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IOS 开发中很有用的技术,KVO,即:Key-Value Observing,它提供一种机制,当指定的对象的属性被修改后,则对象就会接受到通知。简单的说就是每次指定的被观察的对象的属性被修改后,KVO就会自动通知相应的观察者了。 二,使用方法 1. 注册,指定被观察者的属性, 2. 实现回调方法 3. 移除观察-KVO is useful in the development of iOS technology,, namely: the Key- Value Observing, it provides a mechanism, when the specified object s properties is modified, the object will receive the notice. Simple said is observed each specified properties of the object has been modified, the KVO will automatically inform the corresponding observer.
Date : 2025-12-26 Size : 60kb User : winon
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