PSPDFInstantViewController

Objective-C


@interface PSPDFInstantViewController : PSPDFViewController

Swift

class InstantViewController : PDFViewController

A specialized variant of PDFViewController that supports annotation synchronization.

Showing a document managed by Instant in any other view controller is not supported.

Instant on iOS doesn’t support these annotation types: caret, file, redaction, and sound. It also doesn’t support PDF forms. As such, this class sanitizes its PDFConfiguration to only allow supported annotation types.

If you choose to set the builder’s editableAnnotationTypes to nil, all supported annotation types will be editable. If you set editableAnnotationTypes to an empty set, no annotations will be editable.

  • Whether the view controller should listen for server changes when visible.

    When true, the view controller will take care of subscribing to and unsubscribing from live changes from the server when it is moved on or off screen. Note that setting this value to false does not mean that you will not receive any changes from the server:
    Whenever a PSPDFInstantDocumentDescriptor is being synced, all of the related documents are updated automatically. So if, for example, you display a secondary PSPDFInstantViewController on an external display, while you are editing in a primary PSPDFInstantViewController, that secondary view controller will be updated even if it has shouldListenForServerChangesWhenVisible set to false.

    The default value of this property is true.

    Declaration

    Objective-C

    @property (nonatomic) BOOL shouldListenForServerChangesWhenVisible;

    Swift

    var shouldListenForServerChangesWhenVisible: Bool { get set }

  • Triggers a one-shot sync action.

    When the document isn’t Instant enabled, or already syncing, this method does nothing. Otherwise, it triggers a one- time sync action. This is useful when you don’t want automatic syncing to reduce the energy footprint of your app.

    Declaration

    Objective-C

    - (void)syncChanges:(nullable id)sender;

    Swift

    @IBAction func syncChanges(_ sender: Any?)

  • Whether the view controller should automatically handle certain critical errors.

    If true, when this view controller’s view is visible and a PSPDFInstantErrorIncompatibleVersion error occurs for the current document, automatic syncing will be disabled and an alert will be shown that tells the user the app must be updated.

    Defaults to true.

    We recommended that you make your app appropriately handle all errors that Instant might encounter, and then set this to false.

    Declaration

    Objective-C

    @property (nonatomic) BOOL shouldShowCriticalErrors;

    Swift

    var shouldShowCriticalErrors: Bool { get set }

  • Please use this instead of PDFConfiguration.default() whenever dealing with Instant.

    InstantViewController — and any subclass that you create — will use the object returned from this class property when you pass nil as the configuration parameter to init(document:, configuration:). This means you can globally set the defaults for your subclass by overriding this property and returning a customized object.

    Declaration

    Objective-C

    @property (class, nonatomic, readonly) PSPDFConfiguration *_Nonnull defaultConfiguration;

    Swift

    class var defaultConfiguration: PDFConfiguration { get }

  • The annotation group item that allows creating stand-alone Instant Comment threads.

    You can use its identifier to remove the item in the annotation menu that is displayed after long-pressing on the page. You can also use the item when creating a custom menu from scratch.

    Declaration

    Objective-C

    @property (class, nonatomic, readonly) PSPDFAnnotationGroupItem *_Nonnull instantCommentThreadItem;