[置顶] ios 无限循环翻页源码例子

原创文章，转载请注明出处：http://blog.csdn.net/donny_zhang/article/details/9923053

demo功能：ios 无限循环翻页源码例子。iphone 6.1测试通过。

demo说明：MyScrollView.m中又主要的页面控制代码。使用 UIScrollView和 UIPageControl控件。通过在滚动结束时设置uiscrollview的内容起始坐标来实现无限制循环。

demo截屏：

demo主要代码：MyScrollView.m

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code
        
        //UIScrollView
        carScroll=[[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 1024, 748)];
		[carScroll setContentSize:CGSizeMake(1024*(TOTLE_PAGE+1), 100)];
		[carScroll setShowsHorizontalScrollIndicator:NO];
		[carScroll setPagingEnabled:YES];
		[carScroll setDelegate:self];
        
		for(int i=0; i<TOTLE_PAGE+1; i++) {
            UIImageView *scrollImg = [[UIImageView alloc] initWithImage:[UIImage imageNamed:[NSString stringWithFormat:@"%d.png",i]]] ;
            scrollImg.frame = CGRectMake(1024*i, 0, 1024, 748);
            scrollImg.tag = 2220+i;
            scrollImg.userInteractionEnabled = YES;
            UITapGestureRecognizer *tapGestrue = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapAction:)];
            [scrollImg addGestureRecognizer:tapGestrue];
            [tapGestrue release], tapGestrue = nil;
            [carScroll addSubview:scrollImg];
            [scrollImg release], scrollImg = nil;
		}
		[self addSubview:carScroll];
		
		
		//carPageControl
		carPageControl=[[UIPageControl alloc] initWithFrame:CGRectMake(380, 700, 350, 26)];
		[carPageControl setNumberOfPages:TOTLE_PAGE];
		[carPageControl addTarget:self action:@selector(changePage:) forControlEvents:UIControlEventValueChanged];
        [self addSubview:carPageControl];
        
    }
    return self;
}

#pragma mark - 
#pragma ScrollView Delegate

-(void) scrollViewDidScroll:(UIScrollView *)scrollView 
{
    int offsetX = scrollView.contentOffset.x;
	if(offsetX < 0){
		[scrollView setContentOffset:CGPointMake(1024*TOTLE_PAGE, 0)];
	}
	if(offsetX > 1024*TOTLE_PAGE){
		[scrollView setContentOffset:CGPointMake(0, 0)];
	}
}

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
    int offsetX = scrollView.contentOffset.x;
	if(offsetX/1024 == TOTLE_PAGE){
		[scrollView setContentOffset:CGPointMake(0, 0)];
        carPageControl.currentPage = 0;
	}
	if(offsetX%1024 == 0){
		[carPageControl setCurrentPage:scrollView.contentOffset.x/1024];
	}
}

demo下载地址：http://download.csdn.net/detail/donny_zhang/5914159