IOS：在scrollview中添加imageview以进行缩放 [英] IOS: add imageview in a scrollview to have zoom

问题描述

我想设置一个带有 UIImage 的UIImageView，并将此imageview放在 UIScrollView 中以获得缩放这个图片;
我想要这个 UIImageView 和 UIScrollView 以适应视图中心的矩形。 。这可能吗？

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?

推荐答案

1. 将视图控制器设置为 < UIScrollViewDelegate>


2. 绘制 UIScrollView 您想要的矩形中心矩形视图。将检查器中的最大缩放设置为大于1的值。如4或10。


3. 右键单击滚动视图并将代理连接到视图控制器。


4. 在 UIScrollView 中绘制 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 +拖动表单 UIImageView 到View控制器的 .h ，为 UIImageView <创建 IBOutlet / code>，称之为聪明的东西，如 imageView 。



6. 添加此代码：

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;
}

运行app并捏并且直到你心中的内容。

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

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