Created
March 5, 2021 04:01
-
-
Save Sofianel5/3b29e15024b902f6f04ce2f84598171c to your computer and use it in GitHub Desktop.
Flutter NetworkImage memory issue
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import 'dart:math'; | |
import 'package:flutter/material.dart'; | |
import 'package:flutter_staggered_grid_view/flutter_staggered_grid_view.dart'; | |
void main() { | |
runApp(MyApp()); | |
} | |
class MyApp extends StatelessWidget { | |
// This widget is the root of your application. | |
@override | |
Widget build(BuildContext context) { | |
return MaterialApp( | |
title: 'Flutter Memory Issue', | |
theme: ThemeData( | |
primarySwatch: Colors.blue, | |
), | |
home: MyHomePage( | |
title: 'Flutter Demo Home Page', | |
imageUrl: "https://picsum.photos/", | |
), | |
); | |
} | |
} | |
class GalleryImage extends StatelessWidget { | |
final String url; | |
final int height; | |
final int width; | |
GalleryImage(this.url, this.height, this.width); | |
@override | |
Widget build(BuildContext context) { | |
return Container( | |
width: (MediaQuery.of(context).size.width / 3), | |
height: height * (MediaQuery.of(context).size.width / 3) / width, | |
decoration: BoxDecoration( | |
image: DecorationImage( | |
image: NetworkImage( | |
url, | |
), | |
fit: BoxFit.cover, | |
), | |
), | |
); | |
} | |
} | |
class MyHomePage extends StatefulWidget { | |
MyHomePage( | |
{Key key, this.title, this.imageUrl}) | |
: super(key: key); | |
final String imageUrl; | |
final String title; | |
@override | |
_MyHomePageState createState() => _MyHomePageState(); | |
} | |
class _MyHomePageState extends State<MyHomePage> { | |
static var _random = new Random(); | |
@override | |
Widget build(BuildContext context) { | |
return Scaffold( | |
appBar: AppBar( | |
title: Text(widget.title), | |
), | |
body: Center( | |
child: Column( | |
mainAxisAlignment: MainAxisAlignment.center, | |
children: <Widget>[ | |
Expanded( | |
child: CustomScrollView( | |
slivers: <Widget>[ | |
SliverStaggeredGrid.countBuilder( | |
crossAxisCount: 3, | |
itemCount: 100, | |
itemBuilder: (BuildContext context, int index) { | |
int width = 100 + _random.nextInt(1800); | |
return GestureDetector( | |
onTap: () { | |
Navigator.push( | |
context, | |
MaterialPageRoute( | |
builder: (BuildContext context) => MyHomePage( | |
title: 'Flutter Demo Home Page', | |
imageUrl: widget.imageUrl, | |
))); | |
}, | |
child: GalleryImage(widget.imageUrl + width.toString(), width, | |
width), | |
); | |
}, | |
staggeredTileBuilder: (int index) => StaggeredTile.fit(1), | |
mainAxisSpacing: 0, | |
crossAxisSpacing: 0, | |
), | |
], | |
), | |
), | |
], | |
), | |
), | |
); | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment