IOS:在滚动视图中添加图像视图以进行缩放 [英] IOS: add imageview in a scrollview to have zoom

问题描述

我想用 UIImage 设置 UIImageView 并将这个 imageview 放在 UIScrollView 中以获得这个图像的缩放；我希望这个 UIImageView 和 UIScrollView 适合视图中心的矩形...有可能吗?

解决方案

1. 将您的视图控制器设置为 <UIScrollViewDelegate>
2. 将 UIScrollView 绘制为视图中心矩形所需的大小.将检查器中的最大缩放设置为大于 1 的值.例如 4 或 10.
3. 右键单击滚动视图并将代理连接到您的视图控制器.
4. 在 UIScrollView 中绘制您的 UIImageView 并使用您想要的任何图像进行设置.使其与 UIScrollView 的大小相同.
5. Ctrl + 将 UIImageView 拖动到 View 控制器的 .h 中，为 UIImageView 创建一个 IBOutletcode>，把它称为 imageView 之类的聪明东西.

6. 添加此代码:

   <块引用>

   -(UIView *) viewForZoomingInScrollView:(UIScrollView *)scrollView{返回self.imageView；}

7. 运行应用程序并捏合和平移，直到心满意足.

I want to set a UIImageView with a UIImage and put this imageview inside a UIScrollView to obtain a zoom of this image; and I want this UIImageView and UIScrollView to fit in the rect at the center of the view...is it possible?

解决方案

1. Set your view controller up as a <UIScrollViewDelegate>
2. Draw your UIScrollView the size you want for the rectangle at the center of the view. Set the max zoom in the inspector to something bigger than 1. Like 4 or 10.
3. Right click on the scroll view and connect the delegate to your view controller.
4. Draw your UIImageView in the UIScrollView and set it up with whatever image you want. Make it the same size as the UIScrollView.
5. Ctrl + drag form you UIImageView to the .h of your View controller to create an IBOutlet for the UIImageView, call it something clever like imageView.

6. Add this code:

   -(UIView *) viewForZoomingInScrollView:(UIScrollView *)scrollView
   {
       return self.imageView;
   }
   

7. Run the app and pinch and pan til your heart's content.

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