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iOS视图和/或边距之间的快速间距以百分比％

[英]Ios swift spacing between views and/or margins in percentage %

原文 2015-05-22 18:38:49 1 1 ios/ swift/ spacing

there is a way to set horizontal space between 2 view or between 1 view and one margin in percentage? 有没有一种方法可以在2个视图之间或1个视图和一个边距之间设置水平间隔百分比？ I can set horizontal spacing or trailing space to superview or leading space to superview with constanst value (in pixels or some similar unit). 我可以使用固定值（以像素或类似单位）将水平间距或尾随空间设置为超级视图，或将前导空间设置为超级视图。

My personal solution was put a view A between what i want to pad (ie view B) and margin then i set view A width equals to superview and 0.3 (ie for 30%) at moltiplier. 我的个人解决方案是在我要填充的区域（即视图B）和边距之间放置一个视图A，然后将视图A的宽度设置为等于超级视图，并且在更宽的范围内设置为0.3（即30％）。

1 个解决方案

Each constraint in iOS has the following format iOS中的每个约束具有以下格式

item1.attribute1 = multiplier × item2.attribute2 + constant item1.attribute1 =乘数×item2.attribute2 +常数

So, when you set eg spacing with constant value you define that constant variable, and multiplier is set to 1 (no sense). 因此，当您设置例如具有常数值的间距时，您将定义该constant变量，并将multiplier设置为1（无意义）。

To set eg spacing in percentage you need to edit multiplier value, let say to 0.3 for 30% (or could be 1.3). 要设置百分比间距，您需要编辑multiplier数值，比如说30％为0.3（或者可以为1.3）。 You can do it in Interface builder, just select you constraint and define multiplier value. 您可以在“界面”构建器中执行此操作，只需选择约束并定义乘数值即可。 (from document outline or directly from IB) （来自文件大纲或直接来自IB）

Experiment with it, and also First/Second item. 尝试一下，也可以尝试第一项/第二项。