Originaler README-Schnappschuss aus dem verknüpften Quell-Repository. Aktuelle Inhalte finden Sie im Repository.
page_view_indicators
Customizable indicators for your PageViews:
-
CirclePageIndicator with following customizations:
- size
- selectedSize
- dotColor
- selectedDotColor
- dotSpacing
- borderWidth
- borderColor
- selectedBorderColor
-
ArrowPageIndicator with following customization:
- rightIcon
- leftIcon
- iconColor
- iconPadding
- duration
- curve
- isJump
- isInside
- iconSize
- tooltipLeft
- tooltipRight
-
LinearProgressPageIndicator
- width
- height
- duration
- progressColor
- backgroundColor
-
StepPageIndicator
- selectedStep
- previousStep
- nextStep
- stepColor
- stepSpacing
- size
-
AnimatedCirclePageIndicator
-
Others are coming soon!
Example:
CirclePageIndicator
import 'package:flutter/material.dart';
import 'package:page_view_indicators/circle_page_indicator.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'PageViewIndicators Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
routes: {
'/': (context) => HomePage(),
},
);
}
}
class HomePage extends StatefulWidget {
@override
HomePageState createState() {
return new HomePageState();
}
}
class HomePageState extends State<HomePage> {
final _items = [
Colors.blue,
Colors.orange,
Colors.green,
Colors.pink,
Colors.red,
Colors.amber,
Colors.brown,
Colors.yellow,
Colors.blue,
];
final _pageController = PageController();
final _currentPageNotifier = ValueNotifier<int>(0);
final _boxHeight = 150.0;
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('CirclePageIndicator Demo'),
),
body: _buildBody(),
);
}
_buildBody() {
return Column(
children: <Widget>[
Stack(
children: <Widget>[
_buildPageView(),
_buildCircleIndicator(),
],
),
Expanded(
child: ListView(
children: <Widget>[
Text('size: 12.0, selectedSize: 16.0'),
_buildCircleIndicator2(),
Text('selectedDotColor: Colors.green'),
_buildCircleIndicator3(),
Text('dotColor: Colors.red'),
_buildCircleIndicator4(),
Text('selectedDotColor:Colors.blue, dotColor: Colors.black'),
_buildCircleIndicator5(),
Text('dotSpacing: 30.0'),
_buildCircleIndicator6(),
Text('wrap is fun'),
_buildCircleIndicator7(),
]
.map((item) => Padding(
child: item,
padding: EdgeInsets.all(8.0),
))
.toList(),
),
),
],
);
}
_buildPageView() {
return Container(
color: Colors.black87,
height: _boxHeight,
child: PageView.builder(
itemCount: _items.length,
controller: _pageController,
itemBuilder: (BuildContext context, int index) {
return Center(
child: FlutterLogo(
colors: _items[index],
size: 50.0,
),
);
},
onPageChanged: (int index) {
_currentPageNotifier.value = index;
}),
);
}
_buildCircleIndicator() {
return Positioned(
left: 0.0,
right: 0.0,
bottom: 0.0,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: CirclePageIndicator(
itemCount: _items.length,
currentPageNotifier: _currentPageNotifier,
),
),
);
}
_buildCircleIndicator2() {
return CirclePageIndicator(
size: 16.0,
selectedSize: 18.0,
itemCount: _items.length,
currentPageNotifier: _currentPageNotifier,
);
}
_buildCircleIndicator3() {
return CirclePageIndicator(
selectedDotColor: Colors.green,
itemCount: _items.length,
currentPageNotifier: _currentPageNotifier,
);
}
_buildCircleIndicator4() {
return CirclePageIndicator(
dotColor: Colors.red,
itemCount: _items.length,
currentPageNotifier: _currentPageNotifier,
);
}
_buildCircleIndicator5() {
return CirclePageIndicator(
dotColor: Colors.black,
selectedDotColor: Colors.blue,
itemCount: _items.length,
currentPageNotifier: _currentPageNotifier,
);
}
_buildCircleIndicator6() {
return CirclePageIndicator(
dotSpacing: 30.0,
itemCount: _items.length,
currentPageNotifier: _currentPageNotifier,
);
}
_buildCircleIndicator7() {
return CirclePageIndicator(
size: 50.0,
selectedSize: 75.0,
itemCount: _items.length,
currentPageNotifier: _currentPageNotifier,
);
}
}
ArrowPageIndicator
import 'package:flutter/material.dart';
import 'package:page_view_indicators/arrow_page_indicator.dart';
class ArrowPageIndicatorDemo extends StatefulWidget {
@override
ArrowPageIndicatorDemoState createState() {
return new ArrowPageIndicatorDemoState();
}
}
class ArrowPageIndicatorDemoState extends State<ArrowPageIndicatorDemo> {
final _items = [
Colors.blue,
Colors.orange,
Colors.green,
Colors.pink,
];
final _pageController = PageController();
final _pageController2 = PageController();
final _currentPageNotifier = ValueNotifier<int>(0);
final _currentPageNotifier2 = ValueNotifier<int>(0);
final _boxHeight = 150.0;
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('ArrowPageIndicator Demo'),
),
body: _buildBody(),
);
}
_buildBody() => ListView(
padding: EdgeInsets.all(8.0),
children: <Widget>[
Text('isInside:false [Arrows in row], isJump: true'),
ArrowPageIndicator(
isJump: true,
pageController: _pageController,
currentPageNotifier: _currentPageNotifier,
itemCount: _items.length,
child: _buildPageView(_pageController, _currentPageNotifier),
),
Text('isInside:true [Arrows in stack], isJump:false, custom icons'),
ArrowPageIndicator(
iconPadding: EdgeInsets.symmetric(horizontal: 16.0),
isInside: true,
leftIcon: Image.asset(
"assets/images/left_arrow.png",
width: 46.0,
height: 46.0,
),
rightIcon: Image.asset(
"assets/images/right_arrow.png",
width: 46.0,
height: 46.0,
),
pageController: _pageController2,
currentPageNotifier: _currentPageNotifier2,
itemCount: _items.length,
child: _buildPageView(_pageController2, _currentPageNotifier2),
),
]
.map((item) => Padding(
child: item,
padding: EdgeInsets.symmetric(vertical: 16.0),
))
.toList(),
);
_buildPageView(
PageController pageController, ValueNotifier currentPageNotifier) =>
Container(
color: Colors.black,
height: _boxHeight,
child: PageView.builder(
itemCount: _items.length,
controller: pageController,
itemBuilder: (BuildContext context, int index) {
return Center(
child: FlutterLogo(
colors: _items[index],
size: 75.0,
),
);
},
onPageChanged: (int index) {
currentPageNotifier.value = index;
}),
);
}
LinearProgressPageIndicator
class LinearProgressPageIndicatorDemo extends StatefulWidget {
@override
_LinearProgressPageIndicatorDemoState createState() {
return _LinearProgressPageIndicatorDemoState();
}
}
class _LinearProgressPageIndicatorDemoState
extends State<LinearProgressPageIndicatorDemo> {
final _items = [
Colors.blue,
Colors.orange,
Colors.green,
Colors.pink,
Colors.red,
Colors.amber,
Colors.brown,
Colors.yellow,
Colors.blue,
];
final _pageController = PageController();
final _currentPageNotifier = ValueNotifier<int>(0);
final _boxHeight = 300.0;
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('LinearProgressPageIndicator Demo'),
),
body: _buildBody(),
);
}
_buildBody() {
return Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
_buildPageView(),
_buildLinearProgressIndicator(),
],
);
}
_buildPageView() {
return Container(
color: Colors.black87,
height: _boxHeight,
child: PageView.builder(
itemCount: _items.length,
controller: _pageController,
itemBuilder: (BuildContext context, int index) {
return Center(
child: FlutterLogo(
colors: _items[index],
size: 50.0,
),
);
},
onPageChanged: (int index) {
_currentPageNotifier.value = index;
}),
);
}
_buildLinearProgressIndicator() {
return LayoutBuilder(
builder: (BuildContext context, BoxConstraints constraints) =>
LinearProgressPageIndicator(
itemCount: _items.length,
currentPageNotifier: _currentPageNotifier,
progressColor: Colors.green,
width: constraints.maxWidth,
height: 30,
),
);
}
}
StepPageIndicator
class _StepPageIndicatorDemoState extends State<StepPageIndicatorDemo> {
final _pageController = PageController();
final _currentPageNotifier = ValueNotifier<int>(0);
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('StepPageIndicator Demo'),
),
body: _buildBody(),
);
}
_buildBody() {
return Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
_buildStepIndicator(),
_buildPageView(),
],
);
}
_buildPageView() {
return Expanded(
child: PageView.builder(
itemCount: 8,
controller: _pageController,
itemBuilder: (BuildContext context, int index) {
return Center(
child: Text(
'Step ${index + 1}',
style: Theme.of(context).textTheme.display1,
),
);
},
onPageChanged: (int index) {
_currentPageNotifier.value = index;
},
),
);
}
_buildStepIndicator() {
return Container(
color: Colors.black,
padding: const EdgeInsets.all(16.0),
child: StepPageIndicator(
itemCount: 8,
currentPageNotifier: _currentPageNotifier,
size: 16,
onPageSelected: (int index) {
if (_currentPageNotifier.value > index)
_pageController.jumpToPage(index);
},
),
);
}
}
If you want to give an initial index, pass the same initial value to
PageController's initial value and currentPageNotifier's value.
final _pageController = PageController(initialValue:3);
final _currentPageNotifier = ValueNotifier<int>(3);
Credits
Left Icon
Right icon
