color: Colors.white),
),
renderDoneBtn: Text(
"Done",
style: TextStyle(fontFamily: 'Montserrat', fontSize: 20, color: Colors.white),
),
colorDot: Colors.white,
sizeDot: 10.0,
typeDotAnimation: dotSliderAnimation.SIZE_TRANSITION,
listCustomTabs: this.renderListCustomTabs(),
scrollPhysics: BouncingScrollPhysics(),
onDonePress: () => Navigator.pushReplacement(
context,
MaterialPageRoute(
builder: (_) => HomePage(),
),
),
);
}
}
background.dart
import 'package:flutter/material.dart';
class Background extends StatelessWidget {
final Widget child;
const Background({
Key? key,
required this.child,
}) : super(key: key);
#override
Widget build(BuildContext context) {
Size size = MediaQuery.of(context).size;
return Container(
height: size.height,
width: double.infinity,
child: Stack(
alignment: Alignment.center,
children: <Widget>[
Positioned(
top: 0,
child: Image.asset("assets/images/Vector 1.png",
width: size.width,
),
),
child,
],
),
);
}
}
This is the UI im achieving for: The background is in background.dart, while all elements such as text, buttons and textfields are in intro_slider.dart.
UI:
Vector Image
Vector Image for BG
Try to remove IntroSlider's backgroundColorAllSlides, and set it in background.dart like this:
Container(
height: size.height,
width: double.infinity,
color: Colors.yellow,// <--- add here
child: Stack(
alignment: Alignment.center,
children: <Widget>[
Positioned(
top: 0,
child: Image.asset(
"assets/images/JTrrN.png",
width: size.width,
),
),
child,
],
),
)
And then use it like this:
Background(
child: IntroSlider(
renderSkipBtn: Text(
"Skip",
style: TextStyle(fontFamily: 'Montserrat', fontSize: 20, color: Color(0xff8C8C8C)),
),
renderNextBtn: Text(
"Next",
style: TextStyle(fontFamily: 'Montserrat', fontSize: 20, color: Colors.white),
),
renderDoneBtn: Text(
"Done",
style: TextStyle(fontFamily: 'Montserrat', fontSize: 20, color: Colors.white),
),
colorDot: Colors.white,
sizeDot: 10.0,
typeDotAnimation: dotSliderAnimation.SIZE_TRANSITION,
listCustomTabs: this.renderListCustomTabs(),
scrollPhysics: BouncingScrollPhysics(),
onDonePress: () => Navigator.pushReplacement(
context,
MaterialPageRoute(
builder: (_) => HomePage(),
),
),
),
)
Hello there I'm new to flutter and I want to achieve this certain UI. from the UI I can see -
At the top it has a custom search bar I don't know if it's an appbar or not.
It has a SizedBox or something similar below the searchbar.
It has A listview.builder (I already Know how to achieve this)
So I would like to ask how to achieve the first two contents of the app
here is a screenshot of the app
You can take this as an example. a similar design.
import 'package:flutter/material.dart';
class FirstScreen extends StatefulWidget {
const FirstScreen({Key? key}) : super(key: key);
#override
State<FirstScreen> createState() => _FirstScreenState();
}
class _FirstScreenState extends State<FirstScreen> {
#override
Widget build(BuildContext context) {
return SingleChildScrollView(
child: Container(
width: MediaQuery.of(context).size.width,
height: MediaQuery.of(context).size.height,
child: Column(
children: [
const SizedBox(
height: 30,
),
buildTitleText(context),
const SizedBox(
height: 30,
),
buildSearchBar(context),
const SizedBox(
height: 30,
),
buildSecondTitle(context),
const SizedBox(
height: 10,
),
buildContent(context)
],
),
),
);
}
SizedBox buildSecondTitle(BuildContext context) {
return SizedBox(
width: MediaQuery.of(context).size.width - 65,
child: Row(
children: const [
Text(
'Favorite Places',
style: TextStyle(
fontSize: 18,
fontWeight: FontWeight.bold,
),
),
TextButton(
onPressed: null,
child: Text(
'See All',
style: TextStyle(color: Colors.blue, fontSize: 18),
)),
],
),
);
}
Container buildTitleText(BuildContext context) {
return Container(
width: MediaQuery.of(context).size.width - 50,
child: const Text(
"What you would like to find?",
style: TextStyle(
fontWeight: FontWeight.w600,
fontSize: 30,
),
),
);
}
SingleChildScrollView buildContent(BuildContext context) {
return SingleChildScrollView(
scrollDirection: Axis.horizontal,
child: Row(
children: [
const SizedBox(
width: 25,
),
buildCityCard(context,
photoName: 'img_istanbul.jpg',
cityName: 'İstanbul',
cityActivity: '98 Aktivite',
cityScore: '4.8'),
const SizedBox(
width: 25,
),
buildCityCard(context,
photoName: 'img_mugla.jpg',
cityName: 'Muğla',
cityActivity: '102 Aktivite',
cityScore: '4.7'),
const SizedBox(
width: 25,
),
buildCityCard(context,
photoName: 'img_antalya.jpg',
cityName: 'Antalya',
cityActivity: '98 Aktivite',
cityScore: '4.5'),
const SizedBox(
width: 25,
),
],
),
);
}
Container buildSearchBar(BuildContext context) {
return Container(
width: MediaQuery.of(context).size.width - 65,
child: TextField(
decoration: InputDecoration(
prefixIcon: const Icon(
Icons.search,
),
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(360),
borderSide: const BorderSide(
color: Colors.blueAccent,
width: 2,
)),
labelText: "Locaiton",
),
),
);
}
Container buildCityCard(BuildContext context,
{required String photoName,
required String cityName,
required String cityActivity,
required String cityScore}) {
return Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(30),
color: Colors.white,
),
height: MediaQuery.of(context).size.height / 2.5,
width: MediaQuery.of(context).size.height / 3.7,
child: Column(
children: [
Expanded(
flex: 5,
child: Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(30),
color: Colors.blue,
image: DecorationImage(
image: AssetImage("assets/images/${photoName}"),
fit: BoxFit.fill,
),
),
),
),
const SizedBox(
height: 10,
),
Expanded(
flex: 1,
child: Row(
mainAxisAlignment: MainAxisAlignment.start,
children: [
const SizedBox(
width: 20,
),
Icon(Icons.location_on, color: Colors.blue),
Text(
"${cityName}",
style: const TextStyle(
fontSize: 16, fontWeight: FontWeight.bold),
),
],
),
),
Expanded(
flex: 1,
child: Row(
mainAxisAlignment: MainAxisAlignment.start,
children: [
const SizedBox(
width: 20,
),
const Icon(
Icons.star,
color: Colors.yellow,
),
Text(
"${cityScore}",
style: const TextStyle(
fontSize: 16,
fontWeight: FontWeight.bold,
),
),
const Padding(
padding: EdgeInsets.fromLTRB(95, 0, 0, 0),
child: Icon(Icons.arrow_forward_ios),
),
],
),
),
const SizedBox(
height: 10,
),
],
),
);
}
}
This is the home. If you want to use tabbar.
import 'package:circle_bottom_navigation_bar/circle_bottom_navigation_bar.dart';
import 'package:circle_bottom_navigation_bar/widgets/tab_data.dart';
import 'package:flutter/material.dart';
import 'package:inovatif/third_screen.dart';
import 'first_screen.dart';
import 'second_screen.dart';
class HomeView extends StatefulWidget {
HomeView({Key? key}) : super(key: key);
static String routeName = 'home';
#override
State<HomeView> createState() => _HomeViewState();
}
class _HomeViewState extends State<HomeView> {
int currentPage = 0;
final List<Widget> _pages = [
FirstScreen(),
SecondScreen(),
ThirdScreen(),
];
// This widget is the root of your application.
#override
Widget build(BuildContext context) {
final size = MediaQuery.of(context).size;
final viewPadding = MediaQuery.of(context).viewPadding;
double barHeight;
double barHeightWithNotch = 67;
double arcHeightWithNotch = 67;
if (size.height > 700) {
barHeight = 70;
} else {
barHeight = size.height * 0.1;
}
if (viewPadding.bottom > 0) {
barHeightWithNotch = (size.height * 0.07) + viewPadding.bottom;
arcHeightWithNotch = (size.height * 0.075) + viewPadding.bottom;
}
return Scaffold(
appBar: AppBar(backgroundColor: Colors.transparent, elevation: 0),
body: _pages[currentPage],
bottomNavigationBar: buildCircleBottomNavigationBar(
viewPadding, barHeightWithNotch, barHeight, arcHeightWithNotch),
);
}
CircleBottomNavigationBar buildCircleBottomNavigationBar(
EdgeInsets viewPadding,
double barHeightWithNotch,
double barHeight,
double arcHeightWithNotch) {
return CircleBottomNavigationBar(
initialSelection: currentPage,
barHeight: viewPadding.bottom > 0 ? barHeightWithNotch : barHeight,
arcHeight: viewPadding.bottom > 0 ? arcHeightWithNotch : barHeight,
itemTextOff: viewPadding.bottom > 0 ? 0 : 1,
itemTextOn: viewPadding.bottom > 0 ? 0 : 1,
circleOutline: 15.0,
shadowAllowance: 0.0,
circleSize: 50.0,
blurShadowRadius: 50.0,
circleColor: Colors.purple,
activeIconColor: Colors.white,
inactiveIconColor: Colors.grey,
tabs: getTabsData(),
onTabChangedListener: (index) => setState(() => currentPage = index),
);
}
List<TabData> getTabsData() {
return [
TabData(
icon: Icons.home,
iconSize: 25.0,
title: 'Home',
fontSize: 12,
fontWeight: FontWeight.bold,
),
TabData(
icon: Icons.phone,
iconSize: 25,
title: 'Emergency',
fontSize: 12,
fontWeight: FontWeight.bold,
),
TabData(
icon: Icons.search,
iconSize: 25,
title: 'Search Place',
fontSize: 12,
fontWeight: FontWeight.bold,
),
// TabData(
// icon: Icons.alarm,
// iconSize: 25,
// title: 'Alarm',
// fontSize: 12,
// fontWeight: FontWeight.bold,
// ),
];
}
}
To create an page like this you will need to know about Text,SingleChildScrollView set scroll direction to horizontal,Bottom Navigation bar,Banner etc.
when I am increasing my quantity of one product then all product's quantity is increasing, so how to solve it.
This is my product page:
import 'dart:convert';
import 'package:carousel_pro/carousel_pro.dart';
import 'package:flutter/material.dart';
import 'package:fluttertoast/fluttertoast.dart';
import 'package:hospital/Authentication/LoginLogoutScreenPage/login.dart';
import 'package:hospital/CartPage/Cart_Api/cart_api.dart';
import 'package:hospital/CartPage/pages/cartPage.dart';
import 'package:hospital/Drawer/dropdown_menu.dart';
import 'package:hospital/ProductDetailsPage/product_detailPage.dart';
import 'package:hospital/ProductDetailsPage/related_product_page.dart';
import 'package:hospital/SecondSection/Medicine/medicine_page.dart';
import 'package:hospital/constant.dart';
import 'package:hospital/customApiVariable.dart';
import 'package:http/http.dart' as http;
import 'package:line_icons/line_icons.dart';
import 'package:provider/provider.dart';
class DetailPage extends StatefulWidget {
final plistId;
const DetailPage({Key key, this.plistId}) : super(key: key);
#override
_DetailPageState createState() => _DetailPageState();
}
class _DetailPageState extends State<DetailPage> {
final GlobalKey<FormState> _formKey = GlobalKey();
int quantity = 1;
var response;
var detailPageApi;
#override
void initState() {
super.initState();
fetchData(widget.plistId);
}
fetchData(var consultWithDoctor) async {
var api = Uri.parse(
'$ecommerceBaseUrl/productListApi.php?a2rTokenKey=$a2rTokenKey&plistId=${widget.plistId}');
response = await http.get(
api,
);
print("detailPageApi " + api.toString());
print("detailPageBody " + response.body);
detailPageApi = jsonDecode(response.body);
print("detailPagelist " + detailPageApi.toString());
setState(() {});
}
Future _submit() async {
var errorMessage = 'Authentication Failed';
if (successfully_add_cart_status.toString() == 'false') {
errorMessage = 'Please try again later';
print(errorMessage);
_showerrorDialog(errorMessage);
} else {
errorMessage = 'Product Succesfully Added to Cart';
print(errorMessage);
_showerrorDialog(errorMessage);
}
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
backgroundColor: kGreen,
title: Text(
"Details",
style: TextStyle(fontStyle: FontStyle.italic),
),
actions: [
IconButton(
icon: Icon(Icons.shopping_cart),
// onPressed: () => print("open cart"),
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(builder: (context) => Cartpage()),
);
},
),
DropDownMenu(),
],
),
body: Container(
child: response != null
? ListView.builder(
itemCount: detailPageApi.length.clamp(0, 1),
scrollDirection: Axis.vertical,
physics: ScrollPhysics(),
shrinkWrap: true,
itemBuilder: (context, index) {
var details = detailPageApi[index];
if (details['num'] == 0) {
return Center(
child: CircularProgressIndicator(
backgroundColor: Colors.white,
),
);
}
return Column(
children: <Widget>[
Hero(
tag: "1",
child: SizedBox(
height: 300.0,
width: 300.0,
child: Carousel(
boxFit: BoxFit.cover,
autoplay: false,
animationCurve: Curves.fastOutSlowIn,
animationDuration: Duration(milliseconds: 800),
dotSize: 6.0,
dotIncreasedColor: Colors.black,
dotBgColor: Colors.transparent,
// dotPosition: DotPosition.topRight,
dotVerticalPadding: 10.0,
showIndicator: true,
indicatorBgPadding: 7.0,
images: [
NetworkImage(details['pImgImg']),
],
),
),
),
SizedBox(
height: 50,
),
Padding(
padding: const EdgeInsets.only(left: 20, right: 20),
child: Row(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text(
"Name :",
style: TextStyle(
fontSize: 18,
height: 1.5,
fontWeight: FontWeight.w500),
),
SizedBox(
width: 20,
),
Flexible(
child: Text(
// widget.details,
details['productName'],
style: TextStyle(
fontSize: 17,
height: 1.5,
fontWeight: FontWeight.w500),
),
),
],
),
),
SizedBox(
height: 20,
),
Padding(
padding: const EdgeInsets.only(left: 20, right: 20),
child: Row(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text(
"Details :",
style: TextStyle(
fontSize: 18,
height: 1.5,
fontWeight: FontWeight.w500),
),
SizedBox(
width: 20,
),
Flexible(
child: Text(
// widget.details,
details['productDescription'],
style: TextStyle(
fontSize: 17,
height: 1.5,
fontWeight: FontWeight.w500),
),
),
],
),
),
SizedBox(
height: 20,
),
Padding(
padding: const EdgeInsets.only(left: 20, right: 20),
child: Row(
children: <Widget>[
Text(
"Price :",
style: TextStyle(
fontSize: 18, fontWeight: FontWeight.w500),
),
SizedBox(
width: 20,
),
Row(
children: <Widget>[
Text(
// "Rs " + widget.pPromotionPrice,
"Rs 55.0",
style: TextStyle(
fontSize: 17,
fontWeight: FontWeight.w500),
),
SizedBox(
width: 20,
),
Text(
// "Rs " + widget.pPrice,
"Rs 100",
style: TextStyle(
fontSize: 18,
fontWeight: FontWeight.w500,
// color: warning,
decoration: TextDecoration.lineThrough),
)
],
)
],
),
),
SizedBox(
height: 25,
),
Padding(
padding: const EdgeInsets.only(right: 20, left: 20),
child: Row(
children: <Widget>[
Text(
"Qty :",
style: TextStyle(
fontSize: 17, fontWeight: FontWeight.w500),
),
SizedBox(
width: 20,
),
Row(
children: <Widget>[
InkWell(
onTap: () {
if (quantity > 1) {
setState(() {
quantity = --quantity;
});
}
// minus here
},
child: Container(
width: 25,
height: 25,
decoration: BoxDecoration(
// border: Border.all(color: primary),
shape: BoxShape.circle),
child: Icon(
LineIcons.minus,
size: 15,
),
),
),
SizedBox(
width: 15,
),
Text(
quantity.toString(),
style: TextStyle(fontSize: 16),
),
SizedBox(
width: 15,
),
InkWell(
onTap: () {
setState(() {
quantity = ++quantity;
});
// minus here
},
child: Container(
width: 25,
height: 25,
decoration: BoxDecoration(
// border: Border.all(color: primary),
shape: BoxShape.circle),
child: Icon(
LineIcons.plus,
size: 15,
),
),
),
],
)
],
),
),
SizedBox(
height: 50,
),
InkWell(
onTap: () async {
if (var_uid.toString() != null.toString()) {
_submit();
var qty = quantity.toString();
var plistId = widget.plistId;
print('pplistid' + plistId);
var uid = var_uid.toString();
var sid = var_sid.toString();
print('uuid' + uid);
print('ssid' + sid);
var response =
await add_to_cart_fn(qty, plistId, uid, sid);
print("rsp: " + response['msg']);
} else {
Navigator.of(context).push(MaterialPageRoute(
builder: (context) => LoginPage()));
}
},
// },
child: Padding(
padding: EdgeInsets.only(left: 20, right: 20),
child: Container(
height: 45,
width: double.infinity,
decoration: BoxDecoration(
color: kGreen,
borderRadius: BorderRadius.circular(30)),
child: Center(
child: Text(
"ADD TO CART",
style: TextStyle(
color: kWhite,
fontSize: 20,
),
),
),
),
),
),
SizedBox(height: 20.0),
RelatedProductPage(plistId: widget.plistId)
],
);
})
: Center(
child: CircularProgressIndicator(
backgroundColor: Colors.white,
),
),
),
);
}
void _showerrorDialog(String message) {
Fluttertoast.showToast(
msg: message,
toastLength: Toast.LENGTH_SHORT,
gravity: ToastGravity.BOTTOM,
timeInSecForIosWeb: 1,
backgroundColor: Colors.grey[350],
textColor: Colors.black,
fontSize: 16.0);
}
}
You are using the same quantity variable against each item. Changing the value on one of those will cause all items to update. What you need to do is to keep a Map of quantity selected against product id. That way whenever you increase or decrease the quantity, you update the quantity against that specific product id and the rest will remain unchanged.
EDIT: Here is how this will work
//Create a new map to save the product id and product selected quantity
var productQuantity = new Map<int, int>()
//When setting the values of the product, set the quantity from the map
Padding(
padding: const EdgeInsets.only(right: 20, left: 20),
child: Row(
children: <Widget>[
Text(
"Qty :",
style: TextStyle(
fontSize: 17, fontWeight: FontWeight.w500),
),
SizedBox(width: 20,),
Row(
children: <Widget>[
InkWell(
onTap: () {
if (quantity > 1) {
setState(() {
//Changed here
productQuantity['$productId'] -= 1;
});
}
},
child: Container(
width: 25,
height: 25,
decoration: BoxDecoration(shape: BoxShape.circle),
child: Icon(
LineIcons.minus,
size: 15,
),
),
),
SizedBox(width: 15,),
Text(
//Changed here
productQuantity['$productId'].toString(),
style: TextStyle(fontSize: 16),
),
SizedBox(width: 15,),
InkWell(
onTap: () {
setState(() {
//Changed here
productQuantity['$productId'] += 1;
});
},
child: Container(
width: 25,
height: 25,
decoration: BoxDecoration(
shape: BoxShape.circle),
),
child: Icon(
LineIcons.plus,
size: 15,
),
),
),
],
)
],
),
)
you set the common quantity in all products so change it and set it inside the class.
Please Check the example
import 'package:flutter/material.dart';
class QuantityUpdatePage extends StatefulWidget {
#override
_QuantityUpdatePageState createState() => _QuantityUpdatePageState();
}
class _QuantityUpdatePageState extends State<QuantityUpdatePage> {
List<Product> productArray = [];
#override
void initState() {
super.initState();
WidgetsBinding.instance!.addPostFrameCallback((timeStamp) {
productArray.clear();
productArray.add(Product(1, "Product 1", 1));
productArray.add(Product(2, "Product 2", 1));
productArray.add(Product(3, "Product 3", 1));
productArray.add(Product(4, "Product 4", 1));
productArray.add(Product(5, "Product 5", 1));
setState(() {});
});
}
#override
void dispose() {
super.dispose();
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: Text("QUANTITY UPDATE")),
body: ListView.builder(
shrinkWrap: true,
itemCount: productArray.length,
itemBuilder: (context, index) {
return Padding(
padding: const EdgeInsets.only(right: 20, left: 20),
child: ListView(
shrinkWrap: true,
physics: NeverScrollableScrollPhysics(),
children: [
SizedBox(
height: 20,
),
Row(
mainAxisSize: MainAxisSize.min,
children: [
Text(productArray[index].productName),
SizedBox(
width: 40,
),
Row(
children: <Widget>[
Text(
"Qty :",
style: TextStyle(fontSize: 17, fontWeight: FontWeight.w500),
),
SizedBox(
width: 20,
),
Row(
children: <Widget>[
InkWell(
onTap: () {
if (productArray[index].quantity > 1) {
setState(() {
productArray[index].quantity = --productArray[index].quantity;
});
}
// minus here
},
child: Container(
width: 25,
height: 25,
decoration: BoxDecoration(
// border: Border.all(color: primary),
shape: BoxShape.circle),
child: Icon(
Icons.minimize,
size: 15,
),
),
),
SizedBox(
width: 15,
),
Text(
productArray[index].quantity.toString(),
style: TextStyle(fontSize: 16),
),
SizedBox(
width: 15,
),
InkWell(
onTap: () {
setState(() {
productArray[index].quantity = ++productArray[index].quantity;
});
// minus here
},
child: Container(
width: 25,
height: 25,
decoration: BoxDecoration(
// border: Border.all(color: primary),
shape: BoxShape.circle),
child: Icon(
Icons.add,
size: 15,
),
),
),
],
)
],
),
],
),
SizedBox(
height: 20,
),
],
),
);
}));
}
}
class Product {
String productName;
int quantity;
int id;
Product(this.id, this.productName, this.quantity);
}
#Deepak if you don't understand Maps use list instead, with a value being updated for each index. Initialize a list of int types with some large values like 1000000, and update the value for each index. use ListView builder to fetch the data from the API for each index.
List<int> quantity = List.empty(growable: true);
OR
List<int> quantity = List.filled(10000, []);
For updating quantity:-
quantity[index] += 1;
For Grid view thing, refer this example from CodeGrepper:-
GridView.count(
// Create a grid with 2 columns. If you change the scrollDirection to
// horizontal, this produces 2 rows.
crossAxisCount: 2,
// Generate 100 widgets that display their index in the List.
children: List.generate(100, (index) {
return Center(
child: Text(
'Item $index',
style: Theme.of(context).textTheme.headline5,
),
);
}),
);
Here I have a form like this. i want to change the value of the blue button week below when i swipe left or right of Calendar Week. What should i do guys ?. It can only changed when I clicked on the number
Here is the code I'm using:
import 'package:flutter/material.dart';
import 'package:myhumgupdate/App/Config/palette.dart';
import 'package:myhumgupdate/Widgets/dialog_loading.dart';
import 'package:myhumgupdate/giangvien/Screens/XemTKB/TKBTheoTuan/tkbtuan_viewmodel.dart';
import 'package:myhumgupdate/Widgets/calender_week.dart';
import 'package:myhumgupdate/giangvien/models/meeting.dart';
import 'package:myhumgupdate/giangvien/models/meetingdata_source.dart';
import 'package:stacked/stacked.dart';
import 'package:syncfusion_flutter_calendar/calendar.dart';
class TKBTuan extends StatefulWidget {
#override
_TKBTuanState createState() => _TKBTuanState();
}
final String _customTimeLabelText = 'Tiết';
class _TKBTuanState extends State<TKBTuan> {
#override
Widget build(BuildContext context) {
return ViewModelBuilder<TKBTuanViewModel>.reactive(
onModelReady: (model) => Future.delayed(Duration.zero,
() => DialogLoading.show(context, model.getTkbTuan(model.timeNow))),
builder: (context, TKBTuanViewModel model, child) => Column(
children: [
Row(
children: [
Expanded(
child: Container(
margin: EdgeInsets.only(
top: 18,
),
child: CalendarWeek(
calendarController: model.calendarController,
press: (DateTime date, _, __) {
model.getTkbTuan(date);
},
),
),
),
Container(
width: 40,
height: 56,
margin: EdgeInsets.only(right: 3),
padding: EdgeInsets.symmetric(horizontal: 4, vertical: 5),
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(10),
color: Palette.kPrimaryColor,
),
child: Center(
child: Text(
"Week ${model.week}",
style: TextStyle(
color: Colors.white,
fontSize: 12,
fontWeight: FontWeight.bold),
textAlign: TextAlign.center,
),
),
),
],
),
Expanded(
child: SfCalendar(
view: CalendarView.week,
firstDayOfWeek: 1,
maxDate: DateTime(DateTime.now().year, DateTime.now().month,
DateTime.now().day, 00, 45, 0),
minDate: DateTime(DateTime.now().year, DateTime.now().month,
DateTime.now().day, 00, 45, 0),
headerHeight: 0,
viewHeaderHeight: 0,
dataSource: MeetingDataSource(model.getDataSource),
appointmentTimeTextFormat: 'hh:mm:ss a',
appointmentBuilder: appointmentBuilder,
initialDisplayDate: DateTime(DateTime.now().year,
DateTime.now().month, DateTime.now().day, 00, 45, 0),
monthViewSettings: MonthViewSettings(showAgenda: true),
timeSlotViewSettings: TimeSlotViewSettings(
startHour: 0,
endHour: 16,
timeFormat: _customTimeLabelText + " H",
timeIntervalHeight: 70,
timeTextStyle: TextStyle(
color: Colors.black,
fontWeight: FontWeight.bold,
)),
// selectionDecoration: BoxDecoration(
// color: Colors.transparent,
// border: Border.all(color: Colors.red, width: 1),
// borderRadius: const BorderRadius.all(Radius.circular(4)),
// shape: BoxShape.rectangle,
// ),
),
),
],
),
viewModelBuilder: () => TKBTuanViewModel());
}
}
Widget appointmentBuilder(BuildContext context,
CalendarAppointmentDetails calendarAppointmentDetails) {
final Meeting appointment = calendarAppointmentDetails.appointments.first;
return Container(
width: calendarAppointmentDetails.bounds.width,
height: calendarAppointmentDetails.bounds.height,
// color: appointment.background,
decoration: BoxDecoration(
color: appointment.background,
border: Border.all(
color: Colors.grey,
width: 0.5,
),
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: [
Padding(
padding: const EdgeInsets.fromLTRB(2.0, 0, 0, 5.0),
child: Text(
appointment.eventName,
// textAlign: TextAlign.center,
style: TextStyle(fontSize: 12, fontWeight: FontWeight.w500),
),
),
Padding(
padding: const EdgeInsets.fromLTRB(2.0, 0, 0, 0),
child: Text(
"Phòng: ${appointment.subText}",
style: TextStyle(fontSize: 10, fontStyle: FontStyle.italic),
),
)
],
),
);
}
And if there is no way to change the value like that, what should I do and how can I change that?
In the Flutter Event Calendar, you can programmatically select the date using selectedDate property of the CalendarController.
Inside the state, initialize the calendar controller.
final CalendarController _calendarController= CalendarController();
Using onViewChanged callback of the Flutter event calendar, you can set the first date of visible dates as selected date.
child: SfCalendar(
view: CalendarView.month,
controller: _calendarController,
onViewChanged: viewChanged,
),
void viewChanged(ViewChangedDetails viewChangedDetails) {
SchedulerBinding.instance!.addPostFrameCallback((Duration duration) {
_calendarController.selectedDate = viewChangedDetails.visibleDates[0];
});
}
Wrap your Widget in GestureDetector and use onPanUpdate like this:
GestureDetector(onPanUpdate: (details) {
if (details.delta.dx > 0) {
// swiping in right direction
// update week number
}
});