GoogleNavigation Framework Reference
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Page Summary
The GMSNavigationAccessoryView protocol enables customization of accessory UI elements on the main view.
Implementing this protocol is necessary for accessory views to be displayed.
The heightForAccessoryViewConstrainedToSize:onMapView: method determines the desired height of the accessory view, confined by a given size, within the map view.
GMSNavigationAccessoryView
@protocolGMSNavigationAccessoryView<NSObject>
Protocol defining methods that support custom views specifying accessory UI elements applied to
the primary view. Accessory views must implement this protocol in order to be visible.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-27 UTC."],[],["The `GMSNavigationAccessoryView` protocol defines how custom accessory UI elements are displayed on a primary view. Accessory views must implement this protocol to be visible. The key method is `heightForAccessoryViewConstrainedToSize:onMapView:`, which determines the desired height of the accessory view, given a size constraint and a `GMSMapView` instance. This method must return the height of the accessory view when constrained to a specific size.\n"]]
