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.

Note

Instant only supports a subset of PSPDFKit’s annotation types. As such, this class sanitizes any PDFConfiguration passed to its designated initializer, updateConfigurationWithBuilder:, or updateConfigurationWithoutReloadingWithBuilder:.
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 approriately 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 }