旋轉的圖片（MainPageViewDemo)，

旋轉的圖片（MainPageViewDemo)，

：

工程圖：

 

此代碼需要加入第三方庫MainPageView.

代碼：

RootViewController.h

#import <UIKit/UIKit.h>@class MainPageView;@interface RootViewController : UIViewController{    MainPageView* mainPageView;}@property (nonatomic,retain) MainPageView* mainPageView;@end

 

RootViewController.m

#import "RootViewController.h"//加入標頭檔#import "MainPageView.h"- (void)viewDidLoad{    [super viewDidLoad];    // Do any additional setup after loading the view.            mainPageView = [[MainPageView alloc] initWithFrame:CGRectMake(0, 20, 320, 460)];    mainPageView.backgroundColor = [UIColor lightGrayColor];    [mainPageView initDrawViewData];    self.view = mainPageView;}