xcode 如何以编程方式设置 iPhone 键盘以显示所需的键集
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/6021547/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to programmatically set iphone keyboard to show desired key set
提问by Mike Hoover
I am programming an iPhone app that I want a text field where the user can add numbers from the keyboard and add them on the fly, ie, the user might type "1.5+2.4+6.3+.063" and as the user types additional numbers and plus signs the total is displayed immediately.
我正在编写一个 iPhone 应用程序，我想要一个文本字段，用户可以在其中从键盘添加数字并即时添加它们，即，用户可能会输入“1.5+2.4+6.3+.063”，并且当用户输入其他内容时数字和加号立即显示总数。
The problem is starting on and keeping the keyboard in the 123mode after the user types a + sign (using email keyboard because it has the numbers and the plus sign on the same view).
问题是123在用户键入 + 号后开始并保持键盘处于该模式（使用电子邮件键盘，因为它在同一视图上具有数字和加号）。
How can I start the email keyboard on the _123 screen and keep it there?
如何在 _123 屏幕上启动电子邮件键盘并将其保留在那里？
Thanks! Mike
谢谢！麦克风
回答by Jhaliya
use below code to set the keyboard type
使用下面的代码来设置键盘类型
myTextField.keyboardType = UIKeyboardTypeNumberPad;
All the keyboard type is define in UITextInputTraitsprotocol, which is implemented by UITextField
所有的键盘类型都在UITextInputTraits协议中定义，该协议由UITextField实现
回答by Sid
Depending on what textfield you want to set it for you go:
根据您要为您设置的文本字段：
[textField setKeyboardType:(UIKeyboardType)];
Where UIKeyboardType could be any of the following: UIKeyboardTypes
其中 UIKeyboardType 可以是以下任何一种：UIKeyboardTypes
***EDIT
***编辑
In your case you would do:
在你的情况下，你会这样做：
[textField setKeyboardType:UIKeyboardTypeNumbersAndPunctuation];
***EDIT
***编辑
回答by AamirR
No, I could not find a way to programmatically change keyboard modes to 123or #+=.
不，我找不到以编程方式将键盘模式更改为123或 的方法#+=。
But if you want the default keyboard start as if user had pressed the 123button on keypad, your only choice is:
但是，如果您希望默认键盘启动就像用户按下了123键盘上的按钮一样，您唯一的选择是：
textField.keyboardType = UIKeyboardType.numbersAndPunctuation
Here is how numbersAndPunctuationkeypad will be presented
以下是numbersAndPunctuation键盘的显示方式
Other related/useful keypad types are:
其他相关/有用的键盘类型是：
textField.keyboardType =.numberPad
textField.keyboardType =.decimalPad
textField.keyboardType =.phonePad
