/* * * 照片浏览的下标 1/8 * */ #import <UIKit/UIKit.h> @interface PageLabel : UILabel @property (nonatomic,assign)NSInteger numberOfPages; @property (nonatomic,assign)NSInteger currentPage; /* * * page改变 */ - ( void)labelText; @end
#import " PageLabel.h " @implementation PageLabel - (instancetype)init { self = [super init]; if (self) { self.textColor = [UIColor whiteColor]; self.textAlignment = NSTextAlignmentCenter; } return self; } - ( void)labelText { if (_numberOfPages > 0) { self.text = [NSString stringWithFormat: @" %ld/%ld ",_currentPage+ 1,_numberOfPages]; } else { self.text = nil; } } @end
也可以用UIPageControl也差不多
图片浏览控制器
CycleScrollViewController.h
#import <UIKit/UIKit.h> @protocol CycleScrollViewDelegate <NSObject> - ( void)updateui; /* * * 删除 * * @param array 返回改变后的数组 */ - ( void)cycleScrollViewDeletItem:(NSArray *)array; @end @interface CycleScrollViewController : UIViewController @property (nonatomic,assign) id<CycleScrollViewDelegate> delegate; /* * * 初始化 * * @param mixId 数组（名字或者image） * @param index 下标 * @param myself 是不是自己（如果是自己久传入image不是的话就传入网络地址） * * @return */ - (instancetype)initWithMixids:(NSArray *)mixId currentIndex:( int)index myself:(BOOL)myself; @end
CycleScrollViewController.m
// // ViewController.m // test // // Created by 张鹏 on 14-4-30. // Copyright (c) 2014年 rimi. All rights reserved. // #import " CycleScrollViewController.h " #import " UIImageView+WebCache.h " #import " SDImageCache.h " #import " PageLabel.h " @interface CycleScrollViewController () <UIScrollViewDelegate,UIAlertViewDelegate> { NSMutableArray *_imageNames; NSMutableArray *_imageViews; UIScrollView *_scrollView; UIPageControl *_pageControl; NSInteger _currentPageIndex; PageLabel *_labelText; } @property (nonatomic,strong) UITapGestureRecognizer *singleTap; @property (nonatomic,strong) UITapGestureRecognizer *doubleTap; @property (nonatomic,assign) CGFloat zoomScale; @property (nonatomic,strong) UIDynamicAnimator *animator; @property (nonatomic) BOOL myself; @property (nonatomic) BOOL deleted; - ( void)initializeUserInterface; // - (void)updateScrollViewWithContentOffset:(CGPoint)contentOffset; // - (NSInteger)actualIndexWithIndex:(NSInteger)index; @end @implementation CycleScrollViewController - (instancetype)initWithMixids:(NSArray *)mixId currentIndex:( int)index myself:(BOOL)myself{ self = [super init]; if (self) { _myself=myself; _deleted=NO; _imageNames = [NSMutableArray arrayWithArray:mixId]; _imageViews = [NSMutableArray array]; _currentPageIndex = index; } return self; } - ( void)dealloc { _imageNames = nil; _imageViews = nil; } - ( void)viewDidLoad { [super viewDidLoad]; [self initializeUserInterface]; } - ( void)initializeUserInterface { self.view.backgroundColor = [UIColor blackColor]; self.automaticallyAdjustsScrollViewInsets = NO; _scrollView = [[UIScrollView alloc] initWithFrame:CGRectInset(self.view.bounds, - 4, 0)]; _scrollView.contentSize = CGSizeMake(CGRectGetWidth(_scrollView.bounds) * _imageNames.count, CGRectGetHeight(_scrollView.bounds)); _scrollView.contentOffset = CGPointMake(CGRectGetWidth(_scrollView.bounds)*(_currentPageIndex), 0); _scrollView. delegate = self; _scrollView.pagingEnabled = YES; _scrollView.bouncesZoom = YES; _scrollView.bounces = YES; _scrollView.canCancelContentTouches = YES; _scrollView.delaysContentTouches = YES; _scrollView.showsHorizontalScrollIndicator = NO; _scrollView.showsVerticalScrollIndicator = NO; if (_imageNames.count == 1) { _scrollView.scrollEnabled = NO; } [self.view addSubview:_scrollView]; for ( int i = 0; i < _imageNames.count; i++) { UIScrollView *scrollView = [[UIScrollView alloc] init]; scrollView.bounds = self.view.frame; scrollView.center = CGPointMake(CGRectGetWidth(_scrollView.bounds) / 2 + CGRectGetWidth(_scrollView.bounds) * i, CGRectGetHeight(_scrollView.bounds) / 2); scrollView.contentSize = self.view.frame.size; scrollView. delegate = self; scrollView.maximumZoomScale = 2.0; scrollView.minimumZoomScale = 1.0; scrollView.zoomScale = 1.0; scrollView.showsHorizontalScrollIndicator = NO; scrollView.showsVerticalScrollIndicator = NO; [_scrollView addSubview:scrollView]; UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake( 0, 0, scrollView.frame.size.width, scrollView.frame.size.height)]; imageView.contentMode = UIViewContentModeScaleAspectFit; imageView.layer.masksToBounds = YES; imageView.userInteractionEnabled = YES; [_imageViews addObject:imageView]; if (_imageNames) { if (_myself) { imageView.image = _imageNames[i]; } else { [imageView sd_setImageWithURL:[NSURL URLWithString:_imageNames[i]] placeholderImage:[UIImage imageNamed: @" four_contentimage "] options:SDWebImageCacheMemoryOnly completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) { }]; } } [scrollView addSubview:imageView]; self.singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTap:)]; self.singleTap.numberOfTapsRequired = 1; [imageView addGestureRecognizer:self.singleTap]; self.doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doubleTap:)]; self.doubleTap.numberOfTapsRequired = 2; [imageView addGestureRecognizer:self.doubleTap]; [self.singleTap requireGestureRecognizerToFail:self.doubleTap]; } _labelText = [[PageLabel alloc]init]; _labelText.bounds = CGRectMake( 0, 0, 320, 20); _labelText.center = CGPointMake(CGRectGetMidX(self.view.bounds), CGRectGetMaxY(self.view.bounds) - 50); if (_imageNames.count > 1) { _labelText.numberOfPages = [_imageNames count]; } else { _labelText.numberOfPages = 0; } [self.view addSubview:_labelText]; _labelText.currentPage = _currentPageIndex; [_labelText labelText]; if (_myself) { UIImageView *img=[[UIImageView alloc] initWithFrame:CGRectMake((ScreenWidth- 20)/ 2, 40, 20, 20)]; img.image=[UIImage imageNamed: @" ic_delete "]; UIButton *delbtn=[[UIButton alloc] initWithFrame:CGRectMake( 0, 40, ScreenWidth, 30)]; delbtn.backgroundColor=[UIColor clearColor]; [delbtn addTarget:self action:@selector(ButtonPressed) forControlEvents:UIControlEventTouchDown]; [self.view addSubview:img]; [self.view addSubview:delbtn]; } self.animator = [[UIDynamicAnimator alloc] initWithReferenceView:self.view]; } - ( void)popLastViewController { [self.navigationController popViewControllerAnimated:YES]; [self.navigationController setNavigationBarHidden:NO animated:YES]; } - ( void)ButtonPressed{ UIAlertView *view=[[UIAlertView alloc] initWithTitle:nil message: @" 确定要删除该照片? " delegate:self cancelButtonTitle: @" 取消 " otherButtonTitles: @" 确定 ", nil]; [view show]; } #pragma mark - tapGestureEvent - ( void)singleTap:(UITapGestureRecognizer *)tap { if (_deleted) { [_delegate updateui]; } [self.view.window.rootViewController dismissViewControllerAnimated:YES completion:nil]; } - ( void)doubleTap:(UITapGestureRecognizer *)tap { UIScrollView *scrollView = (UIScrollView *)tap.view.superview; NSLog( @" doubleTap "); // if (_isDetailShown) { // return; // } if (scrollView.zoomScale == scrollView.minimumZoomScale) { // Zoom in CGPoint center = [tap locationInView:scrollView]; CGSize size = CGSizeMake(scrollView.bounds.size.width / scrollView.maximumZoomScale, scrollView.bounds.size.height / scrollView.maximumZoomScale); CGRect rect = CGRectMake(center.x - (size.width / 2.0), center.y - (size.height / 2.0), size.width, size.height); [scrollView zoomToRect:rect animated:YES]; } else { // Zoom out [scrollView zoomToRect:scrollView.bounds animated:YES]; } } #pragma mark - UIScrollViewDelegate methods - (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView { for (UIView *v in scrollView.subviews){ return v; } return nil; } #pragma mark - <UIScrollViewDelegate> - ( void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView { int index= scrollView.contentOffset.x/self.view.bounds.size.width; _currentPageIndex=index; [_labelText setCurrentPage:index]; [_labelText labelText]; } -( void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{ if (buttonIndex== 1) { [self.view.window.rootViewController dismissViewControllerAnimated:YES completion:nil]; NSLog( @" %ld ",_currentPageIndex); for ( int i = 0; i < _imageNames.count; i ++) { if (i == _currentPageIndex) { [_imageNames removeObjectAtIndex:i]; } } if ([_delegate respondsToSelector:@selector(cycleScrollViewDeletItem:)]) { [_delegate cycleScrollViewDeletItem:_imageNames]; } } } @end