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(PS：IOS新手，写的东西难免有错，请大家指正)

1.自定义一个类，用于展现轮播图片，该类叫IKEDWheelPic，该类实现了UIScrollView的继承，其中pics存的都IKEDItemInfo是类型的，暂时如下

////  IKEDWheelPic.h//  lunbo////  Created by apple on 14-2-26.//  Copyright (c) 2014年 com.tyust. All rights reserved.//#import 
   
    @interface IKEDWheelPic : UIScrollView{    //轮播里面放的就是一个一个的按钮，按钮上填充一个UIImageView    UIButton *pic;    BOOL flag;    int scrollTopicFlag;    //用于处理时间的对象    NSTimer *scrollTimer;    int currentPage;        CGSize imageSize;    UIImage *image;}@property(nonatomic,strong)NSArray * pics;@end
   

////  IKEDWheelPic.m//  lunbo////  Created by apple on 14-2-26.//  Copyright (c) 2014年 com.tyust. All rights reserved.//#import "IKEDWheelPic.h"#import "IKEDItemInfo.h"@implementation IKEDWheelPic- (id)initWithFrame:(CGRect)frame{    self = [super initWithFrame:frame];    if (self) {               self.frame = frame;        [self setSelfProperties];            }    return self;}-(void)drawRect:(CGRect)rect{    [self setSelfProperties];}-(void)setSelfProperties{    self.pagingEnabled = YES;    self.scrollEnabled = YES;    self.showsHorizontalScrollIndicator = NO;    self.showsVerticalScrollIndicator = NO;    self.backgroundColor = [UIColor whiteColor];    //实现ScrollowView的delegate方法    self.delegate = self;}-(void)showPic{    NSMutableArray *tempImageArray = [[NSMutableArray alloc]init];    //将传过来的数组最后的一张图片纺织再第一张的前面    [tempImageArray addObject:[self.pics lastObject]];        for (id obj in self.pics) {        [tempImageArray addObject:obj];    }    [tempImageArray addObject:[self.pics objectAtIndex:0]];        //清空原来的数组    self.pics = Nil;    //将可变数组的内容付给原来的数组    self.pics = tempImageArray;        //关键的地方    int i = 0;        for(id obj in self.pics)    {        //每次调用会清空原来的展现的Button        pic = nil;                //自定义Button        pic = [UIButton buttonWithType:UIButtonTypeCustom];            //UIViewContentModeTop:The option to center the content aligned at the top in the view’s bounds.        pic.imageView.contentMode = UIViewContentModeTop;                //根据图片的次序来设置Button的位置        [pic setFrame:CGRectMake(i*self.frame.size.width,0, self.frame.size.width, self.frame.size.height)];                      UIImageView * tempImage = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, pic.frame.size.width, pic.frame.size.height)];        tempImage.contentMode = UIViewContentModeScaleAspectFill;        [tempImage setClipsToBounds:YES];                [tempImage setImage:[obj objectForKey:@"pic"]];                [pic addSubview:tempImage];        [pic setBackgroundColor:[UIColor grayColor]];        pic.tag = i;        [self addSubview:pic];                //用于展示标签栏        UILabel * title = [[UILabel alloc]initWithFrame:CGRectMake(i*self.frame.size.width, self.frame.size.height-30, self.frame.size.width,30)];                [title setBackgroundColor:[UIColor blackColor]];                [title setAlpha:.7f];        [title setText:[NSString stringWithFormat:@" %@",[obj objectForKey:@"title"]]];                [title setTextColor:[UIColor whiteColor]];        [title setFont:[UIFont fontWithName:@"Helvetica" size:12]];        [self addSubview:title];        i ++;     }        //scrollow view的大小      [self setContentSize:CGSizeMake(self.frame.size.width*[self.pics count], self.frame.size.height)];         [self setContentOffset:CGPointMake(self.frame.size.width, 0) animated:NO];}- (void)scrollViewDidScroll:(UIScrollView *)scrollView{        CGFloat Width=self.frame.size.width;        if (scrollView.contentOffset.x == self.frame.size.width) {        flag = YES;    }    if (flag) {        if (scrollView.contentOffset.x <= 0) {            [self setContentOffset:CGPointMake(Width*([self.pics count]-2), 0) animated:NO];        }else if (scrollView.contentOffset.x >= Width*([self.pics count]-1)) {            [self setContentOffset:CGPointMake(Width*1, 0) animated:NO];        }    }    currentPage = scrollView.contentOffset.x/self.frame.size.width-1;}@end

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