在我的应用程序中,我有一个 CameraAppViewController,我从它导航到另一个视图控制器 OverlayViewController,然后我从它导航到另一个视图控制器 ScrollerViewController。我想在 scrollerviewcontroller 上有一个 uiscrollview,但它不滚动。但是,当我将 uiscrollview 的相同代码放在第一个 CameraAppViewController 时,它会滚动。与视图的框架相比,我尝试了所有改变滚动视图内容大小的技巧,但没有任何效果。我认为代码是正确的,因为它适用于一个视图控制器。我什至试图把它放到另一个项目中,它对第一个和第二个视图控制器都有效。我将不胜感激任何帮助。
我使用的代码如下:
UIImage *image1=[UIImage imageNamed:@"logo_idv0.jpg"];
UIImage *image2=[UIImage imageNamed:@"logo_idv1.jpg"];
UIImage *image3=[UIImage imageNamed:@"logo_idv2.jpg"];
NSMutableArray *allImages=[[NSMutableArray alloc] init];
[allImages addObject:image1];
[allImages addObject:image2];
[allImages addObject:image3];
self.view.backgroundColor = [UIColor redColor];
UIScrollView *scroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
scroll.pagingEnabled = YES;
scroll.scrollEnabled = YES;
scroll.clipsToBounds = YES;
NSInteger numberOfViews = 3;
for (int i = 0; i < numberOfViews; i++) {
CGFloat yOrigin = i * self.view.frame.size.width;
UIView *awesomeView = [[UIView alloc] initWithFrame:CGRectMake(yOrigin, 0, self.view.frame.size.width, self.view.frame.size.height)];
UIImageView *imageView=[[UIImageView alloc] initWithImage:[allImages objectAtIndex:i]];
[awesomeView addSubview:imageView];
awesomeView.backgroundColor = [UIColor colorWithRed:0.5/i green:0.5 blue:0.5 alpha:1];
[scroll addSubview:awesomeView];
}
scroll.contentSize = CGSizeMake(self.view.frame.size.width * numberOfViews, self.view.frame.size.height+10);
[self.view addSubview:scroll];