GoogleNavigation Framework Reference

AI-generated Key Takeaways

• GMSMapStyle allows customization of the visual display of Google Maps features like roads, parks, and points of interest.

• You can change the style of map features or hide them completely to highlight specific elements or complement your app's content.

• Styles can be created using a JSON string with styleWithJSONString:error: or from a JSON file with styleWithContentsOfFileURL:error:.

• Invalid JSON, unreadable files, or incorrect URLs will result in a nil return value and populate an error object if provided.

GMSMapStyle

@interface GMSMapStyle : NSObject

GMSMapStyle holds details about a style which can be applied to a map.

With style options you can customize the presentation of the standard Google map styles, changing the visual display of features like roads, parks, and other points of interest. As well as changing the style of these features, you can also hide features entirely. This means that you can emphasize particular components of the map or make the map complement the content of your app.

For more information see: https://developers.google.com/maps/documentation/ios-sdk/styling

• +styleWithJSONString:error:

  Creates a style using a string containing JSON.

  Returns nil and populates error (if provided) if style is invalid.

  Declaration

  Swift

  convenience init(jsonString style: String) throws

  Objective-C

  + (nullable instancetype)styleWithJSONString:(nonnull NSString *)style
                                         error:
                                             (NSError *_Nullable *_Nullable)error;

• +styleWithContentsOfFileURL:error:

  Creates a style using a file containing JSON.

  Returns nil and populates error (if provided) if style is invalid, the file cannot be read, or the URL is not a file URL.

  Declaration

  Swift

  convenience init(contentsOfFileURL fileURL: URL) throws

  Objective-C

  + (nullable instancetype)
      styleWithContentsOfFileURL:(nonnull NSURL *)fileURL
                           error:(NSError *_Nullable *_Nullable)error;