UIScrollView 实现广告栏的无限轮播（可设置自动播放时间）

有时需要设置一个广告栏，那么用UIScrollView是再好不过了，直接上代码

1.首先在.h里面设置属性

//

// FirstViewController.h

// CyberGo

//

// Created by chenzhizheng on 15/2/6.

// Copyright (c) 2015年 KLH. All rights reserved.

//

#import <UIKit/UIKit.h>

@interface FirstViewController :
UIViewController<UIScrollViewDelegate>
{
int PageNum;

BOOL Tend;

}

@property (nonatomic,strong)
UIScrollView * home_images;

@property (nonatomic,strong)
UICollectionView * home_collection;

@property (nonatomic,strong)
UIPageControl * home_page;

@end

2.在.m里面实现方法

//

// FirstViewController.m

// CyberGo

//

// Created by chenzhizheng on 15/2/6.

// Copyright (c) 2015年 KLH. All rights reserved.

//

#import "FirstViewController.h"

#import "Common.h"

@interface
FirstViewController ()

@end

@implementation FirstViewController

- (void)viewDidLoad {

[super
viewDidLoad];

self.view.backgroundColor
= [UIColor
colorWithPatternImage:[UIImage
imageNamed:@"底板.jpg"]];

[self.view
addSubview:[self
home_images]];

[self.view
addSubview:[self
home_page]];

[self.view
addSubview:[self
home_collection]];

}

这里是UIScrollView的getter方法

-(UIScrollView *)home_images

{

if (!_home_images) {



_home_images = [[UIScrollView
alloc] initWithFrame:CGRectMake(0,
0, WIDTH,
100)];

_home_images.indicatorStyle =
UIScrollViewIndicatorStyleDefault;//设置滚动条风格

_home_images.showsHorizontalScrollIndicator =
NO;//设置是否显示横向滚动条

_home_images.showsVerticalScrollIndicator =
NO;//设置是否显示纵向滚动条

_home_images.bounces =
YES;//是否具有反弹效果

_home_images.pagingEnabled =
YES;//是否可滑动翻页

_home_images.contentSize =
CGSizeMake(WIDTH *
3, 0);//设置UIScrollView的大小（3张图片大小）

_home_images.delegate =
self;//设置代理

//视图滚动循环

for (int i =0; i <
3; i++) {

UIImageView * view = [[UIImageView
alloc] initWithFrame:CGRectMake(WIDTH * i,
0, WIDTH,
100)];

view.image = [UIImage
imageNamed:[NSString
stringWithFormat:@"滚动图%d.jpg",i+1]];

[_home_images
addSubview:view];

}

//设置定时器

[NSTimer
scheduledTimerWithTimeInterval:1.0f
target:self
selector:@selector(autoScrollimages:)
userInfo:nil
repeats:YES];



}

return
_home_images;

}

-(void)autoScrollimages:(id)sender

{

if (PageNum %
3 ==
0) {

if (!Tend) {

self.home_page.currentPage++;

if (self.home_page.currentPage ==
self.home_page.numberOfPages -
1) {

Tend =
YES;

}

}else{

self.home_page.currentPage --;

if (self.home_page.currentPage ==
0) {

Tend =
NO;

}

}

[UIView
animateWithDuration:1.0f

animations:^{

self.home_images.contentOffset =
CGPointMake(self.home_page.currentPage *
320, 0);

}];

}

PageNum ++;

}

//翻页控制显示器

-(UIPageControl *)home_page

{

if (!_home_page) {

//三个点的位置及大小

_home_page = [[UIPageControl
alloc] initWithFrame:CGRectMake(WIDTH *
0.75, 100 *
0.9, 40,
5)];

_home_page.numberOfPages =
3;

_home_page.currentPage = 0;//默认选中第一张展示



}

return
_home_page;

}

- (void)didReceiveMemoryWarning {

[super
didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

@end

照着敲run起来就好了