MLKitTranslate Framework Reference

  • ModelManager is a class in MLKit used to manage machine learning models.

  • It provides methods for checking if a model is downloaded, downloading models, and deleting downloaded models.

  • You can get a ModelManager instance through the modelManager() class method.

  • To monitor download progress and outcome, listen to .mlkitModelDownloadDidSucceed and .mlkitModelDownloadDidFail notifications.

  • Use the isModelDownloaded() function to check if a model is downloaded before using it.

ModelManager

class ModelManager : NSObject

Manages models that are used by MLKit features.

  • Returns a ModelManager instance.

    Declaration

    Swift

    class func modelManager() -> Self

    Return Value

    A ModelManager instance.

  • Unavailable. Use the modelManager() class method.

  • Checks whether the given model has been downloaded.

    Declaration

    Swift

    func isModelDownloaded(_ remoteModel: MLKRemoteModel) -> Bool

    Parameters

    remoteModel

    The model to check the download status for.

    Return Value

    Whether the given model has been downloaded.

  • Downloads the given model from the server to a local directory on the device. Use isModelDownloaded(_:) to check the download status for the model. If this method is invoked and the model has already been downloaded, a request is made to check if a newer version of the model is available for download. If available, the new version of the model is downloaded.

    To know when this method is done, observe the .mlkitModelDownloadDidSucceed and .mlkitModelDownloadDidFail notifications defined in MLKModelDownloadNotifications.h. If the latest model is already downloaded, completes without additional work and posts .mlkitModelDownloadDidSucceed notification, indicating that the model is ready to use.

    Declaration

    Swift

    func download(_ remoteModel: MLKRemoteModel, conditions: MLKModelDownloadConditions) -> Progress

    Parameters

    remoteModel

    The model to download.
    conditions

    The conditions for downloading the model.

    Return Value

    Progress for downloading the model.

  • Deletes the downloaded model from the device.

    Declaration

    Swift

    func deleteDownloadedModel(_ remoteModel: MLKRemoteModel, completion: @escaping (Error?) -> Void)

    Parameters

    remoteModel

    The downloaded model to delete.
    completion

    Handler to call back on the main queue when the model deletion completed successfully or failed with the given error.