download and save image to file in Flutter
“One of the simplest activities that any application can perform is saving an image that has been downloaded from the Internet in the filesystem“
Hi guyz i hope you all are well so in this article we learn how to save url image into our local device like phone. Beginning with the assumption that we already know the URL of an image, we will download it first before saving it in the gallery or to a specified location.
don’t waste your time go to the code in to do this task we will use the following dependencies:
Step 1: Create a basic layout:
Now we are going to create a very basic layout that displays an image from URL:
import 'package:flutter/material.dart';
void main() {
runApp(const App());
}
class App extends StatelessWidget {
const App({super.key});
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Save image to disk',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: const MainScreen(),
);
}
}
class MainScreen extends StatelessWidget {
static const _url = 'https://dosomthings.com/wp-content/uploads/2022/07/dc0a7e44e96647848177c8afd4bdabdd.png';
const MainScreen({super.key});
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('Save image to disk'),
centerTitle: true,
backgroundColor: Color(0xFFe91e63),
actions: [
IconButton(
onPressed: () {
// We will add this method later
},
icon: const Icon(Icons.save,color: Colors.white,),
),
],
),
body: Center(
child: Container(
padding: const EdgeInsets.only(
left: 24.0,
right: 24.0,
),
child: ClipRRect(
borderRadius: BorderRadius.circular(30.0),
child: Image.network(_url),
),
),
),
);
}
}Step 2: Give permission and set Configuration in android for Download and save image:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.saveimage">
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application>and we upgrade to versions compileSdkVersion & minSdkVersion
android {
//HERE..
compileSdkVersion 33
ndkVersion flutter.ndkVersion
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
} defaultConfig {
// TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
applicationId "com.example.saveimage"
//HERE...
minSdkVersion 19
targetSdkVersion flutter.targetSdkVersion
versionCode flutterVersionCode.toInteger()
versionName flutterVersionName
}Step 3: Download and save image from the URL to a file:
import 'dart:math';
import 'package:flutter/material.dart';
import 'dart:io';
import 'package:flutter_file_dialog/flutter_file_dialog.dart';
import 'package:http/http.dart' as http;
import 'package:path_provider/path_provider.dart';
void main() {
runApp(const App());
}
class App extends StatelessWidget {
const App({super.key});
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Save image to disk',
home: MainScreen(),
);
}
}
class MainScreen extends StatelessWidget {
static const _url = 'https://dosomthings.com/wp-content/uploads/2023/07/How-to-download-and-save-image-to-file-in-FlutterDosomthings.com_-1024x576.png';
var random = Random();
Future<void> _saveImage(BuildContext context) async {
final scaffoldMessenger = ScaffoldMessenger.of(context);
late String message;
try {
// Download image
final http.Response response = await http.get(
Uri.parse(_url));
// Get temporary directory
final dir = await getTemporaryDirectory();
// Create an image name
var filename = '${dir.path}/SaveImage${random.nextInt(100)}.png';
// Save to filesystem
final file = File(filename);
await file.writeAsBytes(response.bodyBytes);
// Ask the user to save it
final params = SaveFileDialogParams(sourceFilePath: file.path);
final finalPath = await FlutterFileDialog.saveFile(params: params);
if (finalPath != null) {
message = 'Image saved to disk';
}
} catch (e) {
message = e.toString();
scaffoldMessenger.showSnackBar(SnackBar(
content: Text(
message,
style: TextStyle(
fontSize: 12,
color: Colors.white,
fontWeight: FontWeight.bold,
),
),
backgroundColor: Color(0xFFe91e63),
));
}
if (message != null) {
scaffoldMessenger.showSnackBar(SnackBar(
content: Text(
message,
style: TextStyle(
fontSize: 12,
color: Colors.white,
fontWeight: FontWeight.bold,
),
),
backgroundColor: Color(0xFFe91e63),
));
}
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('Save image to disk'),
centerTitle: true,
backgroundColor: Color(0xFFe91e63),
actions: [
IconButton(
onPressed: () {
_saveImage(context);
},
icon: const Icon(Icons.save,color: Colors.white,),
),
],
),
body: Center(
child: Container(
padding: const EdgeInsets.only(
left: 24.0,
right: 24.0,
),
child: ClipRRect(
borderRadius: BorderRadius.circular(30.0),
child: Image.network(_url),
),
),
),
);
}
}
Output:
Conclusion:
In this article, we have learned how to download and save an image to a file in Flutter. By following these steps, you can incorporate image downloading and saving functionality into your Flutter applications, opening up possibilities for offline image viewing and user-driven image saving features.
I hope now you understand how to download image. seriously you don’t believe when i don’t know how to download image then i try find the solution in many youtube channel and article but no one can explains briefly how to do this task. but finally i got. So now this is your turn do code and enjoy it.
If you stuck and don't understand the code or you go to the deep in this topic so you can also check out my new post in this topic 👇👇👇
❤️❤️ Thanks for reading this article ❤️❤️
If I got something wrong? Let me know in the comments. I would love to improve 🥰🥰🥰.
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