objective-c - Passing data between subviews in cocoa

Question

I am new to objective C cocoa programming and I would like to know how to pass data between subviews when using a split view. The purpose is to set up a view which contains two views (top and bottom). In the topview I would like to add a combo box which holds an array of objects. When selecting an object from the list it should be displayed in the bottom view. Besides the combo box there should be a button 'Add' which allows me to set a view from a nib in the bottom view. In this view there should be a 'save' button which adds the inputed data to the array of objects and reloads the combo box of the top view including the new object. Can anybody help me out?

tnx

Answer 1

您应该NSNotificationCenter用于此目的。在这里，找这篇文章NSNotification & NSNotificationCenter

或者它可能是一些符合某些协议的独立对象。每次用户单击保存按钮时，该对象都会从委托方法 ( -userDidInputTheData:(NSString*)data;) 接收数据，并将其传递给另一个子视图。您可以在 NSViewController 或 NSWindowViewController 子类中实现所有代码。