- (void)viewDidLoad {
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width,240)];
[self.view addSubview:view];
//创建实例化UIScrollerView
imageScrollerview = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0,[UIScreenmainScreen].bounds.size.width, 240)];
imageScrollerview.contentSize = CGSizeMake(imageScrollerview.frame.size.width*6,0); //必须设置的，滚动范围
imageScrollerview.scrollEnabled = YES; //是否支持滚动
imageScrollerview.pagingEnabled = YES; //整页滚动
imageScrollerview.delegate = self;
imageScrollerview.showsVerticalScrollIndicator = false; //隐藏滑轮
imageScrollerview.showsHorizontalScrollIndicator = false;
[view addSubview:imageScrollerview];
for (int i = 0; i<6; i++) {
NSString *str = [NSString stringWithFormat:@"%d.jpg",i];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake([UIScreen mainScreen].bounds.size.width*i, 0,[UIScreen mainScreen].bounds.size.width, imageScrollerview.frame.size.height)];
imageView.image = [UIImageimageNamed:str];
[imageScrollerview addSubview:imageView];
}
//设置起始位置 setContentOffset设置位置的，固定位置
[imageScrollerview setContentOffset:CGPointMake([UIScreenmainScreen].bounds.size.width, 0)];
//UIPageControl初始化
pageControl = [[UIPageControlalloc] initWithFrame:CGRectMake([UIScreenmainScreen].bounds.size.width-100,imageScrollerview.frame.size.height-20, 100, 20)];
pageCOntrol.currentPage = 0; //设置当前页
pageControl.numberOfPages = 4;
[view addSubview:pageControl];
//计时器
NSTimer *time = [NSTimer scheduledTimerWithTimeInterval:3.0target:selfselector:@selector(updateTime:) userInfo:nilrepeats:YES];
[[NSRunLoop currentRunLoop] addTimer:time forMode:NSDefaultRunLoopMode];
}
//计时器，3s一次
-(void) updateTime:(id) sender
{
CGPoint point = imageScrollerview.contentOffset;
if(point.x == [UIScreen mainScreen].bounds.size.width*4)
{
[imageScrollerview setContentOffset:CGPointMake(0, 0) animated:NO];
imageScrollerview.frame = CGRectMake(0, 0, [UIScreenmainScreen].bounds.size.width, 240); //防止位置跳动
[imageScrollerviewscrollRectToVisible:CGRectMake([UIScreenmainScreen].bounds.size.width, 0, [UIScreenmainScreen].bounds.size.width, 240) animated:YES];
pageControl.currentPage = imageScrollerview.contentOffset.x/[UIScreenmainScreen].bounds.size.width;
}
else
{
[imageScrollerview scrollRectToVisible:CGRectMake(point.x + [UIScreenmainScreen].bounds.size.width, 0, [UIScreenmainScreen].bounds.size.width, 240) animated:YES]; //移动设置
pageControl.currentPage = imageScrollerview.contentOffset.x/[UIScreen mainScreen].bounds.size.width;
}
}
#pragma mark UIScrollerViewDelegate
-(void) scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
if (imageScrollerview.contentOffset.x == 0)
{
[imageScrollerview setContentOffset:CGPointMake([UIScreenmainScreen].bounds.size.width*4, 0) animated:NO];
imageScrollerview.frame = CGRectMake(0, 0,[UIScreen mainScreen].bounds.size.width, 240);//防止位置跳动
}
elseif (imageScrollerview.contentOffset.x == [UIScreen mainScreen].bounds.size.width*5)
{
[imageScrollerview setContentOffset:CGPointMake([UIScreen mainScreen].bounds.size.width, 0) animated:NO];
imageScrollerview.frame = CGRectMake(0, 0,[UIScreen mainScreen].bounds.size.width, 240);//防止位置跳动
}
pageControl.currentPage = imageScrollerview.contentOffset.x/[UIScreen mainScreen].bounds.size.width - 1;
}