UIscrollview

#import "DengViewController.h"

@interface DengViewController ()


@end


@implementation DengViewController

@synthesize pc=_pc;


- (void)viewDidLoad
{
    [super viewDidLoad];
    CGRect rect= CGRectMake(20, 20, width, height);
    
    UIScrollView *scrollew = [[UIScrollView alloc] initWithFrame:rect];
    
    scrollew.backgroundColor=[UIColor blueColor];
    scrollew.delegate=self;
    
    NSString *imageName;
    UIImage *im;
    UIImageView *iv;
    
    for (int i=0; i<pictures; i++) {
        imageName=[NSString stringWithFormat:@"%d.png",i+1];
        im=[UIImage imageNamed:imageName];
        rect=CGRectMake(width*i, 0, width, height);
        iv=[[UIImageView alloc] initWithFrame:rect];
        iv.image=im;
        [scrollew addSubview:iv];
        
        
    }
    ///设置滑动范围
    scrollew.contentSize=CGSizeMake(width*pictures, height);
    
    ///设置滑动时显示条的风格
    scrollew.indicatorStyle=UIScrollViewIndicatorStyleWhite;
    //关闭弹跳 .yes可以拉
    scrollew.bounces=YES;
    
    //水平方向滑动指示器
   // scrollew.showsHorizontalScrollIndicator=NO;
    
    ///一页一页滑动,no可以暂停
    scrollew.pagingEnabled=YES;
    
    [self.view addSubview:scrollew];
    
    rect=CGRectMake(20, 370, width, 20);
    UIPageControl *pc = [[UIPageControl alloc] initWithFrame:rect];
    //点的
    pc.userInteractionEnabled=NO;
    ///指定指示的个数
    pc.numberOfPages=pictures;
    
    pc.backgroundColor=[UIColor blackColor];
    
    self.pc=pc;
    [self.view addSubview:pc];
    
    // Do any additional setup after loading the view, typically from a nib.
}


- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
    ///当用户滑动scrollview时.触发
    
    self.pc.currentPage=(width/2+scrollView.contentOffset.x)/width;
}
- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end