image_downloader 0.19.0 image_downloader: ^0.19.0 copied to clipboard
Flutter plugin that downloads images on the Internet and saves them on device.
import 'dart:async';
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:image_downloader/image_downloader.dart';
void main() => runApp(MyApp());
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
String _message = "";
String _path = "";
String _size = "";
String _mimeType = "";
File _imageFile;
int _progress = 0;
List<File> _mulitpleFiles = [];
@override
void initState() {
super.initState();
ImageDownloader.callback(onProgressUpdate: (String imageId, int progress) {
setState(() {
_progress = progress;
});
});
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Plugin example app'),
),
body: Center(
child: SingleChildScrollView(
child: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Text('Progress: $_progress %'),
Text(_message),
Text(_size),
Text(_mimeType),
Text(_path),
_path == ""
? Container()
: Builder(
builder: (context) => RaisedButton(
onPressed: () async {
await ImageDownloader.open(_path).catchError((error) {
Scaffold.of(context).showSnackBar(SnackBar(
content: Text((error as PlatformException).message),
));
});
},
child: Text("Open"),
),
),
RaisedButton(
onPressed: () {
ImageDownloader.cancel();
},
child: Text("Cancel"),
),
RaisedButton(
onPressed: () {
_downloadImage("https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/bigsize.jpg");
},
child: Text("default destination"),
),
RaisedButton(
onPressed: () {
_downloadImage(
"https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/flutter.png",
destination: AndroidDestinationType.directoryPictures
..inExternalFilesDir()
..subDirectory("sample.gif"),
);
},
child: Text("custom destination(only android)"),
),
RaisedButton(
onPressed: () {
_downloadImage("https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/flutter_no.png", whenError: true);
},
child: Text("404 error"),
),
RaisedButton(
onPressed: () {
_downloadImage("https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/sample.mkv", whenError: true);
//_downloadImage("https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/sample.3gp");
},
child: Text("unsupported file error(only ios)"),
),
RaisedButton(
onPressed: () {
//_downloadImage("https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/sample.mp4");
//_downloadImage("https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/sample.m4v");
_downloadImage("https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/sample.mov");
},
child: Text("movie"),
),
RaisedButton(
onPressed: () async {
var list = [
"https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/bigsize.jpg",
"https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/flutter.jpg",
"https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/sample.HEIC",
"https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/flutter_transparent.png",
"https://raw.githubusercontent.com/wiki/ko2ic/flutter_google_ad_manager/images/sample.gif",
"https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/flutter_no.png",
"https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/flutter.png",
"https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/flutter_real_png.jpg",
"https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/bigsize.jpg",
"https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/flutter.jpg",
"https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/flutter_transparent.png",
"https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/flutter_no.png",
"https://raw.githubusercontent.com/wiki/ko2ic/flutter_google_ad_manager/images/sample.gif",
"https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/flutter.png",
"https://raw.githubusercontent.com/wiki/ko2ic/image_downloader/images/flutter_real_png.jpg",
];
List<File> files = [];
for (var url in list) {
try {
var imageId = await ImageDownloader.downloadImage(url);
var path = await ImageDownloader.findPath(imageId);
files.add(File(path));
} catch (error) {
print(error);
}
}
setState(() {
_mulitpleFiles.addAll(files);
});
},
child: Text("multiple downlod"),
),
(_imageFile == null) ? Container() : Image.file(_imageFile),
GridView.count(
crossAxisCount: 4,
shrinkWrap: true,
physics: BouncingScrollPhysics(),
children: List.generate(_mulitpleFiles.length, (index) {
return SizedBox(
width: 50,
height: 50,
child: Image.file(File(_mulitpleFiles[index].path)),
);
}),
),
],
),
),
),
),
);
}
Future<void> _downloadImage(String url, {AndroidDestinationType destination, bool whenError = false}) async {
String fileName;
String path;
int size;
String mimeType;
try {
String imageId;
if (whenError) {
imageId = await ImageDownloader.downloadImage(url).catchError((error) {
if (error is PlatformException) {
var path = "";
if (error.code == "404") {
print("Not Found Error.");
} else if (error.code == "unsupported_file") {
print("UnSupported FIle Error.");
path = error.details["unsupported_file_path"];
}
setState(() {
_message = error.toString();
_path = path;
});
}
print(error);
}).timeout(Duration(seconds: 10), onTimeout: () {
print("timeout");
});
} else {
if (destination == null) {
imageId = await ImageDownloader.downloadImage(url);
} else {
imageId = await ImageDownloader.downloadImage(
url,
destination: destination,
);
}
}
if (imageId == null) {
return;
}
fileName = await ImageDownloader.findName(imageId);
path = await ImageDownloader.findPath(imageId);
size = await ImageDownloader.findByteSize(imageId);
mimeType = await ImageDownloader.findMimeType(imageId);
} on PlatformException catch (error) {
setState(() {
_message = error.message;
});
return;
}
if (!mounted) return;
setState(() {
var location = Platform.isAndroid ? "Directory" : "Photo Library";
_message = 'Saved as "$fileName" in $location.\n';
_size = 'size: $size';
_mimeType = 'mimeType: $mimeType';
_path = path;
if (!_mimeType.contains("video")) {
_imageFile = File(path);
}
});
}
}