iOS UIScrollView滚动视图/无限循环滚动/自动滚动

最新推荐文章于 2024-09-03 10:09:35 发布

xcp_123

最新推荐文章于 2024-09-03 10:09:35 发布

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分类专栏： iOS 文章标签： ios uiscrollview

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<UIScrollViewDelegate>

#define WIDTH [[UIScreen mainScreen] bounds].size.width

#define HEIGHT [[UIScreen mainScreen] bounds].size.height

@property (nonatomic, strong)NSTimer *timer; //定时器
@property (nonatomic, retain)NSMutableArray *arr;  //放图片的数组
@property (nonatomic, retain)UIView *headerView;  //tableView的表头
@property (nonatomic, retain)UIImageView *image;  //图片
@property (nonatomic, retain)UIScrollView *scrollView;  
@property (nonatomic, retain)UIPageControl *pageC;  //页码

//设置头视图
- (void)headImage{
    //图片数组
    self.arr = [NSMutableArray arrayWithObjects:@"8.jpg",@"1.jpg", @"2.jpg", @"3.jpg", @"4.jpg", @"5.jpg", @"6.jpg", @"7.jpg", @"8.jpg", @"1.jpg", nil];

    self.scrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, WIDTH, 200 * HEIGHT/667)];
    self.scrollView.backgroundColor = [UIColor clearColor];
    //设置滚动量
    self.scrollView.contentSize = CGSizeMake(WIDTH * self.arr.count, 0);
    //设置偏移量
    self.scrollView.contentOffset = CGPointMake(WIDTH, 0);
    //设置按页滚动
    self.scrollView.pagingEnabled = YES;
    //设置是否显示水平滑动条
    self.scrollView.showsHorizontalScrollIndicator = NO;
    //设置是否边界反弹
    self.scrollView.bounces = NO;
    //把scrollView添加到tableView的表头的视图上
    [self.headerView addSubview:self.scrollView];
    [_scrollView release];

    //循环图片添加到UIImageView上
    for (int i = 0 ;  i  < self.arr.count; i++) {
        NSString *name = [self.arr objectAtIndex:i];
        UIImage *img = [UIImage imageNamed:name];
        self.image = [[UIImageView alloc]init];
        self.image.frame = CGRectMake(i * WIDTH, 0, WIDTH, 200 * HEIGHT/667);
        self.image.image = img;
        [self.scrollView addSubview:self.image];
        [_image release];
    }
    self.scrollView.delegate = self;
    //设置页面
    self.pageC = [[UIPageControl alloc]initWithFrame:CGRectMake(100 * WIDTH/375, 120 * HEIGHT/667, 200* WIDTH/375, 60*HEIGHT/667)];
    self.pageC.backgroundColor = [UIColor clearColor];
    //把页码添加到头视图上
    [self.headerView addSubview:self.pageC];
    //设置页码数
    self.pageC.numberOfPages = self.arr.count;
    //设置选中页码的颜色
    self.pageC.currentPageIndicatorTintColor = [UIColor brownColor];
    //设置未选中的页码颜色
    self.pageC.pageIndicatorTintColor = [UIColor grayColor];
    //设置当前选中页
    self.pageC.currentPage = 0;
    //核心方法
    [self.pageC addTarget:self action:@selector(pageAction:) forControlEvents:UIControlEventValueChanged];
    [_pageC release];
    //自定义一个定时器方法
    [self addTimer];

}

 //定时器执行方法
- (void)change:(NSTimer *)time{
    if (self.pageC.currentPage == self.pageC.numberOfPages - 1) {
        self.pageC.currentPage = 0;
    } else if (self.pageC.currentPage < self.pageC.numberOfPages - 1) {
        self.pageC.currentPage++;
    }
    [self.scrollView setContentOffset:CGPointMake((self.pageC.currentPage + 1) * WIDTH, 0) animated:NO];

 }


原文来自：http://blog.youkuaiyun.com/shanhu_t/article/details/50359469
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