ios下NSNotification的使用

第一步:注册NSNotificaiton

[[NSNotificationCenter defaultCenter] addObserver:self

selector:@selector(func:)

name:@"notifiName"

object:nil];

实现接收到通知后回调方法

-(void) PlayVideo:(NSNotification *)notification {

}

第二步：发送通知

NSNotification *notification= [NSNotification notificationWithName:@"PlayVideo" object:showViewController userInfo:dict];

[[NSNotificationCenter defaultCenter] postNotification:notification];

第三步：注销通知监听

[[NSNotificationCenter defaultCenter]removeObserver:self

name:@"PlayVideo"

object:nil];