轮播图

#import "ViewController.h"

#import "MainViewController.h"
#import "UIView+SDAutoLayout.h"


@interface ViewController ()<UIScrollViewDelegate>

@property(nonatomic,strong)UIScrollView *scrollView;

@end

@implementation ViewController
-(void)viewWillAppear:(BOOL)animated
{
    self.navigationController.navigationBar.hidden = YES;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    
  
    [self scrollViewItem];

    
    
    
    
}
-(void)scrollViewItem
{
    self.scrollView = [[UIScrollView alloc]initWithFrame:self.view.frame];
    
    self.scrollView.delegate = self;
    
    self.scrollView.contentSize = CGSizeMake(3 * self.view.frame.size.width, self.view.frame.size.height);
    
    self.scrollView.bounces = NO;
    
    self.scrollView.pagingEnabled = YES;
    
    self.scrollView.showsVerticalScrollIndicator = NO;
    
    for (int i = 0; i < 3; i++)
    {
        UIImageView *imgV = [[UIImageView alloc]initWithFrame:CGRectMake(i*self.view.frame.size.width, 0, self.view.frame.size.width, self.view.frame.size.height)];
        NSArray *arr = @[@"1",@"2",@"3"];
        
        imgV.image = [UIImage imageNamed:arr[i]];
        
        if (i == 2)
        {
            UIButton *btn = [[UIButton alloc]init];
            [imgV addSubview:btn];
            btn.sd_layout.topSpaceToView(self, 20).leftSpaceToView(self, 300).widthIs(90).heightIs(30);
            [btn setTitle:@"立即体验" forState:(UIControlStateNormal)];
            [btn setTitleColor:[UIColor whiteColor] forState:(UIControlStateNormal)];

            [btn addTarget:self action:@selector(btnClick) forControlEvents:(UIControlEventTouchUpInside)];
            
            imgV.userInteractionEnabled = YES;
        }
        
        [ self.scrollView addSubview:imgV];
    }
    [self.view addSubview: self.scrollView];
    
}

-(void)btnClick
{
    MainViewController *mainView = [[MainViewController alloc]init];
    [self.navigationController pushViewController:mainView animated:YES];
}


@end