键盘输入类型可帮助无涯教程从用户那里获得所需的输入。无涯教程可以使用UITextField的keyboard属性设置用户可以提供的输入类型。

Input types - 键盘输入类型

Sr.No. Input Type & 描述
1

UIKeyboardTypeASCIICapable

键盘包括所有标准ASCII字符。
2

UIKeyboardTypeNumbersAndPunctuation

一旦显示，键盘就会显示数字和标点符号。
3

UIKeyboardTypeURL

键盘针对URL输入进行了优化。
4

UIKeyboardTypeNumberPad

键盘用于PIN输入，并显示数字键盘。
5

UIKeyboardTypePhonePad

键盘经过优化，可以输入手机号。
6

UIKeyboardTypeNamePhonePad

键盘用于输入姓名或手机号。
7

UIKeyboardTypeEmailAddress

键盘经过优化，可以输入电子邮件地址。
8

UIKeyboardTypeDecimalPad

键盘用于输入十进制数字。
9

UIKeyboardTypeTwitter

键盘针对带有@和#符号的twitter进行了优化。

Input types - 自定义方法

-(void) addTextFieldWithDifferentKeyboard {

   UITextField *textField1= [[UITextField alloc]initWithFrame: 
   CGRectMake(20， 50， 280， 30)];
   textField1.delegate = self;
   textField1.borderStyle = UITextBorderStyleRoundedRect;
   textField1.placeholder = @"Default Keyboard";
   [self.view addSubview:textField1];

   UITextField *textField2 = [[UITextField alloc]initWithFrame:
   CGRectMake(20， 100， 280， 30)];
   textField2.delegate = self;
   textField2.borderStyle = UITextBorderStyleRoundedRect;
   textField2.keyboardType = UIKeyboardTypeASCIICapable;
   textField2.placeholder = @"ASCII keyboard";
   [self.view addSubview:textField2];

   UITextField *textField3 = [[UITextField alloc]initWithFrame:
   CGRectMake(20， 150， 280， 30)];
   textField3.delegate = self;
   textField3.borderStyle = UITextBorderStyleRoundedRect;
   textField3.keyboardType = UIKeyboardTypePhonePad;
   textField3.placeholder = @"Phone pad keyboard";
   [self.view addSubview:textField3];

   UITextField *textField4 = [[UITextField alloc]initWithFrame:
   CGRectMake(20， 200， 280， 30)];
   textField4.delegate = self;
   textField4.borderStyle = UITextBorderStyleRoundedRect;
   textField4.keyboardType = UIKeyboardTypeDecimalPad;
   textField4.placeholder = @"Decimal pad keyboard";
   [self.view addSubview:textField4];

   UITextField *textField5= [[UITextField alloc]initWithFrame:
   CGRectMake(20， 250， 280， 30)];
   textField5.delegate = self;
   textField5.borderStyle = UITextBorderStyleRoundedRect;
   textField5.keyboardType = UIKeyboardTypeEmailAddress;
   textField5.placeholder = @"Email keyboard";
   [self.view addSubview:textField5];

   UITextField *textField6= [[UITextField alloc]initWithFrame:
   CGRectMake(20， 300， 280， 30)];
   textField6.delegate = self;
   textField6.borderStyle = UITextBorderStyleRoundedRect;
   textField6.keyboardType = UIKeyboardTypeURL;
   textField6.placeholder = @"URL keyboard";
   [self.view addSubview:textField6];
}

更新ViewController.m中的viewDidLoad，如下所示:

(void)viewDidLoad {
   [super viewDidLoad];
   //使用不同键盘输入创建文本字段的自定义方法
   [self addTextFieldWithDifferentKeyboard];
   //Do any additional setup after loading the view， typically from a nib
}

运行应用程序时，将获得以下输出-

iOS Tutorial

无涯教程将在选择每个文本字段时看到不同的键盘。

参考链接

https://www.learnfk.com/ios/ios-ui-elements-input-types-text-field.html