Iphone Xib內部結構

Question

當我們看到xib文件的源代碼時，有一些鍵值和關鍵字。任何人都知道這些關鍵字的含義，以及我們如何知道哪個關鍵字我們正在使用哪個地方。我知道邏輯裏面發生了什麼，但沒有足夠的關鍵字知識（在xib源代碼中使用）。如果有任何教程或文檔可以在這裏發佈，它會幫助我。

感謝

Answer 1

Xib source code based on parents, child and sibling concept, it means it fully works on tree concept. 

<string key="className">RSViewController</string> 
<string key="superclassName">UIViewController</string> 
<object class="IBClassDescriptionSource" key="sourceIdentifier"> 
<string key="majorKey">IBProjectSource</string> 
<string key="minorKey">./Classes/RSViewController.h</string> 

Class name :- Your current class name. 
SuperclassName :- In which class your current class inherited. 

Like that all keywords have its own value.