这是一个可以帮助你的代码
CGSize size = [[UIScreen mainScreen] bounds].size;
CGFloat frameX = size.width;
CGFloat frameY = size.height-30; //padding for UIpageControl
UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(offsetX, offsetY, frameX, frameY)];
scrollView.pagingEnabled = YES;
scrollView.backgroundColor = [UIColor clearColor];
scrollView.contentSize = CGSizeMake(frameX, frameY);
[self.view addSubview: scrollView];
// 假设 imageArray 中有图像数组
for(int i = 0; i < [imageArray]; i++)
{
UIImage *image = [UIImage imageNamed:[imageArray objectAtIndex:i]];
imageView = [[UIImageView alloc] initWithImage:image];
imageView.frame = CGRectMake(frameX * i, 0.0, frameX, frameY);
[scrollView addSubview:imageView];
}
scrollView.contentSize = CGSizeMake(frameX*[imageArray count], frameY);
请根据使用范围声明变量。我已经在本地声明了所有变量,这样可能不会造成混淆,并且还在视图控制器的底部添加了 UIPageControl
实现UIScrollView的委托方法到当前Page指示器
- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
float width = scrollView.frame.size.width;
float xPos = scrollView.contentOffset.x+10;
//Calculate the page we are on based on x coordinate position and width of scroll view
pageControl.currentPage = (int)xPos/width;
}
其中 pageControl 是添加在视图控制器底部的 UIPageControl