iOS - UIScrollView 不工作(它根本不滚动 - 图像保持固定) [英] iOS - UIScrollView is not working (it doesn't scroll at all - the image stays fixed)

问题描述

我想在图像视图中显示图像(宽度:320 像素，高度:1250 像素).

I would like to display an image (width: 320 pixels, height: 1250 pixels) in an image view.

当我编译应用程序时，我根本没有滚动.视图保持不变.

When I compile the application I get no scrolling at all. The view stays fixed.

我做了什么:

1. 通过 Interface Builder 在我的视图中添加了一个 UIScrollView.
2. 通过 Interface Builder 向我的视图添加了一个 UIImageView.
3. 验证 UIImageView 在 Interface Builder 中位于 UIScrollView 之下.
4. 使用 ViewDidLoad 设置 UIScrollView 的大小.

1. Added an UIScrollView via Interface Builder to my view.
2. Added an UIImageView via Interface Builder to my view.
3. Verified that UIImageView is below UIScrollView in Interface Builder.
4. Set the size of the UIScrollView with ViewDidLoad.

我该怎么做?

代码:

- (void)viewDidLoad
{
    [super viewDidLoad];
    scrollView.contentSize = CGSizeMake(320, 1250);
}

截图:

ImageView:

ScrollView:

推荐答案

我刚刚做了同样的任务..试试这个.....

I just have done the same task.. Try this one.....

scrollView.delegate = self;
scrollView.scrollEnabled = YES;

int scrollWidth = 120;
scrollView.contentSize = CGSizeMake(scrollWidth,80);     


int xOffset = 0;
imageView.image = [UIImage imageNamed:[imagesName objectAtIndex:0]];

for(int index=0; index < [imagesName count]; index++)
{       
    UIImageView *img = [[UIImageView alloc] init];
    img.bounds = CGRectMake(10, 10, 50, 50);
    img.frame = CGRectMake(5+xOffset, 0, 50, 50);
    NSLog(@"image: %@",[imagesName objectAtIndex:index]);
    img.image = [UIImage imageNamed:[imagesName objectAtIndex:index]];
    [images insertObject:img atIndex:index];         
    scrollView.contentSize = CGSizeMake(scrollWidth+xOffset,110); 
    [scrollView addSubview:[images objectAtIndex:index]];

    xOffset += 70;
}

也设置这个....

imagesName = [[NSArray alloc]initWithObjects:@"image1.jpg",@"image2.jpg",@"image3.jpg",@"image4.jpg",@"image5.jpg",@"image6.png",@"image7.png",@"image9.png",nil];
    images = [[NSMutableArray alloc]init];

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