【Objective-c 学习笔记】广播模式

最新推荐文章于 2024-05-23 21:40:09 发布

zhouyg1992

最新推荐文章于 2024-05-23 21:40:09 发布

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分类专栏： Objective-c

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本文介绍了如何使用Objective-C实现用户广播和通知中心的功能，包括用户注册、广播消息及接收消息的过程。

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#import <Foundation/Foundation.h>

@protocol Listening <NSObject>

- (void)listen;

@end

////////////////////////////////
@interface User : NSObject <Listening>
@property (nonatomic,copy) NSString *name;
@end

@implementation User
@synthesize name;
- (void)listen
{
    NSLog(@"I am %@ I got it!", self.name);
}
@end

///////////////////////////////
@interface NoticeCenter : NSObject
@property (nonatomic,retain) NSMutableArray *registers;
- (void)registerUser:(id<Listening>)aUser;
- (void)brodcastFromUser:(id<Listening>)aUser;
@end

@implementation NoticeCenter

@synthesize registers;

- (id)init
{
    if (self = [super init]) {
        self.registers = [[NSMutableArray alloc] initWithCapacity:3];
    }
    return self;
}

- (void)registerUser:(id<Listening>)aUser
{
    [self.registers  addObject:aUser];
}
- (void)brodcastFromUser:(id<Listening>)aUser
{
    [self.registers removeObject:aUser];
    for (id obj in self.registers) {
        [obj listen];
    }
}

@end
/////////////////////

int main(int argc, const char * argv[])
{
    
    @autoreleasepool {
        
        NSLog(@"Now broadcast begaining");  
        
        NoticeCenter *notice = [[NoticeCenter alloc] init];
        
        User *sandy = [[User alloc] init];
        sandy.name = @"sandy";
        User *jack = [[User alloc] init];
        jack.name = @"jack";
        User *lucy = [[User alloc] init];
        lucy.name = @"lucy";
        
        [notice registerUser:sandy];
        [notice registerUser:jack];
        [notice registerUser:lucy];
        
        
        [notice brodcastFromUser:sandy];
        
    }
    
    
    return 0;
}