摘要： http://forgecode.net/2010/02/simplifying-nsnumberformatter-use-on-the-iphone-with-objective-c-categories/Simplifying NSNumberFormatter use on the iPhone with Objective-C categoriesTuesday 2nd February... 阅读全文

摘要： 1. 定义一个方法update2. [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(update) name:@"update" object:nil]3. 在要发出通知消息的地方[[NSNotificationCenter defaultCenter] postNotificationName:@... 阅读全文