IOS中NSNotification使用笔记

1 基本用法

添加观察（可能很多页面）

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(changeIntlCode:) name:NOTIFICATION_SUCCESS_SELECT_INTLCODE object:nil];

发出通知（可能只有一个页面）

[[NSNotificationCenter defaultCenter] postNotificationName:NOTIFICATION_SUCCESS_SELECT_INTLCODE object:nil userInfo:[NSDictionary dictionaryWithObject:model forKey:@"selectedIntlCodeModel"]];

在 dealloc中移除监听

[[NSNotificationCenter defaultCenter] removeObserver:self name:NOTIFICATION_SUCCESS_SELECT_INTLCODE object:nil];

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