UIViewController方法调用顺序

1.  - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
   
2. - (void)loadView
   
3. - (void)viewDidLoad
   
4.  - (void)viewWillAppear:(BOOL)animated
   
5. - (void)viewDidAppear:(BOOL)animated
   
6. - (void)viewWillDisappear:(BOOL)animated;
   
7. - (void)viewDidDisappear:(BOOL)animated
   
8. - (void)viewWillUnload;//iOS5.0添加
   
9. - (void)viewDidUnload;
   
10. - (void)didReceiveMemoryWarning;
    
11. - (void)dealloc;