轮播图
#import "ViewController.h"#import "SecViewController.h"@interface ViewController (){
//实现三个属性
UIScrollView *scroll;
NSArray *imgArr;//图片
UIPageControl *page;//页面
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//self.view.backgroundColor = [UIColor whiteColor];
scroll = [[UIScrollView alloc]initWithFrame:self.view.frame];
//添加协议
scroll.delegate = self;
[self.view addSubview:scroll];
imgArr = @[@"guide1",@"guide2",@"guide3",@"guide4",];
//设置图片进行滚动
scroll.pagingEnabled = YES;
for (int i = 0; i < imgArr.count; i++)
{
UIImageView *img = [[UIImageView alloc]initWithFrame:CGRectMake(scroll.frame.size.width * i, 0, self.view.frame.size.width, self.view.frame.size.height)];
img.userInteractionEnabled = YES;
if (i == imgArr.count - 1)
{
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[btn setTitle:@"立即体验" forState:UIControlStateNormal];
btn.frame = CGRectMake((self.view.frame.size.width -100) / 2 , 600 , 100, 44);
[btn addTarget:self action:@selector(Click) forControlEvents:UIControlEventTouchUpInside];
btn.layer.cornerRadius = 10;
btn.layer.masksToBounds = YES;
btn.backgroundColor = [UIColor redColor];
[img addSubview:btn];
}
img.image = [UIImage imageNamed:imgArr[i]];
[scroll addSubview:img];
}
scroll.contentSize = CGSizeMake(self.view.frame.size.width * imgArr.count, self.view.frame.size.height);
//取消弹簧效果
scroll.bounces = NO;
//隐藏滚动条
scroll.showsHorizontalScrollIndicator = NO;
//页码 (点)
page = [[UIPageControl alloc]initWithFrame:CGRectMake((self.view.frame.size.width -100) / 2, 536, 100, 20)];
page.numberOfPages = imgArr.count;
//设置初始页码
page.currentPage = 0;
//设置页码的颜色
page.pageIndicatorTintColor = [UIColor yellowColor];
[self.view addSubview:page];
}
#pragma -
#pragma mark -UIScrollViewDelegate
-(void)scrollViewDidScroll:(UIScrollView *)scrollView
{
NSLog(@"contentOffset: x: %f,y: %f",scrollView.contentOffset.x,scrollView.contentOffset.y);
//求余
NSInteger index = scroll.contentOffset.x / scrollView.frame.size.width;
page.currentPage = index;
}
- (void)Click
{
SecViewController *mc = [[SecViewController alloc]init];
[self presentViewController:mc animated:YES completion:^{
}];
}
