UIScrollView快速创建

#import "ViewController.h"

@interface ViewController ()<UIScrollViewDelegate>

@property(nonatomic,strong) UIScrollView *scrollView;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    [self.view addSubview:self.scrollView];
}

- (UIScrollView *)scrollView {
    if (!_scrollView) {
        _scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 160, [UIScreen mainScreen].bounds.size.width, 200)];
        _scrollView.contentSize = CGSizeMake([UIScreen mainScreen].bounds.size.width * 7, 100);
        _scrollView.delegate = self;
        _scrollView.pagingEnabled = YES;
        _scrollView.tag = 1001;
        _scrollView.showsVerticalScrollIndicator = NO;
        _scrollView.showsHorizontalScrollIndicator = NO;
        _scrollView.bounces = NO;
        for (NSInteger i = 1; i <= 7; i++) {
            [_scrollView addSubview:[self createImgView:i]];
        }
    }
    return _scrollView;
}

- (UIImageView *)createImgView:(NSInteger)index {
    UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:[NSString stringWithFormat:@"%ld",index]]];
    imageView.frame = CGRectMake([UIScreen mainScreen].bounds.size.width * (index-1), 0, [UIScreen mainScreen].bounds.size.width, 200);
    imageView.layer.borderWidth = 1;
    imageView.contentMode = UIViewContentModeScaleAspectFit;
    return imageView;
}

@end