将UIButton设置为屏幕大小的一半 [英] Making a UIButton a % of the screen size

问题描述

我注意到某些按钮尺寸在iPhone 5模拟器上看起来不错，但在iPhone 6模拟器上看起来不太好，这是因为我放在UIButton上的高度或约束最终留下了很多空白

I noticed certain button sizes look great on one the iPhone 5 simulator but do not look as good on the iPhone 6 simulator and this is because the heights or constraints that I place on the UIButtons end up leaving a lot of blank space down the bottom of my App Screen.

我想要一个按钮，它是屏幕尺寸的40％，不管我在模拟什么设备。

I would like to have a button that is 40% of the screen size regardless of what device I am simulating on.

有关如何使按钮大小保持屏幕尺寸的40％的任何想法，无论设备是什么？

Any ideas on how to make the size of the button stay 40% of the screen size regardless of the device?

推荐答案

1. Ctrl从按钮拖动到超视图，然后选择等宽度



2. 打开尺寸检查器编辑等宽度约束并将乘数设置为0.4。
   你会看到这样的：
   

1. Ctrl drag from button to superview and select Equal Widths

2. Open Size Inspector edit Equal Widths constraint and set multiplier to 0.4. And you will see something like this:

添加缺少的约束和更新框架。

Add missing constraints and update frames.

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