iOS基于UIScrollView实现滑动引导页

上代码前，我们先来看下实现的效果图：

WelcomeViewController.h

#import  
 
@interface WelcomeViewController : UIViewController 
 
@end 

WelcomeViewController.m 

#import "WelcomeViewController.h" 
#define IMAGECOUNT 3 
 
@interface WelcomeViewController ()  
@property (nonatomic, strong)UIPageControl *pageControl; 
 
@end 
 
@implementation WelcomeViewController 
 
- (void)viewDidLoad { 
  [super viewDidLoad]; 
  //创建ScrollView 
  UIScrollView *sv = [[UIScrollView alloc] init]; 
  sv.frame = self.view.bounds; 
  //设置边缘不弹跳 
  sv.bounces = NO; 
  //整页滚动 
  sv.pagingEnabled = YES; 
  sv.showsHorizontalScrollIndicator = NO; 
   
  //加入多个子视图(ImageView) 
  for(NSInteger i=0; i

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