UIScrollView和UIPageController

实现代码:

//
//  ViewController.m
//  UIpageControl
//
//  Created by dllo on 16/3/10.
//  Copyright © 2016年 dllo. All rights reserved.
//

#import "ViewController.h"
#define WIDTH self.view.frame.size.width
#define HEIGHT self.view.frame.size.height

@interface ViewController ()<UIScrollViewDelegate>

@property (nonatomic, retain)UIScrollView *scrollView;
@property (nonatomic, retain)UIPageControl *pageControl;
@property (nonatomic, retain)UILabel *titleLabel;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    self.view.backgroundColor = [UIColor yellowColor];
    self.pageControl = [[UIPageControl alloc]initWithFrame:CGRectMake(, , , )];
    self.pageControl.backgroundColor = [UIColor redColor];
    [self.view addSubview:self.pageControl];
    [self.pageControl release];
    self.pageControl.numberOfPages = ;
    self.pageControl.pageIndicatorTintColor = [UIColor grayColor];
    self.pageControl.currentPageIndicatorTintColor = [UIColor cyanColor];
    [self.pageControl addTarget:self action:@selector(pageAction:) forControlEvents:UIControlEventValueChanged];

    self.scrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(, ,WIDTH, )];
    [self.view addSubview:self.scrollView];
    [self.scrollView release];
    self.scrollView.contentSize = CGSizeMake(WIDTH * , );

    for (NSInteger i = ; i < ; i++) {
        UIImageView *imageView = [[UIImageView alloc]initWithFrame:CGRectMake(WIDTH * i + WIDTH , , WIDTH, HEIGHT)];
        imageView.image = [UIImage imageNamed:[NSString stringWithFormat:@"h%ld.jpeg", i]];
        [self.scrollView addSubview:imageView];
    }
    UIImageView *firstImageView = [[UIImageView alloc]initWithFrame:CGRectMake(, , WIDTH, HEIGHT)];
    firstImageView.image = [UIImage imageNamed:[NSString stringWithFormat:@"h6.jpeg"]];
    [self.scrollView addSubview:firstImageView];
    [firstImageView release];

    UIImageView *lastImageView = [[UIImageView alloc]initWithFrame:CGRectMake(WIDTH * , , WIDTH, HEIGHT)];
    lastImageView.image = [UIImage imageNamed:@"h0.jpeg"];
    [self.scrollView addSubview:lastImageView];
    [lastImageView release];

    //创建label
    self.titleLabel = [[UILabel alloc]initWithFrame:CGRectMake(, , , )];
    [self.view addSubview:self.titleLabel];
    [_titleLabel release];
    self.titleLabel.backgroundColor = [UIColor grayColor];
    [self.titleLabel setTextColor:[UIColor whiteColor]];
    self.titleLabel.textAlignment = ;
    self.titleLabel.text = @"1 / 7";
    self.scrollView.contentOffset = CGPointMake(WIDTH, );
    self.scrollView.pagingEnabled = YES;
    self.scrollView.delegate = self;
}
- (void)pageAction:(UIPageControl *)page {
    NSLog(@"%ld", self.pageControl.currentPage);
//    self.scrollView.contentOffset = CGPointMake(WIDTH * page.currentPage + WIDTH, 0);
    [self.scrollView setContentOffset:CGPointMake(WIDTH *page.currentPage + WIDTH, ) animated:YES];
    [self.titleLabel setText:[NSString stringWithFormat:@"%ld / 7", (NSInteger)(page.currentPage + )]];
}
//滑动结束
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{
    if (scrollView.contentOffset.x == ) {
        scrollView.contentOffset = CGPointMake(WIDTH * , );
    }else if(scrollView.contentOffset.x ==  * WIDTH){
        scrollView.contentOffset = CGPointMake(WIDTH , );
    }

     self.pageControl.currentPage = scrollView.contentOffset.x / WIDTH - ;
    [self.titleLabel setText:[NSString stringWithFormat:@"%ld / 7", (NSInteger)(self.pageControl.currentPage + )]];
}
- (void)dealloc{
    [_scrollView release];
    [_pageControl release];
    [super dealloc];
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end