正确缩放包含许多子视图的 UIScrollView
我创建了一个可缩放的 UIScrollView 并向其添加了 100 个子视图（平铺）。视图左右滚动完美。但是，我想允许缩放。
为此，我读到我的委托需要实现：
- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView {
return ???;
}
我见过只有一个子视图需要缩放的示例，因此它们在该方法中返回该子视图。然而，就我而言，我还有更多。进行缩放的正确方法是什么？
我尝试创建另一个 UIView 并向其中添加 100 个子视图。然后返回上述方法的一个视图，但我不起作用（它会缩放，但一旦停止，它就不再具有交互性）。
I created a zoomable UIScrollView and added 100 subviews to it (tiled). The view scrolls perfectly left and right. However, I'd like to allow zooming.
To do so I read that my delegate needs to implement:
- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView {
return ???;
}
I have seen examples that have only one subview to zoom, so they return that subview in that method. In my case, however, I have a lot more. What is the proper way to do the zooming?
I tried creating another UIView and adding the 100 subviews to that one. And then return that one view on the method above, but I doesn't work (it zooms but once it stops, it's not interactive any more).
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确切地说，
这也是苹果在 中提到的内容滚动视图编程指南：
只需创建一个视图，将所有子视图添加到该视图，并将新创建的视图作为单个子视图添加到滚动视图...
然后在 viewForZoomingInScrollView 委托方法中返回索引 0 处的对象：
Exactly,
This is what Apple also is mentioning in the Scroll View Programming Guide:
Just create a view, add all subviews to this view and add the newly created view as a single subview to the scrollview...
Then in the viewForZoomingInScrollView delegate method return the object at Index 0:
我创建了一个视图，在其中添加了所有内容：
而不设置其框架。
当我向其中添加所有子视图后，将其框架设置为足够大以容纳所有平铺子视图时，问题就解决了。
I created the view where I added everything using:
without setting its frame.
The problem was solved when, after adding all the subviews to it, I set its frame to something large enough to accommodate all the tiled subviews.
您必须将要添加的视图作为子视图返回到滚动视图。
例如：如果要将图像视图添加到滚动视图，则编写
You have to return what your going to add views to scroll view as a subviews.
Ex: If you are adding image view to scroll view then write