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Auto save PDF files in Flutter

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Nutrient Flutter SDK saves a modified open document to your device’s local storage. You can also save changes manually. The SDK saves files locally on the device, so you don’t need a server.

Use auto save

Nutrient Flutter SDK saves changed, created, or deleted annotations and bookmarks in these cases:

  • The application goes into the background.
  • The device configuration changes, such as when the device orientation, locale, or keyboard changes.
  • Another view fully covers the PDF view.
  • The user digitally signs a document.

Disable automatic saving

Autosave is enabled by default. To disable autosave, set disableAutosave: true on the NutrientViewConfiguration object. Refer to the Nutrient view configuration(opens in a new tab) API reference for details.

NutrientDocumentView(
  documentPath: documentPath,
  configuration: const NutrientViewConfiguration(disableAutosave: true),
)

Save manually

Call save() on the document exposed by the controller to save changes manually:

final saved = await controller.document.save();

save() returns true when the platform accepts the save request. To get notified when the save completes, listen to the documentSaved event. Refer to the document saved event(opens in a new tab) API reference for details.

controller.events.documentSaved.listen((event) {
  print('Document saved to ${event.path ?? 'the original file'}');
});

To save documents manually with Nutrient Flutter SDK, pass a writable documentPath to NutrientDocumentView.