I am using PageView builder in my flutter app to display scrollable cards. For that I have first created a widget _buildCarousel and widget _buildCarouselItem to display it using my defined by defined widget for card. I have also defined a List of Maps (eventsData) for the events' data.
Widget _buildCarousel(BuildContext context) {
List<Map> EventsData = [
{
"title": "Event ABC",
"subTitle": "Organised by XYZ",
"desc": "Event description.",
"date": "13th Jan, 2022",
"time": "4:00 pm",
"lastDate": "11th Jan, 2022"
},
{
"title": "Event MNT",
"subTitle": "Organised by XYZ",
"desc": "Event description.",
"date": "13th Jan, 2022",
"time": "4:00 pm",
"lastDate": "11th Jan, 2022"
},
{
"title": "Event WOQ",
"subTitle": "Organised by STU",
"desc": "Event description." ,
"date": "13th Jan, 2022",
"time": "4:00 pm",
"lastDate": "11th Jan, 2022"
}
];
return SizedBox(
height: 500.0,
child: PageView.builder(
itemCount: EventsData.length,
controller: PageController(viewportFraction: 1),
itemBuilder: (BuildContext context, int itemIndex) {
return _buildCarouselItem(context);
},
),
);
}
Widget _buildCarouselItem(BuildContext context) {
return Padding(
padding: EdgeInsets.symmetric(horizontal: 4.0), child: EventCard());
}
Here EventCard is my defined widget for a Card. Code for EventCard widget is:
class EventCard extends StatelessWidget {
EventCard({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return Card(
elevation: 10,
shadowColor: Colors.black,
margin: EdgeInsets.all(25.0),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(16.0),
),
color: const Color(0xffB7AC44),
child: SizedBox(
width: MediaQuery.of(context).size.width,
height: MediaQuery.of(context).size.height,
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
children: [
SizedBox(
height: 10,
),
Text(
'Title',
style: TextStyle(
fontSize: 22,
color: Colors.white,
fontWeight: FontWeight.w900,
fontFamily: 'Montserrat'),
),
SizedBox(
height: 10,
),
Text(
'Sub Title',
style: TextStyle(
fontSize: 16,
color: Colors.black,
fontWeight: FontWeight.w700,
fontFamily: 'Montserrat'),
),
SizedBox(
height: 10,
),
SizedBox(
height: 100,
child: Text(
'Description',
maxLines: 6,
overflow: TextOverflow.ellipsis,
style: TextStyle(fontSize: 14, fontWeight: FontWeight.w400),
),
),
SizedBox(
height: 20,
),
Spacer(),
Column(
children: [
Align(
alignment: Alignment.bottomLeft,
child: Text(
'Date: 12 May, 2022',
style: TextStyle(
fontSize: 14,
color: Colors.black,
fontWeight: FontWeight.w700,
fontFamily: 'Montserrat'),
),
),
Align(
alignment: Alignment.bottomLeft,
child: Text(
'Time: 5:00 pm',
style: TextStyle(
fontSize: 14,
color: Colors.black,
fontWeight: FontWeight.w700,
fontFamily: 'Montserrat'),
),
),
Align(
alignment: Alignment.bottomLeft,
child: Text(
'Last date to register: 31 May, 2022',
style: TextStyle(
fontSize: 14,
color: Colors.black,
fontWeight: FontWeight.w700,
fontFamily: 'Montserrat'),
),
),
],
),
SizedBox(
height: 20,
),
],
),
),
),
);
}
}
Here's the output:
As you can see, here the values for the different text widgets in Card are static. But I want these values to be based on the items of the List EventsData that I have defined earlier in _buidCarousel. I am unable to figure out how should I do that. Where should exactly I define this eventsData list and how can I take these values for my card widget.
CodePudding user response：
replace this '''
List<Map> EventsData = [
{
"title": "Event ABC",
"subTitle": "Organised by XYZ",
"desc": "Event description.",
"date": "13th Jan, 2022",
"time": "4:00 pm",
"lastDate": "11th Jan, 2022"
},
{
"title": "Event MNT",
"subTitle": "Organised by XYZ",
"desc": "Event description.",
"date": "13th Jan, 2022",
"time": "4:00 pm",
"lastDate": "11th Jan, 2022"
},
{
"title": "Event WOQ",
"subTitle": "Organised by STU",
"desc": "Event description." ,
"date": "13th Jan, 2022",
"time": "4:00 pm",
"lastDate": "11th Jan, 2022"
}
];
''' With this '''
class Model {
String title;
String subTitle;
String desc;
String date;
String time;
String lastDate;
Model({
required this.title,
required this.subTitle,
required this.desc,
required this.date,
required this.time,
required this.lastDate,
});
}
Widget _buildCarousel(BuildContext context) {
List<Model> eventsData = [
Model(
title: "Event ABC",
subTitle: "Organised by XYZ",
desc: "Event description.",
date: "13th Jan, 2022",
time: "4:00 pm",
lastDate: "11th Jan, 2022",
),
Model(
title: "Event",
subTitle: "Organised",
desc: "Event description.",
date: "13th Jan, 2022",
time: "5:00 pm",
lastDate: "2th Jan, 20203",
),
Model(
title: "Event WOQ",
subTitle: "Organised by STU",
desc: "Event description.",
date: "13th Jan, 2022",
time: "4:00 pm",
lastDate: "11th Jan, 2022",
),
];
return SizedBox(
height: 500.0,
child: PageView.builder(
itemCount: eventsData.length,
controller: PageController(viewportFraction: 1),
itemBuilder: (BuildContext context, int itemIndex) {
return Padding(
padding: const EdgeInsets.symmetric(horizontal: 4.0),
child: EventCard(
model: eventsData[itemIndex],
));
},
),
);
}
'''
and your card resave Model and this model has data ''' class EventCard extends StatelessWidget { const EventCard({ Key? key, required this.model, }) : super(key: key); final Model model;
@override
Widget build(BuildContext context) {
return Card(
elevation: 10,
shadowColor: Colors.black,
margin: const EdgeInsets.all(25.0),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(16.0),
),
color: const Color(0xffB7AC44),
child: SizedBox(
width: MediaQuery.of(context).size.width,
height: MediaQuery.of(context).size.height,
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
children: [
const SizedBox(
height: 10,
),
Text(
model.title,
style: const TextStyle(
fontSize: 22,
color: Colors.white,
fontWeight: FontWeight.w900,
fontFamily: 'Montserrat'),
),
const SizedBox(
height: 10,
),
Text(
model.subTitle,
style: const TextStyle(
fontSize: 16,
color: Colors.black,
fontWeight: FontWeight.w700,
fontFamily: 'Montserrat'),
),
const SizedBox(
height: 10,
),
SizedBox(
height: 100,
child: Text(
model.desc,
maxLines: 6,
overflow: TextOverflow.ellipsis,
style: const TextStyle(
fontSize: 14, fontWeight: FontWeight.w400),
),
),
const SizedBox(
height: 20,
),
const Spacer(),
Column(
children: [
Align(
alignment: Alignment.bottomLeft,
child: Text(
model.date,
style: const TextStyle(
fontSize: 14,
color: Colors.black,
fontWeight: FontWeight.w700,
fontFamily: 'Montserrat'),
),
),
Align(
alignment: Alignment.bottomLeft,
child: Text(
model.time,
style: const TextStyle(
fontSize: 14,
color: Colors.black,
fontWeight: FontWeight.w700,
fontFamily: 'Montserrat'),
),
),
Align(
alignment: Alignment.bottomLeft,
child: Text(
model.lastDate,
style: const TextStyle(
fontSize: 14,
color: Colors.black,
fontWeight: FontWeight.w700,
fontFamily: 'Montserrat'),
),
),
],
),
const SizedBox(
height: 20,
),
],
),
),
),
);
}
}
'''
CodePudding user response：
- Add the required parameters as members to your
EventCardclass like this (this shows only title, but you can add the others as well):
class EventCard extends StatelessWidget {
final String title;
- Modify the constructor to initialize these members:
EventCard({required this.title, Key? key}) : super(key: key);
- Use these members in
EventCardclass:
Text(
title, //'Title',
style: TextStyle(...
- In the
itemBuilderyou can pass the corresponding value directly to theEventCardconstructor:
itemBuilder: (BuildContext context, int itemIndex) =>
Padding(
padding: EdgeInsets.symmetric(horizontal: 4.0),
child: EventCard(title: EventsData[itemIndex]["title"] ?? ''),
}