摘要：
//设置协议.@interface RootViewController : UIViewController//声明两个公用属性,也可以使用延展@property (nonatomic,retain)UIScrollView * aScrollView;@property (nonatomic,retain)UIPageControl * aPageControl;@end//以下为.m文件#import "RootViewController.h"@interface RootViewController ()@end@implementation RootViewCo 阅读全文