starlight_callback_listview

Description:

starlight callback listview

Starlight Callback ListView #
starlight_callback_listview is a normal widget that contains a scroll listener
and you can do everything that you want to do using that listener.
Features #



Name
Status




All Of Listview Feature
✅


All Of GridView Feature
✅



Installation #
Add starlight_callback_listview as dependency to your pubspec file.
starlight_callback_listview:
git:
url: https://github.com/YeMyoAung/starlight_callback_listview.git
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Setup #
No additional integration steps are required for Android and Ios.
Usage #
First of all you need to import our package.
import 'package:starlight_callback_listview/starlight_callback_listview.dart';
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And then you can use easily.
invokeWhen #
invokeWhen method will give you a percent of the current scroll location. You can easily check out that & do something else.
invokeWhen:(double percent){
///Do Something
}
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StarlightCallbackListView #
StarlightCallbackListView is a normal ListView widget with invokeWhen Method.
StarlightCallbackListView(invokeWhen: invokeWhen, children: [
for (int index = 0; index < 10; index++)
Container(
width: double.infinity,
height: 100,
margin: const EdgeInsets.symmetric(vertical: 10),
color: Colors.green,
alignment: Alignment.center,
child: Text(index.toString()),
)
])
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StarlightCallbackListView.builder #
StarlightCallbackListView.builder is a normal ListView.builder widget with invokeWhen Method.
StarlightCallbackListView.builder(
invokeWhen: invokeWhen,
count: _counter,
builder: (context, index) {
return Container(
width: double.infinity,
height: 100,
margin: const EdgeInsets.symmetric(vertical: 10),
color: Colors.green,
alignment: Alignment.center,
child: Text(index.toString()),
);
},
)
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StarlightCallbackGridView.builder #
StarlightCallbackGridView.builder is a normal GridView.builder widget with invokeWhen Method.
StarlightCallbackGridView.builder(
invokeWhen: invokeWhen,
gridDelegate:
const SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount: 1),
builder: (_, index) => Container(
width: double.infinity,
height: 100,
margin: const EdgeInsets.symmetric(vertical: 10),
color: Colors.green,
alignment: Alignment.center,
child: Text(index.toString()),
),
count: 2,
)
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StarlightCallbackGridView.count #
StarlightCallbackGridView.count is a normal GridView.builder widget with invokeWhen Method.
StarlightCallbackGridView.count(
invokeWhen: invokeWhen,
crossAxisCount: 2,
children: [
for (int index = 0; index < 10; index++)
Container(
width: double.infinity,
height: 100,
margin: const EdgeInsets.symmetric(vertical: 10),
color: Colors.green,
alignment: Alignment.center,
child: Text(index.toString()),
)
])
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StarlightCallbackGridView.extent #
StarlightCallbackGridView.extent is a normal GridView.extent widget with invokeWhen Method.
StarlightCallbackGridView.extent(
invokeWhen: invokeWhen,
maxCrossAxisExtent: 2,
children: [
for (int index = 0; index < 10; index++)
Container(
width: double.infinity,
height: 100,
margin: const EdgeInsets.symmetric(vertical: 10),
color: Colors.green,
alignment: Alignment.center,
child: Text(index.toString()),
)
])
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StarlightCallbackGridView.custom #
StarlightCallbackGridView.custom is a normal GridView.custom widget with invokeWhen Method.
StarlightCallbackGridView.custom(
invokeWhen: invokeWhen,
gridDelegate:
const SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount: 2),
childrenDelegate: SliverChildBuilderDelegate(
(_, index) {
return Container(
width: double.infinity,
height: 100,
margin: const EdgeInsets.symmetric(vertical: 10),
color: Colors.green,
alignment: Alignment.center,
child: Text(index.toString()),
);
},
childCount: 10,
))
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Example #
import 'package:flutter/material.dart';
import 'package:starlight_callback_listview/starlight_callback_listview.dart';

void main() {
runApp(const MyApp());
}

class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);

// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
// This is the theme of your application.
//
// Try running your application with "flutter run". You'll see the
// application has a blue toolbar. Then, without quitting the app, try
// changing the primarySwatch below to Colors.green and then invoke
// "hot reload" (press "r" in the console where you ran "flutter run",
// or simply save your changes to "hot reload" in a Flutter IDE).
// Notice that the counter didn't reset back to zero; the application
// is not restarted.
primarySwatch: Colors.blue,
),
home: const MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}

class MyHomePage extends StatefulWidget {
const MyHomePage({Key? key, required this.title}) : super(key: key);

// This widget is the home page of your application. It is stateful, meaning
// that it has a State object (defined below) that contains fields that affect
// how it looks.

// This class is the configuration for the state. It holds the values (in this
// case the title) provided by the parent (in this case the App widget) and
// used by the build method of the State. Fields in a Widget subclass are
// always marked "final".

final String title;

@override
State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
int _counter = 10;
bool _isLoading = false;

@override
Widget build(BuildContext context) {
// This method is rerun every time setState is called, for instance as done
// by the _incrementCounter method above.
//
// The Flutter framework has been optimized to make rerunning build methods
// fast, so that you can just rebuild anything that needs updating rather
// than having to individually change instances of widgets.
return Scaffold(
appBar: AppBar(
// Here we take the value from the MyHomePage object that was created by
// the App.build method, and use it to set our appbar title.
title: Text(widget.title),
),
body: gridviewCustom(),
// This trailing comma makes auto-formatting nicer for build methods.
);
}

StarlightCallbackGridView gridviewCustom() {
return StarlightCallbackGridView.custom(
invokeWhen: invokeWhen,
gridDelegate:
const SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount: 2),
childrenDelegate: SliverChildBuilderDelegate(
(_, index) {
return Container(
width: double.infinity,
height: 100,
margin: const EdgeInsets.symmetric(vertical: 10),
color: Colors.green,
alignment: Alignment.center,
child: Text(index.toString()),
);
},
childCount: 10,
));
}

StarlightCallbackGridView gridviewExtent() {
return StarlightCallbackGridView.extent(
invokeWhen: invokeWhen,
maxCrossAxisExtent: 2,
children: [
for (int index = 0; index < 10; index++)
Container(
width: double.infinity,
height: 100,
margin: const EdgeInsets.symmetric(vertical: 10),
color: Colors.green,
alignment: Alignment.center,
child: Text(index.toString()),
)
]);
}

StarlightCallbackGridView gridviewCount() {
return StarlightCallbackGridView.count(
invokeWhen: invokeWhen,
crossAxisCount: 2,
children: [
for (int index = 0; index < 10; index++)
Container(
width: double.infinity,
height: 100,
margin: const EdgeInsets.symmetric(vertical: 10),
color: Colors.green,
alignment: Alignment.center,
child: Text(index.toString()),
)
]);
}

StarlightCallbackGridView gridviewbuilder() {
return StarlightCallbackGridView.builder(
invokeWhen: invokeWhen,
gridDelegate:
const SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount: 1),
builder: (_, index) => Container(
width: double.infinity,
height: 100,
margin: const EdgeInsets.symmetric(vertical: 10),
color: Colors.green,
alignment: Alignment.center,
child: Text(index.toString()),
),
count: 2,
);
}

StarlightCallbackListView listview() =>
StarlightCallbackListView(invokeWhen: invokeWhen, children: [
for (int index = 0; index < 10; index++)
Container(
width: double.infinity,
height: 100,
margin: const EdgeInsets.symmetric(vertical: 10),
color: Colors.green,
alignment: Alignment.center,
child: Text(index.toString()),
)
]);

StarlightCallbackListView listviewbuilder() {
return StarlightCallbackListView.builder(
invokeWhen: invokeWhen,
count: _counter,
builder: (context, index) {
return Container(
width: double.infinity,
height: 100,
margin: const EdgeInsets.symmetric(vertical: 10),
color: Colors.green,
alignment: Alignment.center,
child: Text(index.toString()),
);
},
);
}

void invokeWhen(double percent) {
if (_isLoading) return;
if (percent > 80) {
_isLoading = true;
Future.delayed(const Duration(seconds: 3), () {
setState(() {
_counter += 10;
_isLoading = false;
});
});
}
}
}
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Contact Us #
Starlight Studio