ios開發的幾句話

1 ：若是沒法保證子類行爲的一致性，那麼就用委託

If the subClass cann't keep with superClass,use delegate rather than inheritance.

2:   屏幕上看到的，都是 UIVew

Everything you see on Screen is UIView.

3:  若是對性能要求高，慎用 Interface Build

if application's performance is important,be discreet for the interface build.

 

4:  copy是建立， retain是引用

the copy operation is create a new one,but the retain operation is just a reference.

 

5 ：alloc須要 release,convenient 不須要 release

alloc method need corresponding release method,but convenient method not.

 

6:   加載到 NSArray/NSMutableArray 裏的對象，不須要負責 release

The objects added to NSArray/NSMutableArray need not to be released.

7:  IBOutlet,IBAction 爲你開啓了訪問 Interface Build 中對象的大門

IBOutlet and IBAction open the door to access the objects in Interface build.

 

8:  UIApplicationDelegate 負責應用程序的生命週期，而 UIViewController 負責 View 的生命週期

UIApplicationDelegate is responsible for the application life cycle,but UIViewController for the UIView.

9: 爲了程序的健壯性，儘可能實現 Delegate 的生命週期函數

if you want to develop a robust application,implement the life cycle methods as more as possbile.

10: 觸摸的不是 UIEvent, 而是 NSSet 的 UIView

what you touch on screen is not UIEvent but UIView