滚动视图UIScrollView
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int i;
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.myScrollV = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, WIDTH, HEIGHT)];
self.myScrollV.backgroundColor = [UIColor whiteColor];
self.myScrollV.contentSize = CGSizeMake(WIDTH * 4, HEIGHT / 4);
self.myScrollV.delegate = self;
[self.view addSubview:self.myScrollV];
UIImageView *imageV = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, WIDTH, HEIGHT / 4)];
imageV.image = [UIImage imageNamed:@"/Users/scjy/Desktop/UI代码/SecrolView/SecrolView/屏幕快照 2016-03-11 下午12.54.17.png"];
[self.myScrollV addSubview:imageV];
UIImageView *imageV1 = [[UIImageView alloc] initWithFrame:CGRectMake(WIDTH, 0, WIDTH , HEIGHT / 4)];
imageV1.image = [UIImage imageNamed:@"/Users/scjy/Desktop/UI代码/SecrolView/SecrolView/屏幕快照 2016-03-11 下午12.54.27.png"];
[self.myScrollV addSubview:imageV1];
UIImageView *imageV3 = [[UIImageView alloc] initWithFrame:CGRectMake(WIDTH * 3, 0, WIDTH , HEIGHT / 4)];
imageV3.image = [UIImage imageNamed:@"/Users/scjy/Desktop/UI代码/SecrolView/SecrolView/屏幕快照 2016-03-11 下午12.54.00.png"];
[self.myScrollV addSubview:imageV3];
UIImageView *imageV2 = [[UIImageView alloc] initWithFrame:CGRectMake(WIDTH * 2, 0, WIDTH, HEIGHT / 4)];
imageV2.image = [UIImage imageNamed:@"/Users/scjy/Desktop/UI代码/SecrolView/SecrolView/屏幕快照 2016-03-11 下午12.55.26.png"];
[self.view addSubview:imageV2];
UIImageView *imageV4 = [[UIImageView alloc] initWithFrame:CGRectMake(WIDTH * 4, 0, WIDTH, HEIGHT / 4)];
imageV4.image = [UIImage imageNamed:@"/Users/scjy/Desktop/UI代码/SecrolView/SecrolView/屏幕快照 2016-03-11 下午2.29.19.png"];
[self.view addSubview:imageV4];
self.myScrollV.pagingEnabled = YES;
//影藏滚动条
self.myScrollV.showsHorizontalScrollIndicator = NO;
self.myScrollV.directionalLockEnabled = YES;
[self.myScrollV addSubview:imageV2];
self.page = [[UIPageControl alloc] initWithFrame:CGRectMake(100, HEIGHT / 4 - 50, 200, 40)];
self.page.backgroundColor = [UIColor clearColor];
self.page.numberOfPages = 4;
self.page.currentPage = 0;
[self.view addSubview:self.page];
-(void)scrollViewDidScroll:(UIScrollView *)scrollView
{
if (scrollView.contentOffset.x >= 0 && scrollView.contentOffset.x <= WIDTH * 3)
{
self.page.currentPage =(int)(scrollView.contentOffset.x / WIDTH);
}
else if (scrollView.contentOffset.x < 0)
{
scrollView.contentOffset = CGPointMake(WIDTH * 3, scrollView.contentOffset.y);
self.page.currentPage = (scrollView.frame.size.width -WIDTH) / WIDTH;
}
else if (scrollView.contentOffset.x > 3 * WIDTH)
{
scrollView.contentOffset = CGPointMake(0, scrollView.contentOffset.y);
self.page.currentPage = 0;
}
#define HEIGHT self.view.frame.size.height
#define WIDTH self.view.frame.size.width
@interface ViewController : UIViewController<UIScrollViewDelegate>
@property (strong,nonatomic) UIScrollView *myScrollV;
@property (strong,nonatomic) UIPageControl *page;
@end
}
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