是否有适用于 iOS 的数据绑定机制? [英] Is there any data binding mechanism available for iOS?

问题描述

在 .NET 中，我只是做一些类似 DataForm.Source = Object 的事情，然后奇迹发生了.平台将数据更改从 ui 文件路由到对象属性，进行验证等.我可以对 Cocoa Touch 和 CoreData 对象做类似的事情吗?

In .NET I just do something like DataForm.Source = Object and then magic happens. Platform routes data changes from ui fileds to object properties, does validation and so on. Can I do something similar with Cocoa Touch and CoreData objects?

推荐答案

Cocoa 中最接近的是键值观察".在桌面 Cocoa 框架中，您可以使用绑定将用户界面元素与底层对象挂钩，以便对象或 UI 元素中的更改反映在其他对象中.

The closest thing in Cocoa is 'Key-Value Observing'. In the desktop Cocoa framework you can use bindings to hook user interface elements up to underlying objects so that changes in the objects or UI elements are reflected in the other.

虽然 iOS 上的 Cocoa 没有这种 UI 绑定，但您仍然可以使用键值观察"将数据模型中的更改与 UI 元素同步，如下所述:

Whilst Cocoa on iOS doesn't have this sort of UI bindings, you can still use 'Key-Value Observing' to synchronise changes in the data model with UI elements as described here:

http://developer.apple.com/library/iOS/#documentation/General/Conceptual/Devpedia-CocoaApp/KVO.html

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