I want to change screens with custom tab bar,i want when i click Allshoes(the page of all shoes should display) then jordan and the rest, i have tried so many ways but it is not working for me. please assit me.
The image
I want to change screens with custom tab bar,i want when i click Allshoes(the page of all shoes should display) then jordan and the rest, i have tried so many ways but it is not working for me. please assit me.
`class MyTabBar extends StatefulWidget {
const MyTabBar({Key? key}) : super(key: key);
#override
State<MyTabBar> createState() => _MyTabBarState();
}
class _MyTabBarState extends State<MyTabBar>
with SingleTickerProviderStateMixin{
int _isSelectedIndex = 0;
late TabController _tabController;
#override
void initState() {
super.initState();
_tabController = TabController(vsync: this, length: 6);
}
#override
void dispose() {
_tabController.dispose();
super.dispose();
}
List<Widget> pageList = [
const AllShoesPage(),
const JordanPage(),
const BasketBallPage(),
const TennisPage(),
const WalkingPage(),
const SoccerPage()
];
#override
Widget build(BuildContext context) {
return Column(
children: [
SizedBox(
height: 60.0,
width: double.infinity,
child: TabBar(
controller: _tabController,
tabs: [ListView.builder(
physics: const BouncingScrollPhysics(),
itemCount: tabBarItems.length,
scrollDirection: Axis.horizontal,
itemBuilder: (BuildContext context, index) {
return Column(
children: [
GestureDetector(
onTap: () => setState(() =>_isSelectedIndex = index),
child: Container(
margin: const EdgeInsets.all(5.0),
height: 45,
width: MediaQuery.of(context).size.width / 5,
decoration: BoxDecoration(
color: _isSelectedIndex == index
? Appcolors.primaryColor
: Appcolors.whiteColor,
borderRadius: BorderRadius.circular(10.0),
),
child: Center(
child: Text(
tabBarItems[index],
style: GoogleFonts.poppins(
color: _isSelectedIndex == index
? Appcolors.whiteColor
: Appcolors.darkGreyColor),
),
),
)
),
Visibility(
visible: _isSelectedIndex == index,
child: Container(
width: 5,
height: 5,
decoration: const BoxDecoration(
color: Appcolors.primaryColor,
shape: BoxShape.circle),
),
)
],
);
},
)]
),
),
TabBarView(
controller: _tabController,
children: pageList)
],
);
}
}
`
Here, tabs require list of Widgets but you provide only one Widget which is listView.builder, instead try this
tabs: List.generate(tabBarItems.length, (index) => MyWidget())
Since you are already using TabBar so you don't need to use GestureDetector(), also if you don't want horizontal scrolling effect make isScrollable: flase,
also wrap TabBarView with Expanded Widget like this
Expanded(child: TabBarView())
Related
I have a create so simple slidable view pager with CarouselSlider:
return Scaffold(
body: CarouselSlider(
options: CarouselOptions(
viewportFraction: 1,
// aspectRatio: 1,
height: double.maxFinite,
// enlargeCenterPage: true,
),
items: List.generate(
10,
(i) => Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Expanded(
child: Container(
color: (i % 2 == 0) ? Colors.red : Colors.green,
),
),
Text('text $i', style: TextStyle(fontSize: 16.0)),
],
)),
));
This is its result:
But as you can see next container connects to the first widget, I want when the first widget to be swapped to the left, the next widget appears under the first widget Not next to it. It looks like the following widget is fixed and we remove the top widget.
You can use a package called stacked_page_view, it is very simple, lightweight, and similar to the same original PageView in usage.
Example Snippet:
PageView.builder(
itemCount: 10,
scrollDirection: Axis.vertical,
controller: pageController,
itemBuilder: (context, index) {
return StackPageView(
controller: pageController,
index: index,
child: Container(
color: (colors..shuffle()).first,
child: Center(
child: Text(
'$index',
style: TextStyle(
color: Colors.white,
fontSize: 25,
),
),
),
),
);
},
)
Note: You can control the scroll axis with the property scrollDirection inside PageView.builder() with values of Axis.vertical or Axis.horizontal.
I finally find a way to create stack page view, This is a full codes:
import 'package:flutter/src/foundation/key.dart';
import 'package:flutter/src/widgets/framework.dart';
import 'package:flutter/material.dart';
import 'dummy_data.dart';
import 'page_view_item.dart';
class HomePage extends StatefulWidget {
const HomePage({Key? key}) : super(key: key);
#override
State<HomePage> createState() => _HomePageState();
}
class _HomePageState extends State<HomePage> {
/// The current page of the page view
double _page = 0;
/// The index of the leftmost element of the list to be displayed
int get _firstItemIndex => _page.toInt();
/// Controller to get the current position of the page view
final _controller = PageController(
viewportFraction: 0.5,
);
/// The width of a single item
late final _itemWidth =
MediaQuery.of(context).size.width * _controller.viewportFraction;
#override
void initState() {
super.initState();
_controller.addListener(() => setState(() {
_page = _controller.page!;
}));
}
#override
void dispose() {
super.dispose();
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: const Text("LV Scroll"),
),
body: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Stack(
children: [
Positioned.fill(
child: Align(
alignment: Alignment.centerLeft,
child: SizedBox(
width: _itemWidth,
child: FractionallySizedBox(
child: PageViewItem(
index: _firstItemIndex,
width: _itemWidth,
url: model[_firstItemIndex],
),
),
),
),
),
SizedBox(
height: 250,
child: PageView.builder(
padEnds: false,
controller: _controller,
itemBuilder: (context, index) {
return Opacity(
opacity: index <= _firstItemIndex ? 0 : 1,
child: PageViewItem(
index: index,
width: _itemWidth,
url: model[index],
),
);
},
itemCount: model.length,
),
),
],
),
],
),
);
}
}
it's result :
and its reference;
You can use a package called expandable_page_view, it is a PageView widget adjusting its height to currently displayed page. It accepts the same parameters as classic PageView.
ExpandablePageView.builder(
itemCount: 3,
itemBuilder: (context, index) {
return Container(color: Colors.blue);
},
),
I need some help when implementing the search bar funcionality in Flutter.
I am implementing flappy_search_bar: https://pub.dev/packages/flappy_search_bar
However, it does return any value when I try to search something.
Is there anything I am missing? Seems trivial this kind of implementations, just query some list and include the results in other list but I cannot figure out the way to do it.
class MainPage extends StatefulWidget {
const MainPage({Key? key}) : super(key: key);
#override
_MainPageState createState() => _MainPageState();
}
class _MainPageState extends State<MainPage> {
TextEditingController textController = TextEditingController();
Future<List<dynamic>> search(String search) async {
await Future.delayed(Duration(seconds: 2));
List<dynamic> dogs = BreedList.where((dog) => dog['breed'].contains(search)).toList();
return dogs;
// return List(search.length, (int index) {
// return DogClass(breed: "$search $index");
// });
}
#override
void initState() {
super.initState();
}
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.white,
body: Column(children: [
Container(
margin: const EdgeInsets.only(top: 60, bottom: 15),
padding: const EdgeInsets.only(left: 20, right: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Center(
child: Container(
width: MediaQuery.of(context).size.width -
(MediaQuery.of(context).size.width / 3.5),
height: 80,
child: SearchBar<dynamic>(
searchBarStyle: SearchBarStyle(borderRadius: BorderRadius.circular(20)),
onSearch: search,
cancellationWidget: Text('Cancel'),
emptyWidget: SizedBox.shrink(),
shrinkWrap:true,
onItemFound: (dynamic dogs, int index) {
return Container(
child: ListTile(
title: Text(dogs.breed.toString())
),
);
}),
//child: const Icon(Icons.search, color: Colors.white),
decoration: BoxDecoration(
borderRadius:
BorderRadius.circular(Dimensions.radius20),
color: Colors.white),
),
)
],
),
),
//wrapping with this widgets the scroll problem is solved in list
const Expanded(
child: SingleChildScrollView(
child: BookPageBody(),
)),
]));
}
}
I've set up this Carousel using a PageView.builder. It displays 5 tiles at a time.
Once the user has swiped all the way over to the right & pulls on the last tile (see image)...I'd like to move onto the next set of 5 tiles in an array.
Is there an event handler for this? I've managed to set up a listener that can determine when the user has swiped to the last tile, but cannot figure out how to tell when they're pulling on this so it can be refreshed.
Appreciate any help I can get on this. Code below :)
import 'package:flutter/material.dart';
import 'package:smooth_page_indicator/smooth_page_indicator.dart';
class RecommendationPanel extends StatefulWidget {
#override
State<StatefulWidget> createState() {
return _buildRecommendationPanel();
}
}
class _buildRecommendationPanel extends State<RecommendationPanel> {
PageController _pageController = PageController();
#override
void initState() {
_pageController = PageController(viewportFraction: 1.0);
_pageController.addListener(_scrollListener);
super.initState();
}
void dispose() {
_pageController.dispose();
super.dispose();
}
_scrollListener() {
if (_pageController.offset >= _pageController.position.maxScrollExtent &&
!_pageController.position.outOfRange) {
setState(() {
//This is working in the sense that it tells when they're on the final tile
//I want it so knows when you drag to the right
print('Final tile');
//I could refresh the list and then just move everything back to #1 in the view...i.e. the last card [index 4] can now shift to 5
//_pageController.jumpToPage(0);
});
}
if (_pageController.offset <= _pageController.position.minScrollExtent &&
!_pageController.position.outOfRange) {
setState(() {
//Need to figure out how to work this - there's going to have to be another variable checking what place in the top N recommended array it is, and then adjust accordingly
print('Back to first tile');
//_pageController.jumpToPage(3);
});
}
}
#override
Widget build(BuildContext context) {
return Column(
mainAxisSize: MainAxisSize.min,
children: [
SizedBox(
//You may want to use aspect ratio here for tablet support
height: 270.0,
child: PageView.builder(
physics: const AlwaysScrollableScrollPhysics(),
itemCount: 5,
scrollDirection: Axis.horizontal,
controller: _pageController,
itemBuilder: (BuildContext context, int itemIndex) {
//I could potentially call something here to update the slider index
return _buildCarouselItem(context, itemIndex);
},
),
),
Container(
height: 30,
child: Center(
child: SmoothPageIndicator(
controller: _pageController,
count: 5,
effect: WormEffect(
spacing: 8.0,
dotHeight: 10,
dotWidth: 10,
activeDotColor: Colors.orange,
),
),
),
),
],
);
}
Widget _buildCarouselItem(BuildContext context, int itemIndex) {
List<String> labels = [
'Pub',
'Bar',
'Football Match',
'Nightclub',
'Book Festival',
'Six',
'Seven',
'Eight',
'Nine',
'Ten',
];
return Padding(
padding: EdgeInsets.symmetric(horizontal: 2.0),
child: Container(
height: double.infinity,
//color: Colors.red,
child: Column(
children: [
Container(
child: Card(
elevation: 2,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(10.0)),
child: Container(
// In here is where I should build each individual tile
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.all(Radius.circular(10.0)),
),
child: Container(
width: double.infinity,
height: 260,
child: Text(labels[itemIndex]),
),
),
),
),
],
),
),
);
}
Widget buildIndicator(BuildContext context, int itemIndex, int count) {
return AnimatedSmoothIndicator(
activeIndex: itemIndex,
count: count,
effect: WormEffect(
dotColor: Colors.grey,
activeDotColor: Colors.orange,
),
);
}
}
I need help to create scrollable body:
my screen
This is how my structure of body looks: build()
body: Padding(
padding: const EdgeInsets.all(30.0),
child: DragAndDropLists(
children: _contents,
onItemReorder: _onItemReorder,
onListReorder: _onListReorder,
axis: Axis.horizontal,
listWidth: 300,
listDraggingWidth: 300,
listPadding: EdgeInsets.all(20.0),
itemDivider: const Divider(
thickness: 4,
height: 10,
color: lightBlue,
),
itemDecorationWhileDragging: BoxDecoration(
color: Colors.white,
boxShadow: [
BoxShadow(
color: const Color(0xff004269).withOpacity(0.5),
spreadRadius: 2,
blurRadius: 3,
offset: const Offset(0, 0), // changes position of shadow
),
],
),
listInnerDecoration: BoxDecoration(
color: Theme.of(context).canvasColor,
borderRadius: BorderRadius.all(Radius.circular(5)),
),
lastItemTargetHeight: 2,
addLastItemTargetHeightToTop: true,
lastListTargetSize: 40,
),
),
I tried already ListView, SingleChildScrollView, Column
I don't know why but it's doesn't work
Maybe somebody has an idea what I can change to see scrollbar and can scroll it horizontally
Thank you
You seem to be using a bit of complex layout, but a simplified version would look something like this:
You can set scrollDirection property of ListView to Axis.horizontal and for scrollbar you can wrap ListView inside Scrollbar.
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatefulWidget {
MyApp({Key? key}) : super(key: key);
#override
State<MyApp> createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
final ScrollController _scrollController = ScrollController();
final List<int> _items = List<int>.generate(100, (int index) => index);
#override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: SizedBox(
height: 150,
child: Scrollbar(
isAlwaysShown: true,
controller: _scrollController,
child: ReorderableListView.builder(
scrollDirection: Axis.horizontal,
scrollController: _scrollController,
itemBuilder: buildItem,
itemCount: _items.length,
onReorder: (int oldIndex, int newIndex) {
setState(() {
if (oldIndex < newIndex) {
newIndex -= 1;
}
final int item = _items.removeAt(oldIndex);
_items.insert(newIndex, item);
});
},
),
),
),
));
}
Widget buildItem(context, index) {
return Container(
key: Key('$index'),
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(10),
color: Colors.green[200],
),
margin: const EdgeInsets.all(8.0),
height: 100,
width: 100,
child: Center(child: Text('${_items[index]}')),
);
}
}
Ignore the handles, they only appear on desktop, drag and drop works on mobile devices.
Try wrap Padding in your Scaffold with SingleChildScrollView
SingleChildScrollView(
scrollDirection: Axis.horizontal,
child: Padding(),
)
Other option that you can use is GridView, and ListView.
I have list of products in bottom sheet, when I choose any product I want to parent's widget to add it, unfortunately my product adds only after hot reload, or when I create a new route from bottom sheet to parent's widget, how can I solve this problem, any ideas? Here is the part of the bottom sheet code
class IceBottomSheet extends StatefulWidget {
const IceBottomSheet({Key? key}) : super(key: key);
#override
_IceBottomSheetState createState() => _IceBottomSheetState();
}
class _IceBottomSheetState extends State<IceBottomSheet> {
final _model = ProductWidgetsModel();
#override
Widget build(BuildContext context) {
List<Widget> productWidgetList = [];
products.forEach((product) =>
productWidgetList.add(SingleProductWidget(product: product)));
return Provider(
model: _model,
child: Expanded(
child: GridView.count(
crossAxisSpacing: 10,
mainAxisSpacing: 16,
shrinkWrap: true,
crossAxisCount: 2, children: productWidgetList),
),
);
}
}
class SingleProductWidget extends StatefulWidget {
final Product product;
const SingleProductWidget({Key? key, required this.product})
: super(key: key);
#override
State<SingleProductWidget> createState() => _SingleProductWidgetState();
}
class _SingleProductWidgetState extends State<SingleProductWidget> {
#override
Widget build(BuildContext context) {
final model = Provider.of(context)?.model;
return Padding(
padding: const EdgeInsets.all(5.0),
child:
Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
SizedBox(
width: double.infinity,
height: 100,
child: DecoratedBox(
decoration: BoxDecoration(
image: DecorationImage(
image: widget.product.image,
),
shape: BoxShape.circle,
border: Border.all(
color: model?.idSelected == widget.product.id
? Colors.yellow
: Colors.grey,
width: 5.0,
style: BorderStyle.solid,
),
),
child: GestureDetector(
onTap: () {
model?.idSelected = widget.product.id;
// Route route =
// MaterialPageRoute(builder: (context) => BerryPage(context,));
// Navigator.push(context, route);
if(model?.idSelected == 1){
menuRow.removeAt(2);
Navigator.pop(context);
choice.insert(2, Adds(id: 102, name: 'Холодок', img: 'https://autogear.ru/misc/i/gallery/73434/2759438.jpg'));
}
}),
),
),
And here is the part of parent's widget code, it is inside GestureDetector
else if (index == 2){
setState(() {
});
showModalBottomSheet(
context: context,
isScrollControlled: true,
builder: (BuildContext builder) {
return Container(
height: 250,
child: Column(
children: [
SizedBox(
height: 10,
),Row(
children: [
Padding(
padding: EdgeInsets.only(left: MediaQuery.of(context).size.width*0.25 + MediaQuery.of(context).size.width *0.12),
child: Text(
'Холодок',
style: TextStyle(
fontFamily: 'Newfont',
fontSize: 22,
),
),
),
SizedBox(width: MediaQuery.of(context).size.width*0.25,),
IconButton(icon: Icon(Icons.close),onPressed: (){Navigator.pop(context);},)
],
),
Divider(),
IceBottomSheet(),
],
));
},
);
So when you open the BottomSheet you have to add await before it, so when you call Navigator.pop(context, data_you_want_to_pass_to_parent) it will wait for some data to be returned.
final data = await openBottomSheet();
inside the bottomSheet when you want to close, just pass the the desired data as so
Navigator.pop(context, data_you_want_to_pass_to_parent);