xcode 如何在 Swift 中制作全角 UITextField
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How to make a full-width UITextField in Swift
提问by Eduard
I'm very new to Swift, like one week new and I'd like to come up with a 100% width UITextField. The expected result is that the text field should be 100% of the screen's width.
我对 Swift 很陌生，就像一个星期新人，我想提出一个 100% 宽度的 UITextField。预期结果是文本字段应为屏幕宽度的 100%。
This is what I've done for iPhone 5 displays having a 320px vertically centered TextField.
这就是我为 iPhone 5 显示器所做的工作，该显示器具有 320 像素垂直居中的 TextField。
That looks as expected, but when I'm going on iPhone 6, this happens:
这看起来符合预期，但是当我使用 iPhone 6 时，会发生这种情况：
How is it possible to make this 100% of the screen's width? As I can only see fixed width inputs in size inspector.
怎么可能使屏幕宽度达到 100%？因为我只能在尺寸检查器中看到固定宽度的输入。
回答by luk2302
You should not specify the width but the leading and trailing space of the textfield to its superview:
您不应指定文本字段的宽度，而是指定其父视图的前导和尾随空间：
- select the
UITextFieldyou want to align - click on the
Pinicon - uncheck the "Constrain to margins"
- set the leading to 0
- set the trailing to 0
- 选择
UITextField要对齐的 - 点击
Pin图标 - 取消选中“约束到边距”
- 将前导设置为 0
- 将尾随设置为 0
which will result in the TextField to span the entire width on every screen:
这将导致 TextField 在每个屏幕上跨越整个宽度：
Note that you sometimes have to specify the view you want to set the space relative to:
请注意，有时您必须指定要设置相对于以下空间的视图：
回答by Daniel Krom
You can use auto layout and constraints,
您可以使用自动布局和约束，
if you wish, you can do it manually using code:
如果你愿意，你可以使用代码手动完成：
//full screen size
let screenWidth = UIScreen.mainScreen().bounds.width
textInput.frame.size.width = screenWidth
