Instance Property

key

The key of the metadata item.

Declaration

@property(nonatomic, readonly, copy) id<NSObject, NSCopying> key;

Discussion

The key property contains the true key used to identify the contents of the metadata item. This value is specific to the key space of the metadata item.

See Also

Getting Keys and Key Spaces

keySpace

The key space for the metadata item’s key.

AVMetadataKeySpace

A value that defines a metadata key space.

commonKey

The common key of the metadata item.

AVMetadataKey

A value that specifies a type of metadata