I've created a flutter project that show a staggeredgridview of images from firestore database. Once i click on one of the images it shows that image. What i want is a download button thats saves the image to my device. Ath the moment I've just used pop.
I've read some about the path provider package but i can't figure out how to implement this in the code. Perhaps there is a better solution?
StaggeredGridView Page
import 'package:flutter/material.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:flutter_staggered_grid_view/flutter_staggered_grid_view.dart';
import 'package:proj/screens/home/instafull.dart';
import 'dart:async';
import 'package:proj/services/auth.dart';
import 'package:proj/shared/constants.dart';
class Instapage extends StatefulWidget {
@override
_InstapageState createState() => _InstapageState();
}
class _InstapageState extends State<Instapage> {
final AuthService _auth = AuthService();
StreamSubscription<QuerySnapshot> subscription;
List<DocumentSnapshot> wallpaperlist;
final CollectionReference collectionReference = FirebaseFirestore.instance.collection('mediapost');
@override
void initState() {
// TODO: implement initState
super.initState();
subscription = collectionReference.snapshots().listen((datasnapshot) {
setState(() {
wallpaperlist = datasnapshot.docs;
});
});
}
@override
void dispose() {
subscription?.cancel();
// TODO: implement dispose
super.dispose();
}
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: bas,
body: wallpaperlist != null?
StaggeredGridView.countBuilder(
padding: const EdgeInsets.fromLTRB(10, 8, 10, 0),
crossAxisCount: 4,
itemCount: wallpaperlist.length,
itemBuilder: (context, index){
String imgPath = wallpaperlist[index].get('img');
return new Material(
elevation: 8,
borderRadius: BorderRadius.all(Radius.circular(8.0)),
child: InkWell(
onTap: () => Navigator.push(
context,
MaterialPageRoute(
builder: (context) => InstaFull(imgPath: imgPath))),
child: Hero(
tag: imgPath,
child: FadeInImage(
image: NetworkImage(imgPath),
fit: BoxFit.cover,
placeholder: AssetImage('assets/wally2.jpg'),
),
),
),
);
},
staggeredTileBuilder: (index) => StaggeredTile.count(2, index.isEven?2:3),
mainAxisSpacing: 8,
crossAxisSpacing: 8,
): Center(
child: CircularProgressIndicator(),
),
);
}
}
Picture Page
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
class InstaFull extends StatelessWidget {
String imgPath;
InstaFull({this.imgPath});
final LinearGradient backgroundGradient = LinearGradient(
colors: [Color(0x10000000), Color(0x30000000)],
begin: Alignment.topLeft,end: Alignment.bottomRight);
@override
Widget build(BuildContext context) {
return Scaffold(
body: SizedBox.expand(
child: Stack(
children: [
Align(
alignment: Alignment.center,
child: Hero(
tag: imgPath,
child: Image.network(imgPath),
),
),
Align(
alignment: Alignment.topCenter,
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
AppBar(
elevation: 0,
backgroundColor: Colors.transparent,
leading: IconButton(
icon: Icon(Icons.close,
color: Colors.black,
),
onPressed: () => Navigator.of(context).pop(),
),
),
],
),
),
Align(
alignment: Alignment.bottomCenter,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
TextButton(
onPressed: () => Navigator.of(context).pop(),
child: Text('Download')),
],),
)
],
),
),
);
}
}