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Objective-C 的协议

 3 years ago
source link: http://blog.danthought.com/programming/2020/12/03/objective-c-protocol/
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neoserver,ios ssh client
Objective-C 的协议

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Objective-C 的协议

本文并不是一篇完整的教程，更像一篇快速笔记，讲解 Objective-C 中的协议。

Objective C

协议列出了一组方法，有些可以是选择实现，有些是必须实现，如果决定实现特定协议的所有方法，也就意味着遵守这项协议：

  1. @required 后面的方法是必须实现，默认都是必须实现；
  2. @optional 后面的方法是选择实现。
@class PWListener;

@protocol PWListenerDelegate <NSObject>

- (void)listenerDidStartSuccess:(PWListener *)listener;
- (void)listenerDidStartFailed:(PWListener *)listener;
- (void)listener:(PWListener *)listener didConnectDevice:(PWLocalDevice *)device;

@end

@interface PWListener : NSObject

@property (weak, nonatomic) id<PWListenerDelegate> delegate;

- (instancetype)initWithAbility:(PWAbility *)ability port:(NSInteger)port;

- (void)start;

@end

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