UIView autoresizingMask - Interface Builder to Code - 以编程方式创建struts和spring - Swift或Objective-C

问题描述

我已经使用Interface Builder制作了一些子视图，但我想在代码中进行。

I've laid out some subviews with Interface Builder, but I'd like to do it in code instead.

我读过 view.autoresizingMask属性。我正在寻找如何通过使用提供的各种掩码来翻译struts和spring的逻辑解释（例如 UIViewAutoresizingFlexibleLeftMargin 等）。

I've read the UIView docs about setting the view.autoresizingMask property. I'm looking for a logical explanation of how to translate the struts and springs by using the various masks offered (e.g. UIViewAutoresizingFlexibleLeftMargin, etc).

推荐答案

为视图设置自动调整大小时，使用按位包含OR（ | ）（目标 - C），或数组（Swift 2,3）指定弹簧和 struts 。

When setting the autoresizing mask for a view, use a bitwise inclusive OR (|) (Objective-C), or an array (Swift 2, 3) to specify springs and struts.

• 弹簧通过指定遮罩（分别为Objective-C或Swift 3）来表示：

• Springs are represented by specifying a mask (Objective-C or Swift 3, respectively):

• 垂直弹簧： UIViewAutoresizingFlexibleHeight 或 .flexibleHeight

水平弹簧： UIViewAutoresizingFlexibleWidth 或 .flexibleWidth

Struts 表示缺少四个灵活边距面具中的一个（即如果支柱是不存在，那个边缘的面具n被指定）：

Struts are represented by the lack of one of the four 'flexible margin' masks (i.e. if a strut does not exist, the mask for that margin is specified):

• UIViewAutoresizingFlexibleLeftMargin 或 .flexibleLeftMargin

UIViewAutoresizingFlexibleRightMargin 或。 flexibleRightMargin

UIViewAutoresizingFlexibleTopMargin 或 .flexibleTopMargin

UIViewAutoresizingFlexibleBottomMargin 或 .flexibleBottomMargin

例如，带有水平弹簧和顶部和底部支柱将具有宽度，左右边距指定为灵活：

For example, a view with a horizontal spring and top and bottom struts would have the width, and left and right margins specified as flexible:

Swift 3

mySubview.autoresizingMask = [.flexibleWidth, .flexibleLeftMargin, .flexibleRightMargin]

Swift 2

mySubview.autoresizingMask = [.FlexibleWidth, .FlexibleLeftMargin, .FlexibleRightMargin]

Swift 1.2

mySubview.autoresizingMask = .FlexibleWidth | .FlexibleLeftMargin | .FlexibleRightMargin

Objective-C

mySubview.autoresizingMask = (UIViewAutoresizingFlexibleWidth |    
                              UIViewAutoresizingFlexibleLeftMargin |  
                              UIViewAutoresizingFlexibleRightMargin);

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