In Flutter, you can write files to external storage using the path_provider
package. This package gives you access to device directories like documents, downloads, and external storage.
First, add the path_provider
package to your project by adding the following line to your pubspec.yaml
file:
path_provider: ^^2.0.1
Then, import the package in your Dart code:
import 'package:path_provider/path_provider.dart';
To write a file to external storage, use the getExternalStorageDirectory
method to get the path to the external storage directory, and then use the Dart File
class to write the file:
// Get the directory for external storage
Directory directory = await getExternalStorageDirectory();
String path = directory.path;
// Define the file name and content
String fileName = "my_file.txt";
String fileContent = "Hello, world!";
// Create a File object and write the content to it
File file = File('$path/$fileName');
await file.writeAsString(fileContent);
This code gets the external storage directory using the getExternalStorageDirectory
method, which returns a Directory
object representing the root of the external storage directory. It then defines the file name and content, creates a File
object using the path and file name, and uses the writeAsString
method to write the content to the file.
Note that you'll need to request the WRITE_EXTERNAL_STORAGE
permission in the AndroidManifest.xml
file of your app to write to external storage.
Asked: 2021-10-20 11:00:00 +0000
Seen: 10 times
Last updated: Sep 12 '21