文件名称:
UIScrollView定时滚动和循环滚动，可点击图片和PageController
开发工具:
文件大小: 67kb
下载次数: 0
上传时间: 2014-07-02
详细说明： 定时滚动和循环滚动，可点击图片和PageController #import "ASIFormDataRequest.h" #import "GWPublicClass.h" @interface ViewController () @end @implementation ViewController { UIScrollView * headScrollView; UIPageControl * pageControl; NSArray * colorArray; NSTimer * myTimer; } - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; if (self) { // Custom initi alization } return self; } #pragma UIScrollView delegate -(void)scrollToNextPage:(id)sender { int pageNum = pageControl.currentPage; CGSize viewSize = headScrollView.frame.size; CGRect rect = CGRectMake((pageNum+2)*viewSize.width, 0, viewSize.width, viewSize.height); [headScrollView scrollRectToVisible:rect animated:NO]; pageNum++; if (pageNum == colorArray.count) { CGRect newRect=CGRectMake(viewSize.width, 0, viewSize.width, viewSize.height); [headScrollView scrollRectToVisible:newRect animated:NO]; } } -(void)scrollViewDidScroll:(UIScrollView *)scrollView { CGFloat pageWidth = headScrollView.frame.size.width; int currentPage = floor((headScrollView.contentOffset.x-pageWidth/2)/pageWidth)+1; if (currentPage == 0) { pageControl.currentPage = colorArray.count-1; }else if(currentPage == colorArray.count+1){ pageControl.currentPage=0; } pageControl.currentPage = currentPage-1; } -(void)scrollViewWillBeginDragging:(UIScrollView *)scrollView { [myTimer invalidate]; } -(void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate { myTimer=[NSTimer scheduledTimerWithTimeInterval:2.0f target:self selector:@selector(scrollToNextPage:) userInfo:nil repeats:YES]; } -(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView { CGFloat pageWidth = headScrollView.frame.size.width; CGFloat pageHeigth = headScrollView.frame.size.height; int currentPage=floor((headScrollView.contentOffset.x-pageWidth/2)/pageWidth)+1; NSLog(@"the current offset==%f",headScrollView.contentOffset.x); NSLog(@"the current page==%d",currentPage); if (currentPage == 0) { [headScrollView scrollRectToVisible:CGRectMake(pageWidth*colorArray.count, 0, pageWidth, pageHeigth) animated:NO]; pageControl.currentPage = colorArray.count-1; NSLog(@"pageControl currentPage==%d",pageControl.currentPage); NSLog(@"the last image"); return; }else if(currentPage == [colorArray count]+1){ [headScrollView scrollRectToVisible:CGRectMake(pageWidth, 0, pageWidth, pageHeigth) animated:NO]; pageControl.currentPage=0; NSLog(@"pageControl currentPage==%d",pageControl.currentPage); NSLog(@"the first image"); return; } pageControl.currentPage=currentPage-1; NSLog(@"pageControl currentPage==%d",pageControl.currentPage); } - (void)pageTurn:(UIPageControl *)sender { int pageNum = pageControl.currentPage; CGSize viewSize = headScrollView.frame.size; [headScrollView setContentOffset:CGPointMake((pageNum+1)*viewSize.width, 0)]; NSLog(@"myscrollView.contentOffSet.x==%f",headScrollView.contentOffset.x); NSLog(@"pageControl currentPage==%d",pageControl.currentPage); [myTimer invalidate]; } - (void)handleTapGesture:(UITapGestureRecognizer*)gesture { NSLog(@"UITapGesture被调用了%d",gesture.view.tag); // ... } - (void)viewDidLoad { [super viewDidLoad]; colorArray = @[[UIColor redColor],[UIColor greenColor],[UIColor blueColor]]; headScrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 80, 320, 200)]; headScrollView.backgroundColor = [UIColor blackColor]; [self.view addSubview:headScrollView]; CGFloat Width= 320; CGFloat Height= 200; UIImageView * firstImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, Width, Height)]; firstImageView.userInteractionEnabled = YES; firstImageView.tag = 50+colorArray.count-1; firstImageView.backgroundColor = colorArray[colorArray.count-1]; [headScrollView addSubview:firstImageView]; UITapGestureRecognizer * gestd = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTapGesture:)]; [firstImageView addGestureRecognizer:gestd]; for (int i=0; i
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