GoogleNavigation Framework Reference
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GMSNavigationAccessoryView
@protocol GMSNavigationAccessoryView <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.
-
Declaration
Swift
func heightForAccessoryViewConstrained(to size: CGSize, on mapView: GMSMapView) -> CGFloat
Objective-C
- (CGFloat)heightForAccessoryViewConstrainedToSize:(CGSize)size
onMapView:
(nonnull GMSMapView *)mapView;
Return Value
Desired height of the accessory view constrained to the given size.
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Last updated 2025-08-27 UTC.
[null,null,["Last updated 2025-08-27 UTC."],[[["\u003cp\u003eThe \u003ccode\u003eGMSNavigationAccessoryView\u003c/code\u003e protocol enables customization of accessory UI elements on the main view.\u003c/p\u003e\n"],["\u003cp\u003eImplementing this protocol is necessary for accessory views to be displayed.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eheightForAccessoryViewConstrainedToSize:onMapView:\u003c/code\u003e method determines the desired height of the accessory view, confined by a given size, within the map view.\u003c/p\u003e\n"]]],["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"],null,["# GoogleNavigation Framework Reference\n\nGMSNavigationAccessoryView\n==========================\n\n @protocol GMSNavigationAccessoryView \u003cNSObject\u003e\n\nProtocol defining methods that support custom views specifying accessory UI elements applied to\nthe primary view. Accessory views must implement this protocol in order to be visible.\n- `\n ``\n ``\n `\n\n ### [-heightForAccessoryViewConstrainedToSize:onMapView:](#/c:objc(pl)GMSNavigationAccessoryView(im)heightForAccessoryViewConstrainedToSize:onMapView:)\n\n `\n ` \n\n #### Declaration\n\n Swift \n\n func heightForAccessoryViewConstrained(to size: CGSize, on mapView: ../Classes/GMSMapView.html) -\u003e CGFloat\n\n Objective-C \n\n - (CGFloat)heightForAccessoryViewConstrainedToSize:(CGSize)size\n onMapView:\n (nonnull ../Classes/GMSMapView.html *)mapView;\n\n #### Return Value\n\n Desired height of the accessory view constrained to the given `size.`"]]
