//
// SBCycleScrollView.h
// SBCycleScrollView
//
// Created by luo.h on 15/7/12.
// Copyright (c) 2015年 l.h. All rights reserved.
//

#import
#import "NSTimer+Addition.h"
/** 开启定时器 */
static NSString * const SBCycleScrollViewOpenTimerNotiName = @"BCycleScrollViewOpenTimer";

/** 关闭定时器*/
static NSString * const SBCycleScrollViewCloseTimerNotiName = @"SBCycleScrollViewCloseTimer";

@class SBCycleScrollView;
@protocol SBCycleScrollViewDelegate

• (void)SBCycleScrollView:(SBCycleScrollView *)cycleScrollView didSelectIndex:(NSInteger)index;
  @end

@interface SBCycleScrollView : UIView

-(id)initWithFrame:(CGRect)frame
Duration:(NSTimeInterval)duration
pageControlHeight:(NSInteger)height;

@property (nonatomic,weak) iddelegate;

@property (nonatomic, strong) NSArray *imageArray;
@property (nonatomic, strong) NSArray *titleArray;

@property (nonatomic, strong) UIScrollView *scrollView;
@property (nonatomic, strong) UILabel *titleLabel;

@end

//
// SBCycleScrollView.m
// SBCycleScrollView
//
// Created by luo.h on 15/7/12.
// Copyright (c) 2015年 l.h. All rights reserved.
// 参考 http://www.jianshu.com/p/aa73c273baf2

#import "SBCycleScrollView.h"
#import "SDImageCache.h"

#import "UIImageView+WebCache.h"
#import

#define animationDurations 3 //默认定时器时间间隔

@interface SBCycleScrollView ()
{
NSInteger currentPageIndex; //当前页
NSInteger totalPageCount; //总页码
NSTimeInterval animationDuration_; //时间间隔
}

@property (nonatomic,strong) UIPageControl *pageControl;
@property (nonatomic,strong) NSTimer *animationTimer;//定时器
@property (nonatomic,strong) NSArray *displayViews;//需要显示的视图

@end

@implementation SBCycleScrollView

• (void)dealloc
  {
  _pageControl=nil;
  _scrollView.delegate=nil;
  _scrollView=nil;
  _animationTimer=nil;
  _displayViews=nil;
  [[NSNotificationCenter defaultCenter] removeObserver:self];
  }

-(id)initWithFrame:(CGRect)frame Duration:(NSTimeInterval)duration pageControlHeight:(NSInteger)height;
{
if (self=[super initWithFrame:frame]) {
self.backgroundColor=[UIColor whiteColor];

    //初始化数据，当前图片默认位置是0  
     currentPageIndex=0;  
     animationDuration\_=duration?duration:animationDurations;

    \[self addSubview:self.scrollView\];  
    \[self  addSubview:self.pageControl\];  
     self.pageControl.frame=CGRectMake(0, CGRectGetHeight(self.bounds)-25-height,self.bounds.size.width, 25);

    \[\[NSNotificationCenter defaultCenter\]  addObserver:self selector:@selector (stopMyTimer) name:SBCycleScrollViewCloseTimerNotiName object:nil\];  
    \[\[NSNotificationCenter defaultCenter\]  addObserver:self selector:@selector (openMyTimer) name:SBCycleScrollViewOpenTimerNotiName object:nil\];

 }  
return self;  

}

-(void)stopMyTimer
{
[self.animationTimer pauseTimer];
}

-(void)openMyTimer{
[self.animationTimer resumeTimerAfterTimeInterval:animationDuration_];
}

-(UILabel *)titleLabel
{
if (!_titleLabel) {
_titleLabel=[[UILabel alloc]init];
_titleLabel.font=[UIFont boldSystemFontOfSize:15];
_titleLabel.textColor=[UIColor whiteColor];
_titleLabel.backgroundColor= [[UIColor blackColor] colorWithAlphaComponent:0.7];
_titleLabel.frame=CGRectMake(0, CGRectGetHeight(self.frame)-25,self.bounds.size.width, 25);
[self addSubview:_titleLabel];
}
return _titleLabel;
}

-(UIPageControl *)pageControl
{
if (!_pageControl) {
//分页控件
_pageControl = [[UIPageControl alloc]init];
_pageControl.userInteractionEnabled = NO;
_pageControl.currentPage=0;
_pageControl.currentPageIndicatorTintColor = [UIColor whiteColor];
_pageControl.pageIndicatorTintColor = [UIColor grayColor];
}
return _pageControl;
}

-(UIScrollView *)scrollView
{
if (!_scrollView) {
//滚动视图
_scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, self.bounds.size.width,self.bounds.size.height)];
_scrollView.contentSize = CGSizeMake(self.bounds.size.width*3, 0);
_scrollView.contentOffset = CGPointMake(self.bounds.size.width, 0);
_scrollView.pagingEnabled = YES;
_scrollView.showsHorizontalScrollIndicator = NO;
_scrollView.showsVerticalScrollIndicator = NO;
_scrollView.delegate = self;
}
return _scrollView;
}

-(void)setTitleArray:(NSArray *)titleArray
{
_titleArray=titleArray;
if (_imageArray) {
[self formatTitleLabeltext:titleArray[currentPageIndex]];
}
}

//前面空3格
-(void)formatTitleLabeltext:(NSString *)text
{
self.titleLabel.text=[NSString stringWithFormat:@" %@",text];
}

/**
* 重写图片数组的set方法
*/
-(void)setImageArray:(NSArray *)imageArray
{
if (!imageArray) {
return;
}
_imageArray=imageArray;
totalPageCount=imageArray.count;
currentPageIndex=0;
_pageControl.numberOfPages=totalPageCount;

//开启定时器  
if (\_animationTimer) {  
    \[\_animationTimer invalidate\];  
    \_animationTimer = nil;  
}

 NSMutableArray \*views = \[\[NSMutableArray alloc\] init\];  
for (int i = 0; i < \_imageArray.count; i++) {  
    UIImageView \*imageview = \[\[UIImageView alloc\]initWithFrame:CGRectMake(self.scrollView.frame.size.width \*i, 0,CGRectGetWidth(self.scrollView.frame),CGRectGetHeight(self.scrollView.frame))\];  
    imageview.contentMode =UIViewContentModeScaleAspectFit;  
    imageview.autoresizingMask =UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;

    NSString  \*imageStr=imageArray\[i\];  
    if (\[imageStr hasPrefix:@"http"\]) {  
        \[imageview  sd\_setImageWithURL:\[NSURL URLWithString:imageStr\] placeholderImage:\[UIImage  imageNamed:@"picture\_default"\]\];  
    }else{  
        imageview.image=\[UIImage  imageNamed:imageStr\];  
    }

    imageview.userInteractionEnabled=YES;  
    \[views addObject:imageview\];

    //添加手势  
    UITapGestureRecognizer \*singleTap = \[\[UITapGestureRecognizer alloc\] initWithTarget:self action:@selector(tapImageView:)\];  
    singleTap.numberOfTapsRequired=1;  
    \[imageview addGestureRecognizer:singleTap\];  
}  
  \_displayViews =views;  
//http://www.jianshu.com/p/0f2d127753ba?nomobile=yes  
//判断图片长度是否大于1，如果一张图片不开启定时器 animationTimerScrollImage  
if (\[imageArray count\] > 1) {  
    \[\[NSRunLoop currentRunLoop\] addTimer:self.animationTimer forMode:NSDefaultRunLoopMode\];  
    \[\[NSRunLoop currentRunLoop\] runMode:UITrackingRunLoopMode beforeDate:\[NSDate date\]\];  
}

\[self refreshScrollView\];//刷新显示视图  

}

-(NSTimer *)animationTimer
{
if (!_animationTimer) {
_animationTimer = [NSTimer timerWithTimeInterval:animationDuration_ target:self selector:@selector(animationTimerScrollImage:) userInfo:nil repeats:YES];
}
return _animationTimer;
}

/**
* 刷新显示视图
*/
#pragma mark - Refresh Content View

• (void)refreshScrollView {
  //移除所有子视图
  [self.scrollView.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];
  _pageControl.currentPage= currentPageIndex;//指示点

  NSMutableArray *currentViews = [[NSMutableArray alloc] init];
  [currentViews setArray:[self curDisplayViewsWithCurPage:currentPageIndex]];

  NSInteger count = currentViews.count;
  for (int i = 0;i < count;i ++) {
  UIView *aView = [currentViews objectAtIndex:i];
  aView.frame = CGRectMake(self.bounds.size.width * i,
  0,
  self.bounds.size.width,
  self.bounds.size.height);
  [self.scrollView addSubview:aView];
  }
  [self.scrollView setContentOffset:CGPointMake(self.bounds.size.width, 0.0f)];
  }

/**
* 前 中 后 三个视图
* @param curPage 当前页
*/

• (NSArray *)curDisplayViewsWithCurPage:(NSInteger)curPage {
  NSInteger backPage = [self pageNumber:curPage - 1];
  NSInteger forwardPage = [self pageNumber:curPage + 1];

  NSMutableArray *currentViews = [[NSMutableArray alloc] init];

  [currentViews addObject:_displayViews[backPage]];
  [currentViews addObject:_displayViews[curPage]];
  [currentViews addObject:_displayViews[forwardPage]];
  return currentViews;
  }

• (NSInteger)pageNumber:(NSInteger)num {
  NSInteger temp = 0;
  if (num == -1) {
  temp = totalPageCount - 1;
  }else if (num == totalPageCount) {
  temp = 0;
  }else {
  temp = num;
  }
  return temp;
  }

#pragma mark - UIScrollViewDelegate -

• (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
  {
  [_animationTimer pauseTimer];//拖动停止定时器
  }

• (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate
  {
  [_animationTimer resumeTimerAfterTimeInterval:animationDurations];
  }

#pragma mark - UIScrollViewDelegate

• (void)scrollViewDidScroll:(UIScrollView *)scrollView
  {
  int x = scrollView.contentOffset.x;
  if(x >= (2 * self.scrollView.bounds.size.width)) {
  currentPageIndex = [self pageNumber:currentPageIndex + 1];
  [self refreshScrollView];
  }
  if(x <= 0) {
  currentPageIndex = [self pageNumber:currentPageIndex - 1];
  [self refreshScrollView];
  }
  if (_titleArray) {
  [self formatTitleLabeltext:self.titleArray[currentPageIndex]];
  }
  }

#pragma mark -
#pragma mark - 响应事件

• (void)animationTimerScrollImage:(NSTimer *)timer
  {
  [self.scrollView setContentOffset:CGPointMake(self.bounds.size.width*2, 0) animated:YES];
  }

/** 图片点击事件 */
-(void)tapImageView:(UIImageView *)imageview
{
if ([self.delegate respondsToSelector:@selector(SBCycleScrollView:didSelectIndex:)]) {
[self.delegate SBCycleScrollView:self didSelectIndex:currentPageIndex];
}
}

@end

//
// NSTimer+Ad.h
// HaoLin
//
// Created by l.h on 14-9-16.
// Copyright (c) 2014年 sibu. All rights reserved.
//

#import

@interface NSTimer (Addition)

/**
* 让定时器失效
*/

• (void)invalidateTimer;

/**
* 暂停定时器
*/

• (void)pauseTimer;

/**
* 立即激活定时器
*/

• (void)resumeTimer;

/**
* 固定时间后激活定时器
*
* @param interval 固定时间
*/

• (void)resumeTimerAfterTimeInterval:(NSTimeInterval)interval;

@end

//
// NSTimer+Ad.m
// HaoLin
//
// Created by l.h on 14-9-16.
// Copyright (c) 2014年 sibu. All rights reserved.
//

#import "NSTimer+Addition.h"

@implementation NSTimer (Ad)

/**
* 让定时器失效
*/

• (void)invalidateTimer
  {
  if ([self isValid]) {
  [self invalidate];
  }
  }

/**
* 暂停定时器
*/
-(void)pauseTimer
{
if (![self isValid]) {
return ;
}
[self setFireDate:[NSDate distantFuture]];
}

/**
* 立即激活定时器
*/
-(void)resumeTimer
{
if (![self isValid]) {
return ;
}
[self setFireDate:[NSDate date]];
}

/**
* 固定时间后激活定时器
*
* @param interval 固定时间
*/

• (void)resumeTimerAfterTimeInterval:(NSTimeInterval)interval
  {
  if (![self isValid]) {
  return ;
  }
  [self setFireDate:[NSDate dateWithTimeIntervalSinceNow:interval]];
  }

@end

//
// ViewController.m
// SBCycleScrollView
//
// Created by luo.h on 15/9/6.
// Copyright (c) 2015年 sibu.cn. All rights reserved.
//

#import "ViewController.h"
#import "SBCycleScrollView.h"

#define kScreen_Height ([UIScreen mainScreen].bounds.size.height)
#define kScreen_Width ([UIScreen mainScreen].bounds.size.width)

@interface ViewController ()

@property(nonatomic,strong) SBCycleScrollView *scrollView;

@end

@implementation ViewController

-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:YES];
//开启定时器 DDCycleScrollView自动滚动
[[NSNotificationCenter defaultCenter] postNotificationName:SBCycleScrollViewOpenTimerNotiName object:nil userInfo:nil];
}

-(void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:YES];

//关闭定时器  DDCycleScrollView停止自动滚动  
\[\[NSNotificationCenter  defaultCenter\]  postNotificationName:SBCycleScrollViewCloseTimerNotiName object:nil userInfo:nil\];  

}

• (void)viewDidLoad {
  [super viewDidLoad];
  // Do any additional setup after loading the view, typically from a nib.
  [self.view addSubview:self.scrollView];

  NSArray *images=@[@"1.jpg",@"2.jpg",@"3.jpg",@"4.jpg",@"5.jpg"];
  self.scrollView.imageArray=images;

  /*不设置数据源则不显示*/
  self.scrollView.titleArray=images;

  [NSTimer scheduledTimerWithTimeInterval:8.0 target:self selector:@selector(refreshScrollview) userInfo:nil repeats:YES];
  }

#pragma mark ----刷新Scrollview,一般首页会有下拉刷新功能---
-(void)refreshScrollview
{
NSArray *images=@[@"3.jpg",@"2.jpg",@"5.jpg",@"3.jpg",@"0.jpg"];
self.scrollView.imageArray=images;
self.scrollView.titleArray=images;
}

#pragma ---- banna滚动图片------
-(SBCycleScrollView *)scrollView
{
if (!_scrollView) {
_scrollView=[[SBCycleScrollView alloc]initWithFrame:CGRectMake(0, 20, kScreen_Width, 210*(kScreen_Width/320)) Duration:3 pageControlHeight:20];
_scrollView.delegate=self;
_scrollView.backgroundColor=[UIColor cyanColor];
}
return _scrollView;
}

-(void)SBCycleScrollView:(SBCycleScrollView *)cycleScrollView didSelectIndex:(NSInteger)index
{
NSLog(@"选择index===%ld",index);
}

• (void)didReceiveMemoryWarning {
  [super didReceiveMemoryWarning];
  // Dispose of any resources that can be recreated.
  }

@end

Demo:https://files.cnblogs.com/files/sixindev/SBCycleScrollView.zip