//滚动视图，单其本身也是一个独立的视图
myscrollView = [[UIScrollView alloc]initWithFrame:self.view.bounds];
myscrollView.backgroundColor = [UIColor grayColor];
//指定滚动视图的滚动尺寸
//如果想让滚动视图正常工作，必须要指定当前滚动视图的滚动尺寸大于2个以上当前屏幕尺寸
myscrollView.contentSize = CGSizeMake(self.view.bounds.size.width *2, self.view.bounds.size.height);
//指定滚动视图滚动方式为分页滚动
myscrollView.pagingEnabled = YES;
//隐藏滚动条
myscrollView.showsHorizontalScrollIndicator = NO;
myscrollView.showsVerticalScrollIndicator = NO;
//设置是否可以滚动
// scrollView.scrollEnabled = NO;
//关闭滚动视图回弹效果
// scrollView.bounces = NO;
//设置滚动条样式
// scrollView.indicatorStyle = UIScrollViewIndicatorStyleBlack;
// scrollView.scrollIndicatorInsets = UIEdgeInsetsMake(0, 50, 0, 0);
//指定scrollView的代理为当前类的实例
myscrollView.delegate = self;
[self.view addSubview:myscrollView];
UIImageView * imageView1 = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 320, 568)];
imageView1.image = [UIImage imageNamed:@"记私密"];
[myscrollView addSubview:imageView1];
UIImageView * imageView2 = [[UIImageView alloc]initWithFrame:CGRectMake(320, 0, 320, 568)];
imageView2.image = [UIImage imageNamed:@"玩游戏"];
[myscrollView addSubview:imageView2];
//创建分页指示器
pageControl = [[UIPageControl alloc]initWithFrame:CGRectMake(0, 553, 320, 15)];
//指定pageControl相关参数
//控制页面下圆点数
pageControl.numberOfPages = 2;
//设置背景颜色
pageControl.backgroundColor = [UIColor grayColor];
//分页指示器 行为的调用
[pageControl addTarget:self action:@selector(pageControlClick:) forControlEvents:UIControlEventValueChanged];
[self.view addSubview:pageControl];
//
pageCount = 0;
// NSTimer 计时器
[NSTimer scheduledTimerWithTimeInterval:2 target:self selector:@selector(imageViewScroll:) userInfo:nil repeats:YES];
}
//滚动视图开始滚动时执行
-(void)scrollViewDidScroll:(UIScrollView *)scrollView
{
NSLog(@"滚动");
//输出当前滚动视图偏移量
// NSLog(@"%lf",scrollView.contentOffset.x);
if ((int)scrollView.contentOffset.x % (int)self.view.bounds.size.width == 0) {
pageControl.currentPage = (int)scrollView.contentOffset.x / (int)self.view.bounds.size.width;
}
}
//计时器执行方法
-(void)imageViewScroll:(id)sender
{
if (pageCount == 1) {
pageCount = 0;
}else{
pageCount++;
}
[myscrollView setContentOffset:CGPointMake(self.view.bounds.size.width *pageCount, 0) animated:YES];
pageControl.currentPage = pageCount;
}
//分页指示器的方法
-(void)pageControlClick:(UIPageControl *)sender
{
NSLog(@"%ld",sender.currentPage);
//通过offset偏移量来修改当前滚动视图的滚动位置
[myscrollView setContentOffset:CGPointMake(self.view.bounds.size.width * sender.currentPage, 0) animated:YES];
}