1 // 2 // ViewController.m 3 // 分屏导航 4 // 5 // Created by wky on 15/10/2017. 6 // Copyright © 2017 vector. All rights reserved. 7 // 8 9 #import "ViewController.h" 10 11 @interface ViewController () 12 @property (weak, nonatomic) IBOutlet UIScrollView *scrollView; 13 @property (weak, nonatomic) IBOutlet UIPageControl *pageControl; 14 15 16 - (IBAction)changePage:(id)sender; 17 18 @property (strong,nonatomic) UIImageView* imageView1; 19 @property (strong,nonatomic) UIImageView* imageView2; 20 @property (strong,nonatomic) UIImageView* imageView3; 21 22 @end 23 24 @implementation ViewController 25 26 - (void)viewDidLoad { 27 [super viewDidLoad]; 28 // Do any additional setup after loading the view, typically from a nib. 29 30 self.scrollView.delegate = self; 31 32 self.scrollView.frame = self.view.frame; 33 34 CGFloat width = self.view.frame.size.width; 35 36 CGFloat height = self.view.frame.size.height; 37 38 self.scrollView.contentSize = CGSizeMake(width*3,height); 39 40 41 //1 42 self.imageView1 = [[UIImageView alloc]initWithFrame:CGRectMake(0,0,320,480)]; 43 44 self.imageView1.image = [UIImage imageNamed:@"1.png"]; 45 46 [self.scrollView addSubview:self.imageView1]; 47 48 //2 49 self.imageView2 = [[UIImageView alloc]initWithFrame:CGRectMake(320,0,320,480)]; 50 51 self.imageView2.image = [UIImage imageNamed:@"2.png"]; 52 53 [self.scrollView addSubview:self.imageView2]; 54 55 //3 56 self.imageView3 = [[UIImageView alloc]initWithFrame:CGRectMake(320*2,0,320,480)]; 57 58 self.imageView3.image = [UIImage imageNamed:@"3.png"]; 59 60 [self.scrollView addSubview:self.imageView3]; 61 62 63 64 65 66 } 67 ／／在头文件中继承一下UIScrollViewDelegate 68 -(void) scrollViewDidScroll:(UIScrollView *)scrollView 69 { 70 CGPoint offset = scrollView.contentOffset; 71 72 self.pageControl.currentPage= offset.x/320; 73 74 } 75 76 77 78 79 - (void)didReceiveMemoryWarning { 80 [super didReceiveMemoryWarning]; 81 // Dispose of any resources that can be recreated. 82 } 83 84 85 - (IBAction)changePage:(id)sender { 86 87 [UIView animateWithDuration:0.3f animations:^{ 88 NSInteger whichPage = self.pageControl.currentPage; 89 self.scrollView.contentOffset = CGPointMake(320*whichPage, 0); 90 }]; 91 92 93 } 94 @end