OC通知实例

#import "NotificationClass.h"

#import "AnotherNotificationClass.h"

@implementation NotificationClass

//注册通知

-(void)addNotification

{

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(changeFun:) name:@"change" object:nil];

}

-(void)changeFun:(NSNotification *)sender

{

    NSDictionary *getDic=[sender userInfo];

    NSLog(@"NotificationClass 接收到通知事件，传递的值：%@",getDic);

}

//发送通知

-(void)postNotification

{

    NSDictionary *dictionary=[NSDictionary dictionaryWithObject:@"newValue" forKey:@"obj"];

    [[NSNotificationCenter defaultCenter] postNotificationName:@"change" object:self userInfo:dictionary];//发送给自己

    

    if (!another) {

        another=[[AnotherNotificationClass alloc]init];

    }

    [[NSNotificationCenter defaultCenter] postNotificationName:@"change" object:another userInfo:dictionary];//发送给another

    

}

//移除通知

-(void)removeNotification

{

    [[NSNotificationCenter defaultCenter]removeObserver:self];

}

@end