daentech/shared-storage: 📁 Flutter plugin to get Android shared folders like DCIM, Downloads, Video, Audio. Works with Android 4.1+ (API Level 16+) · GitHub

/// Get Android [downloads] top-level shared folder
/// You can also create a reference to a custom directory as: `EnvironmentDirectory.custom('Custom Folder')`
final sharedDirectory =
    await getExternalStoragePublicDirectory(EnvironmentDirectory.downloads);

print(sharedDirectory.path); /// `/storage/emulated/0/Download`

/// Get Android [downloads] shared folder for Android 9+
final sharedDirectory =
    await getMediaStoreContentDirectory(MediaStoreCollection.downloads);

print(sharedDirectory.path); /// `/external/downloads`

/// Get permissions to manage an Android directory
final selectedUriDir = await openDocumentTree();

print(selectedUriDir);

/// Create a new file using the `SAF` API
final newDocumentFile = await createDocumentFile(
  mimeType: '	text/plain',
  content: 'My Plain Text Comment Created by shared_storage plugin',
  displayName: 'CreatedBySharedStorageFlutterPlugin',
  directory: anySelectedUriByTheOpenDocumentTreeAPI,
);

print(newDocumentFile);

/// You have [write] and [read] access to all persisted [URI]s
final listOfPersistedUris = await persistedUriPermissions();

print(listOfPersistedUris);

/// Can be any [URI] returned by the `persistedUriPermissions`
final uri = ...;

/// After calling this, you no longer has access to the [uri]
await releasePersistableUriPermission(uri);

/// Can be any [URI], but the method will only return [true] if the [uri]
/// is also present in the list returned by `persistedUriPermissions`
final uri = ...;

/// Verify if you have [write] and [read] access to a given [uri]
final isPersisted = await isPersistedUri(uri);