将AVB17221EntityDiscoveryDelegate协议从Objective C转换为Swift

Question

我正在使用AudioVideoBridging框架。我也在Swift编写我的应用程序。 我对这一切都很陌生。

我查找了一些其他协议转换并遵循相同的格式，但我收到了编译错误。

这是目标c协议

- (void)didAddRemoteEntity:(AVB17221Entity *)newEntity on17221EntityDiscovery:(AVB17221EntityDiscovery *)entityDiscovery;
- (void)didRemoveRemoteEntity:(AVB17221Entity *)oldEntity on17221EntityDiscovery:(AVB17221EntityDiscovery *)entityDiscovery;
- (void)didRediscoverRemoteEntity:(AVB17221Entity *)entity on17221EntityDiscovery:(AVB17221EntityDiscovery *)entityDiscovery;
- (void)didUpdateRemoteEntity:(AVB17221Entity *)entity changedProperties:(AVB17221EntityPropertyChanged)changedProperties on17221EntityDiscovery:(AVB17221EntityDiscovery *)entityDiscovery;
- (void)didAddLocalEntity:(AVB17221Entity *)newEntity on17221EntityDiscovery:(AVB17221EntityDiscovery *)entityDiscovery;
- (void)didRemoveLocalEntity:(AVB17221Entity *)oldEntity on17221EntityDiscovery:(AVB17221EntityDiscovery *)entityDiscovery;
- (void)didRediscoverLocalEntity:(AVB17221Entity *)entity on17221EntityDiscovery:(AVB17221EntityDiscovery *)entityDiscovery;
- (void)didUpdateLocalEntity:(AVB17221Entity *)entity changedProperties:(AVB17221EntityPropertyChanged)changedProperties on17221EntityDiscovery:(AVB17221EntityDiscovery *)entityDiscovery;

这是我的转换：

func didAddRemoteEntity (newEntity: AVB17221Entity!, on17221EntityDiscovery entityDiscovery: AVB17221EntityDiscovery!){}

func didRemoveRemoteEntity (oldEntity: AVB17221Entity!, on17221EntityDiscovery entityDiscovery: AVB17221EntityDiscovery!){}

func didRediscoverRemoteEntity (entity: AVB17221Entity!, on17221EntityDiscovery entityDiscovery: AVB17221EntityDiscovery!){}

func didUpdateRemoteEntity (entity: AVB17221Entity!, changedProperties changedProperties : AVB17221EntityPropertyChanged!, on17221EntityDiscovery entityDiscovery: AVB17221EntityDiscovery!){}

func didAddLocalEntity (newEntity: AVB17221Entity!, on17221EntityDiscovery entityDiscovery: AVB17221EntityDiscovery!){}

func didRemoveLocalEntity(oldEntity: AVB17221Entity!, on17221EntityDiscovery entityDiscovery: AVB17221EntityDiscovery!){}

func didRediscoverLocalEntity(entity: AVB17221Entity!, on17221EntityDiscovery entityDiscovery: AVB17221EntityDiscovery!){}

func didUpdateLocalEntity (entity: AVB17221Entity!, changedProperties changedProperties : AVB17221EntityPropertyChanged!, on17221EntityDiscovery entityDiscovery: AVB17221EntityDiscovery!){}

这是我的班级声明：

class MainWindowController : NSObject, AVB17221EntityDiscoveryDelegate

以下是编译器的说法：

  

类型'MainWindowController'不符合协议'AVB17221EntityDiscoveryDelegate'

任何帮助都将非常感谢....

Answer 1

我在Apple Developer论坛上得到了答案：

将行更改为：

func didUpdateRemoteEntity (entity: AVB17221Entity!, changedProperties : AVB17221EntityPropertyChanged, on17221EntityDiscovery entityDiscovery: AVB17221EntityDiscovery!){}
func didUpdateLocalEntity (entity: AVB17221Entity!, changedProperties : AVB17221EntityPropertyChanged, on17221EntityDiscovery entityDiscovery: AVB17221EntityDiscovery!){}

AVB17221EntityPropertyChanged不是引用类型，因此您不应将其设为可选项。