xcode uiscrollview 中的页面控制
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page control in uiscrollview
提问by kingston
i ve created a uiscrollview containing a page control which loads the images from resource bundle..everything works good.i m able to scroll through different images..the problem is if i m to click the corresponding pagecontrol(dot), i m not able to navigate to the corresponding image....could u guys help me out below is the code...the below code works perfectly fine
我创建了一个包含从资源包加载图像的页面控件的 uiscrollview ..一切正常.我能够滚动浏览不同的图像..问题是如果我点击相应的页面控件（点），我无法导航到相应的图像....你们能帮我看看下面的代码...下面的代码工作得很好
// Email.h
@interface Email : UIViewController<UIScrollViewDelegate>
{
UIPageControl *pageControl;
UIScrollView *scroller;
}
@property (nonatomic,retain)IBOutlet UIPageControl *pageControl;
@property (nonatomic,retain)IBOutlet UIScrollView *scroller;
-(IBAction)clickPageControl:(id)sender;
@end
// Email.m
@implementation Email
@synthesize pageControl,scroller;
-(IBAction)clickPageControl:(id)sender
{
int page=pageControl.currentPage;
CGRect frame=scroller.frame;
frame.origin.x=frame.size.width=page;
frame.origin.y=0;
[scroller scrollRectToVisible:frame animated:YES];
}
-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
int page = scrollView.contentOffset.x/scrollView.frame.size.width;
pageControl.currentPage=page;
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.title=@"Press Photos";
for (int i=1; i<10; i++)
{
UIImageView *images=[[UIImageView alloc]initWithImage:
[UIImage imageNamed:[NSString stringWithFormat:@"%d.jpg",i]]];
images.frame=CGRectMake((i-1)*320, 0, 320, 460);
[scroller addSubview:images];
[images release];
}
scroller.delegate=self;
scroller.contentSize=CGSizeMake(320*9, 460);
scroller.pagingEnabled=YES;
pageControl.numberOfPages=9;
pageControl.currentPage=0;
}
采纳答案by Deepak Danduprolu
frame.origin.x=frame.size.width=page;
should be
应该
frame.origin.x = frame.size.width * page;
