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，我没有滚动一点都不视图保持不变。

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

我做了什么：

1. 添加了 UIScrollView 通过 Interface Builder 到我的视野。


2. 通过Interface Builder在我的视图中添加了 UIImageView 。


3. 已验证 UIImageView 在Interface Builder中低于 UIScrollView 。


4. 设置 UIScrollView ， ViewDidLoad 。

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.

怎么做我这样做了？

代码：

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

屏幕截图：

ImageView ：

ScrollView ：

推荐答案

我刚刚完成了同样的任务..
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;
}

同时设置这个....

Also set this one....

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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