轮播图

#import "ViewController.h"

#import "zongViewController.h"

@interface ViewController ()

{

UIScrollView * theScroll;

NSArray * theArr;

UIPageControl * thePage;

}

@end

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

self.view.backgroundColor=[UIColor whiteColor];

//初始化一个滚动视图

theScroll = [[UIScrollView alloc]initWithFrame:self.view.frame];

//设置代理

theScroll.delegate = self;

//设置按页滚动

theScroll.pagingEnabled = YES;

//设置是否显示滚动条

theScroll.showsHorizontalScrollIndicator = NO;

//加载

[self.view addSubview:theScroll];

theArr = @[@"shiwu1.jpg",@"shiwu2.jpg",@"shiwu3.jpg"];

CGFloat x = 0.0;

for (int i = 0; i < theArr.count; i++) {

UIImageView * theImageView = [[UIImageView alloc]initWithFrame:CGRectMake(x, 0, self.view.frame.size.width, self.view.frame.size.height)];

theImageView.image = [UIImage imageNamed:theArr[i]];

x = x+self.view.frame.size.width;

[theScroll addSubview:theImageView];

if(i==theArr.count -1)

{

UIButton *but=[[UIButton alloc]initWithFrame:CGRectMake((self.view.frame.size.width -100)/2, 550, 100, 40)];

[but setTitle:@"立即体验" forState:UIControlStateNormal];

[but setBackgroundColor:[UIColor colorWithRed:29/250.0 green:170/250.0 blue:230/250.0 alpha:1.0]];

[but addTarget:self action:@selector(tz) forControlEvents:UIControlEventTouchUpInside];

but.layer.cornerRadius=10;

but.layer.masksToBounds=YES;

theImageView.userInteractionEnabled=YES;

[theImageView addSubview:but];

}

}

theScroll.contentSize = CGSizeMake(x, self.view.frame.size.height);

//初始化一个分页控制器

thePage = [[UIPageControl alloc]initWithFrame:CGRectMake(self.view.frame.size.width/2-30, self.view.frame.size.height/5*4, 60, 20)];

//设置分页控制器的个数

thePage.numberOfPages = theArr.count;

//设置分页控制器的颜色

thePage.pageIndicatorTintColor = [UIColor grayColor];

//设置分页控制器选中时的颜色

thePage.currentPageIndicatorTintColor = [UIColor redColor];

//加载

[self.view addSubview:thePage];

//----------------------------------

}

//实现分页控制器与滚动视图的关联

-(void)scrollViewDidScroll:(UIScrollView *)scrollView{

thePage.currentPage = theScroll.contentOffset.x/self.view.frame.size.width;

}

-(void)tz

{

zongViewController *v1=[zongViewController new];

[self presentViewController:v1 animated:YES completion:^{}];

}