摘要： 首先实现UIScrollViewDelegate协议：#import <UIKit/UIKit.h> @interface Activity01ViewController : UIViewController<UIScrollViewDelegate>{ UIScrollView *myscrollview; } @property (nonatomic,retain) UIScrollView *myscrollview; @end实现协议的下列方法:#import <UIKit/UIKit.h> @interface Activity01ViewCon 阅读全文