ViewCondition

public protocol ViewCondition

A tracking condition attached to a view instance

Can be attached to an instance of UIView or its subclass by calling trackView on it

  • Notifies the condition to evaluate its state based on current visible percentage of the view and the current scroll state

    Note

    This method is always called on the background thread

    Declaration

    Swift

    func evaluate(for state: ScrollState, viewPercentage: Float)

    Parameters

    state

    The current scroll state of the parent scrollable view
    viewPercentage

    Current visible percentage of the view

    • Lies between 0-100
    • A value of 0 means view is not visible
    • A value of 100 means view is fully visible

  • Notifies the condition to reset to the default state.

    This is called when the conditions attached to a view are modified or set again (in case of recycling of views)

    Note

    This method is always called on the background thread

    Declaration

    Swift

    func reset()