新闻客户端首页图片无限循环滚动展示(可点击触发不同事件)初步封装IOS

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此类继承于UIView.引入头文件,初始化对象,设置代理,只需要传入一个盛放图片的数组即可.

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以下为.h文件

#import <UIKit/UIKit.h>@protocol ImageScrollViewDelegate <NSObject>- (void)tapImageAtIndex:(int)index;@end@interface ImageScrollView : UIView<UIScrollViewDelegate,UIGestureRecognizerDelegate>@property(nonatomic,assign)id<ImageScrollViewDelegate>delegate;- (id)initWithFrame:(CGRect)frame imageDataArr:(NSArray *)imageDataArr;- (void)setPageControlColor:(UIColor *)color;//外界传颜色参数@end

以下为.m文件

#import "ImageScrollView.h"@interface ImageScrollView (){    int imageHight;        int imageWidth;        int imageCount;}@property(nonatomic,retain)UIScrollView *imageScrollView;@property(nonatomic,strong)UIPageControl *pageNumber;@property(nonatomic,retain)NSArray *imageArray;@end@implementation ImageScrollView- (id)initWithFrame:(CGRect)frame imageDataArr:(NSArray *)imageDataArr{    self = [super initWithFrame:frame];    if (self) {        imageHight = self.frame.size.height-20;        imageWidth = self.frame.size.width;        self.imageArray = [NSArray arrayWithArray:imageDataArr];        imageCount = [self.imageArray count];        [self setupUI];    }    return self;}- (void)setPageControlColor:(UIColor *)color {    self.pageNumber.currentPageIndicatorTintColor = color;}- (void)setupUI{    [self setupScrollView];        [self setupPageControl];}- (void)setupScrollView{    self.imageScrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, imageWidth, imageHight)];    _imageScrollView.bounces = NO;    _imageScrollView.pagingEnabled = YES;    _imageScrollView.contentOffset = CGPointMake(imageWidth, 0);    _imageScrollView.contentSize = CGSizeMake(imageWidth*(imageCount+2),imageHight);    _imageScrollView.showsVerticalScrollIndicator =NO;    _imageScrollView.showsHorizontalScrollIndicator = NO;    _imageScrollView.userInteractionEnabled = YES;    _imageScrollView.backgroundColor = [UIColor redColor];    _imageScrollView.delegate = self;    [self addSubview:_imageScrollView];    //加载图片    for (int i = 0; i<imageCount+2; i++) {        //加载每一张图片        if (i == 0) {            //实际上是最后一个位置显示的是第一个图片            UIImageView *imageView = [[UIImageView alloc] initWithImage:(UIImage *)[_imageArray objectAtIndex:0]];            imageView.frame = CGRectMake(imageWidth*(imageCount+1), 0, imageWidth, imageHight);            imageView.userInteractionEnabled = YES;            //创建手势            UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapImage)];            [imageView addGestureRecognizer:tap];            [_imageScrollView addSubview:imageView];        }else if (i == imageCount +1){            //实际上是第一个位置显示的是最后一个图片            UIImageView *imageView = [[UIImageView alloc] initWithImage:(UIImage *)[_imageArray objectAtIndex:(imageCount - 1)]];            imageView.frame = CGRectMake(0, 0, imageWidth, imageHight);            imageView.userInteractionEnabled = YES;            [_imageScrollView addSubview:imageView];            //创建手势            UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapImage)];            [imageView addGestureRecognizer:tap];            [_imageScrollView addSubview:imageView];        }else if (0< i <=imageCount){                //正常的图片显示            UIImageView *imageView = [[UIImageView alloc] initWithImage:(UIImage *)[_imageArray objectAtIndex:i-1]];            imageView.frame = CGRectMake(imageWidth*i, 0, imageWidth, imageHight);            imageView.userInteractionEnabled = YES;            [_imageScrollView addSubview:imageView];            //创建手势            UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapImage)];            [imageView addGestureRecognizer:tap];            [_imageScrollView addSubview:imageView];    }    }}- (void)tapImage{    if (self.delegate != nil) {        [self.delegate tapImageAtIndex:_pageNumber.currentPage];    }}- (void)setupPageControl{    //翻页控件    _pageNumber = [[UIPageControl alloc]initWithFrame:CGRectMake(imageWidth - 70, imageHight, 70, 20)];    _pageNumber.numberOfPages = imageCount;    _pageNumber.currentPage = 0;    [_pageNumber addTarget:self action:@selector(pageAction) forControlEvents:UIControlEventTouchUpInside];    _pageNumber.pageIndicatorTintColor = [UIColor grayColor];//选择的点的颜色    _pageNumber.currentPageIndicatorTintColor = [UIColor blackColor];//已选择的点的颜色    [self addSubview:_pageNumber];}-(void)pageAction{    int page = _pageNumber.currentPage;    [_imageScrollView setContentOffset:CGPointMake(imageWidth * (page+1), 0)];}#pragma scrollView代理方法- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{    int currentPage = (_imageScrollView.contentOffset.x - _imageScrollView.frame.size.width                       / ([_imageArray count]+2)) / _imageScrollView.frame.size.width + 1;    //NSLog(@"%d",currentPage);    if (currentPage==0) {        [_imageScrollView scrollRectToVisible:CGRectMake(imageWidth*imageCount, 0, imageWidth, imageHight) animated:NO];    }    else if (currentPage==([_imageArray count]+1)) {        //如果是最后+1,也就是要开始循环的第一个        [_imageScrollView scrollRectToVisible:CGRectMake(imageWidth, 0, imageWidth, imageHight) animated:NO];    }}- (void)scrollViewDidScroll:(UIScrollView *)sender{    _pageNumber.currentPage = _imageScrollView.contentOffset.x/imageWidth-1;}@end

http://download.csdn.net/detail/u013082522/6945667  源代码示例如下