How to make the Collapsable AppBar scroll as well while using the GridView Scroll in Flutter ?
0
I need my Collapsable AppBar to scroll when I am scrolling in my GridView ? I would like to achieve this without deactivating my GridView scroll-controller as I require it for infinite scroll implementation later on.
The below code has a Collapsable AppBar and A GridView of Cards inside it. Since my GridView has a height nearly as that of the entire page, once I start scrolling - my collapsable AppBar stops scrolling and only my GridView Elements scroll within the GridView. This looks ugly as the AppBar stops half way through before it completely collapses.
import 'package:flutter/material.dart';
_MockPageState mockPageState = new _MockPageState();
class MockPage extends StatefulWidget {
MockPage({
Key key,
}) : super(key: key);
@override
_MockPageState createState() => new _MockPageState();
}
class _MockPageState extends State<MockPage> {
@override
void initState() {
super.initState();
}
Widget displayCards(index){
return new Card(
elevation: 6.0,
child: new Container(
color: Colors.blue,
child: new Center(
child: new Container(
padding: const EdgeInsets.all(2.0),
child: new Text(
"This cards is a widget of the GridView",
style: TextStyle(
color: Colors.black,
fontSize: 13.0,
fontStyle: FontStyle.normal,
),
textAlign: TextAlign.justify,
maxLines: 3,
overflow: TextOverflow.ellipsis,
),
),
),
)
);
}
Widget displayDetails()
{
double screenheight = MediaQuery.of(context).size.height;
var orientation = MediaQuery.of(context).orientation;
return new Container(
color: Colors.greenAccent,
padding: const EdgeInsets.all(5.0),
height: screenheight - 30.0,
child: new GridView.builder(
physics: new NeverScrollableScrollPhysics(),
shrinkWrap: true,
primary: true,
gridDelegate: new SliverGridDelegateWithFixedCrossAxisCount(
childAspectRatio: 1.0,
mainAxisSpacing: 10.0,
crossAxisSpacing: 10.0,
crossAxisCount: (orientation == Orientation.portrait) ? 3 : 3,
),
padding: const EdgeInsets.all(20.0),
itemCount: 20,
scrollDirection: Axis.vertical,
itemBuilder: (BuildContext context, int index) {
return new GridTile(
child: displayCards(index),
);
},
),
);
}
Widget heroBackground(){
double screenWidth = MediaQuery.of(context).size.width;
double screenheight = MediaQuery.of(context).size.height;
return new Container(
color: Colors.yellow,
child: new Container(
width: screenWidth,
height: screenheight * 0.6,
decoration: new BoxDecoration(color: Colors.yellow,),
child: new Stack(
children: <Widget>[
new Positioned.fill(
child: new Container(
color: Colors.yellow,
),
),
],
),
),
);
}
Widget collapsingAppBar(){
var screenheight = MediaQuery.of(context).size.height;
return new SliverAppBar(
leading: IconButton(icon:Icon(Icons.arrow_back, color: Colors.black,),onPressed:() => Navigator.pop(context)),
title: new Text(
"Collapsable App Bar (Yellow)",
style: TextStyle(
color: Colors.black,
fontSize: 16.0,
fontStyle: FontStyle.normal
),
maxLines: 1,
overflow: TextOverflow.ellipsis,
),
expandedHeight: screenheight * 0.60,
floating: false,
pinned: true,
backgroundColor: Colors.white,
flexibleSpace: FlexibleSpaceBar(
centerTitle: true,
background: heroBackground(),
),
);
}
@override
Widget build(BuildContext context) {
return new Scaffold(
resizeToAvoidBottomPadding: false,
body: new NestedScrollView(
headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) {
return <Widget>[
collapsingAppBar(),
];
},
body: new Container(
color: Colors.white,
child : new SingleChildScrollView(
child: new ConstrainedBox(
constraints: new BoxConstraints(),
child : displayDetails(),
),
),
),
),
);
}
}
scroll dart
flutter asked Nov 23 '18 at 9:08
Keshav Aditya R.PKeshav Aditya R.P
7121515
add a comment |
0
I need my Collapsable AppBar to scroll when I am scrolling in my GridView ? I would like to achieve this without deactivating my GridView scroll-controller as I require it for infinite scroll implementation later on.
The below code has a Collapsable AppBar and A GridView of Cards inside it. Since my GridView has a height nearly as that of the entire page, once I start scrolling - my collapsable AppBar stops scrolling and only my GridView Elements scroll within the GridView. This looks ugly as the AppBar stops half way through before it completely collapses.
import 'package:flutter/material.dart';
_MockPageState mockPageState = new _MockPageState();
class MockPage extends StatefulWidget {
MockPage({
Key key,
}) : super(key: key);
@override
_MockPageState createState() => new _MockPageState();
}
class _MockPageState extends State<MockPage> {
@override
void initState() {
super.initState();
}
Widget displayCards(index){
return new Card(
elevation: 6.0,
child: new Container(
color: Colors.blue,
child: new Center(
child: new Container(
padding: const EdgeInsets.all(2.0),
child: new Text(
"This cards is a widget of the GridView",
style: TextStyle(
color: Colors.black,
fontSize: 13.0,
fontStyle: FontStyle.normal,
),
textAlign: TextAlign.justify,
maxLines: 3,
overflow: TextOverflow.ellipsis,
),
),
),
)
);
}
Widget displayDetails()
{
double screenheight = MediaQuery.of(context).size.height;
var orientation = MediaQuery.of(context).orientation;
return new Container(
color: Colors.greenAccent,
padding: const EdgeInsets.all(5.0),
height: screenheight - 30.0,
child: new GridView.builder(
physics: new NeverScrollableScrollPhysics(),
shrinkWrap: true,
primary: true,
gridDelegate: new SliverGridDelegateWithFixedCrossAxisCount(
childAspectRatio: 1.0,
mainAxisSpacing: 10.0,
crossAxisSpacing: 10.0,
crossAxisCount: (orientation == Orientation.portrait) ? 3 : 3,
),
padding: const EdgeInsets.all(20.0),
itemCount: 20,
scrollDirection: Axis.vertical,
itemBuilder: (BuildContext context, int index) {
return new GridTile(
child: displayCards(index),
);
},
),
);
}
Widget heroBackground(){
double screenWidth = MediaQuery.of(context).size.width;
double screenheight = MediaQuery.of(context).size.height;
return new Container(
color: Colors.yellow,
child: new Container(
width: screenWidth,
height: screenheight * 0.6,
decoration: new BoxDecoration(color: Colors.yellow,),
child: new Stack(
children: <Widget>[
new Positioned.fill(
child: new Container(
color: Colors.yellow,
),
),
],
),
),
);
}
Widget collapsingAppBar(){
var screenheight = MediaQuery.of(context).size.height;
return new SliverAppBar(
leading: IconButton(icon:Icon(Icons.arrow_back, color: Colors.black,),onPressed:() => Navigator.pop(context)),
title: new Text(
"Collapsable App Bar (Yellow)",
style: TextStyle(
color: Colors.black,
fontSize: 16.0,
fontStyle: FontStyle.normal
),
maxLines: 1,
overflow: TextOverflow.ellipsis,
),
expandedHeight: screenheight * 0.60,
floating: false,
pinned: true,
backgroundColor: Colors.white,
flexibleSpace: FlexibleSpaceBar(
centerTitle: true,
background: heroBackground(),
),
);
}
@override
Widget build(BuildContext context) {
return new Scaffold(
resizeToAvoidBottomPadding: false,
body: new NestedScrollView(
headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) {
return <Widget>[
collapsingAppBar(),
];
},
body: new Container(
color: Colors.white,
child : new SingleChildScrollView(
child: new ConstrainedBox(
constraints: new BoxConstraints(),
child : displayDetails(),
),
),
),
),
);
}
}
scroll dart
flutter asked Nov 23 '18 at 9:08
Keshav Aditya R.PKeshav Aditya R.P
7121515
add a comment |
0
0
0
I need my Collapsable AppBar to scroll when I am scrolling in my GridView ? I would like to achieve this without deactivating my GridView scroll-controller as I require it for infinite scroll implementation later on.
The below code has a Collapsable AppBar and A GridView of Cards inside it. Since my GridView has a height nearly as that of the entire page, once I start scrolling - my collapsable AppBar stops scrolling and only my GridView Elements scroll within the GridView. This looks ugly as the AppBar stops half way through before it completely collapses.
import 'package:flutter/material.dart';
_MockPageState mockPageState = new _MockPageState();
class MockPage extends StatefulWidget {
MockPage({
Key key,
}) : super(key: key);
@override
_MockPageState createState() => new _MockPageState();
}
class _MockPageState extends State<MockPage> {
@override
void initState() {
super.initState();
}
Widget displayCards(index){
return new Card(
elevation: 6.0,
child: new Container(
color: Colors.blue,
child: new Center(
child: new Container(
padding: const EdgeInsets.all(2.0),
child: new Text(
"This cards is a widget of the GridView",
style: TextStyle(
color: Colors.black,
fontSize: 13.0,
fontStyle: FontStyle.normal,
),
textAlign: TextAlign.justify,
maxLines: 3,
overflow: TextOverflow.ellipsis,
),
),
),
)
);
}
Widget displayDetails()
{
double screenheight = MediaQuery.of(context).size.height;
var orientation = MediaQuery.of(context).orientation;
return new Container(
color: Colors.greenAccent,
padding: const EdgeInsets.all(5.0),
height: screenheight - 30.0,
child: new GridView.builder(
physics: new NeverScrollableScrollPhysics(),
shrinkWrap: true,
primary: true,
gridDelegate: new SliverGridDelegateWithFixedCrossAxisCount(
childAspectRatio: 1.0,
mainAxisSpacing: 10.0,
crossAxisSpacing: 10.0,
crossAxisCount: (orientation == Orientation.portrait) ? 3 : 3,
),
padding: const EdgeInsets.all(20.0),
itemCount: 20,
scrollDirection: Axis.vertical,
itemBuilder: (BuildContext context, int index) {
return new GridTile(
child: displayCards(index),
);
},
),
);
}
Widget heroBackground(){
double screenWidth = MediaQuery.of(context).size.width;
double screenheight = MediaQuery.of(context).size.height;
return new Container(
color: Colors.yellow,
child: new Container(
width: screenWidth,
height: screenheight * 0.6,
decoration: new BoxDecoration(color: Colors.yellow,),
child: new Stack(
children: <Widget>[
new Positioned.fill(
child: new Container(
color: Colors.yellow,
),
),
],
),
),
);
}
Widget collapsingAppBar(){
var screenheight = MediaQuery.of(context).size.height;
return new SliverAppBar(
leading: IconButton(icon:Icon(Icons.arrow_back, color: Colors.black,),onPressed:() => Navigator.pop(context)),
title: new Text(
"Collapsable App Bar (Yellow)",
style: TextStyle(
color: Colors.black,
fontSize: 16.0,
fontStyle: FontStyle.normal
),
maxLines: 1,
overflow: TextOverflow.ellipsis,
),
expandedHeight: screenheight * 0.60,
floating: false,
pinned: true,
backgroundColor: Colors.white,
flexibleSpace: FlexibleSpaceBar(
centerTitle: true,
background: heroBackground(),
),
);
}
@override
Widget build(BuildContext context) {
return new Scaffold(
resizeToAvoidBottomPadding: false,
body: new NestedScrollView(
headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) {
return <Widget>[
collapsingAppBar(),
];
},
body: new Container(
color: Colors.white,
child : new SingleChildScrollView(
child: new ConstrainedBox(
constraints: new BoxConstraints(),
child : displayDetails(),
),
),
),
),
);
}
}
scroll dart
flutter asked Nov 23 '18 at 9:08
Keshav Aditya R.PKeshav Aditya R.P
7121515
I need my Collapsable AppBar to scroll when I am scrolling in my GridView ? I would like to achieve this without deactivating my GridView scroll-controller as I require it for infinite scroll implementation later on.
The below code has a Collapsable AppBar and A GridView of Cards inside it. Since my GridView has a height nearly as that of the entire page, once I start scrolling - my collapsable AppBar stops scrolling and only my GridView Elements scroll within the GridView. This looks ugly as the AppBar stops half way through before it completely collapses.
import 'package:flutter/material.dart';
_MockPageState mockPageState = new _MockPageState();
class MockPage extends StatefulWidget {
MockPage({
Key key,
}) : super(key: key);
@override
_MockPageState createState() => new _MockPageState();
}
class _MockPageState extends State<MockPage> {
@override
void initState() {
super.initState();
}
Widget displayCards(index){
return new Card(
elevation: 6.0,
child: new Container(
color: Colors.blue,
child: new Center(
child: new Container(
padding: const EdgeInsets.all(2.0),
child: new Text(
"This cards is a widget of the GridView",
style: TextStyle(
color: Colors.black,
fontSize: 13.0,
fontStyle: FontStyle.normal,
),
textAlign: TextAlign.justify,
maxLines: 3,
overflow: TextOverflow.ellipsis,
),
),
),
)
);
}
Widget displayDetails()
{
double screenheight = MediaQuery.of(context).size.height;
var orientation = MediaQuery.of(context).orientation;
return new Container(
color: Colors.greenAccent,
padding: const EdgeInsets.all(5.0),
height: screenheight - 30.0,
child: new GridView.builder(
physics: new NeverScrollableScrollPhysics(),
shrinkWrap: true,
primary: true,
gridDelegate: new SliverGridDelegateWithFixedCrossAxisCount(
childAspectRatio: 1.0,
mainAxisSpacing: 10.0,
crossAxisSpacing: 10.0,
crossAxisCount: (orientation == Orientation.portrait) ? 3 : 3,
),
padding: const EdgeInsets.all(20.0),
itemCount: 20,
scrollDirection: Axis.vertical,
itemBuilder: (BuildContext context, int index) {
return new GridTile(
child: displayCards(index),
);
},
),
);
}
Widget heroBackground(){
double screenWidth = MediaQuery.of(context).size.width;
double screenheight = MediaQuery.of(context).size.height;
return new Container(
color: Colors.yellow,
child: new Container(
width: screenWidth,
height: screenheight * 0.6,
decoration: new BoxDecoration(color: Colors.yellow,),
child: new Stack(
children: <Widget>[
new Positioned.fill(
child: new Container(
color: Colors.yellow,
),
),
],
),
),
);
}
Widget collapsingAppBar(){
var screenheight = MediaQuery.of(context).size.height;
return new SliverAppBar(
leading: IconButton(icon:Icon(Icons.arrow_back, color: Colors.black,),onPressed:() => Navigator.pop(context)),
title: new Text(
"Collapsable App Bar (Yellow)",
style: TextStyle(
color: Colors.black,
fontSize: 16.0,
fontStyle: FontStyle.normal
),
maxLines: 1,
overflow: TextOverflow.ellipsis,
),
expandedHeight: screenheight * 0.60,
floating: false,
pinned: true,
backgroundColor: Colors.white,
flexibleSpace: FlexibleSpaceBar(
centerTitle: true,
background: heroBackground(),
),
);
}
@override
Widget build(BuildContext context) {
return new Scaffold(
resizeToAvoidBottomPadding: false,
body: new NestedScrollView(
headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) {
return <Widget>[
collapsingAppBar(),
];
},
body: new Container(
color: Colors.white,
child : new SingleChildScrollView(
child: new ConstrainedBox(
constraints: new BoxConstraints(),
child : displayDetails(),
),
),
),
),
);
}
}
scroll dart
flutter scroll dart
flutter asked Nov 23 '18 at 9:08
Keshav Aditya R.PKeshav Aditya R.P
7121515
asked Nov 23 '18 at 9:08
Keshav Aditya R.PKeshav Aditya R.P
7121515
asked Nov 23 '18 at 9:08
Keshav Aditya R.PKeshav Aditya R.P
7121515
asked Nov 23 '18 at 9:08
Keshav Aditya R.PKeshav Aditya R.P
7121515
asked Nov 23 '18 at 9:08
Keshav Aditya R.PKeshav Aditya R.P
7121515
7121515
add a comment |
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53443568%2fhow-to-make-the-collapsable-appbar-scroll-as-well-while-using-the-gridview-scrol%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
draft saved
draft discarded
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53443568%2fhow-to-make-the-collapsable-appbar-scroll-as-well-while-using-the-gridview-scrol%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
