滚动垂直

Question

我使用以下代码来滚动scrooll视图图像，

StoryViewScroller = [[[UIScrollView alloc] initWithFrame:CGRectMake(0.0f, 79.0f, 320.0f, 262)] autorelease]; 
StoryViewScroller.contentSize = CGSizeMake(NPAGES * 320.0f, StoryViewScroller.frame.size.height); 
StoryViewScroller.pagingEnabled = YES; 
StoryViewScroller.delegate = self; 
StoryViewScroller.showsHorizontalScrollIndicator = NO; 
StoryViewScroller.scrollsToTop = YES; 
// Load in all the pages 
for (i = 0; i < NPAGES; i++) 
{ 
    NSString *filename = [NSString stringWithFormat:@"%d.jpg", i+1]; 
    UIImageView *iv = [[UIImageView alloc] initWithImage:[UIImage imageNamed:filename]]; 
    iv.frame = CGRectMake(i * 320.0f, 0.0f, 320.0f, 262); 
    [StoryViewScroller addSubview:iv]; 
    NSLog(@"I is :: %d" ,i); 
    [iv release]; 
} 

[self.view addSubview:StoryViewScroller]; 

这使炒面TOS滚动视图从左到右和副versa.what我应该改变为sroll视图从上到下反之亦然。

sugggestions

问候

Answer 1

为了使垂直滚动设定适当高度的contentSize，例如

StoryViewScroller.contentSize = CGSizeMake(320.0f, NPAGES*StoryViewScroller.frame.size.height);