Input 输入类型 - 文本字段

为什么是输入类型?

键盘输入类型帮助我们从用户那里获得所需的输入。它会删除不需要的密钥并包含所需的密钥。我们可以通过 UITextField 的 keyboard 属性来设置用户可以输入的类型。

Eg: textField. keyboardType = UIKeyboardTypeDefault

键盘输入类型

序号	输入类型 & 描述
1	UIKeyboardTypeASCIICapable 键盘包含所有标准 ASCII 字符。
2	UIKeyboardTypeNumbersAndPunctuation 一旦显示，键盘就会显示数字和标点符号。
3	UIKeyboardTypeURL 键盘已针对 URL 输入进行了优化。
4	UIKeyboardTypeNumberPad 键盘用于 PIN 输入，显示数字键盘。
5	UIKeyboardTypePhonePad 键盘已针对输入电话号码进行了优化。
6	UIKeyboardTypeNamePhonePad 键盘用于输入姓名或电话号码。
7	UIKeyboardTypeEmailAddress 键盘已针对输入电子邮件地址进行了优化。
8	UIKeyboardTypeDecimalPad 键盘用于输入十进制数字。
9	UIKeyboardTypeTwitter 键盘已针对带有 @ 和 # 符号的 twitter 进行了优化。

添加自定义方法 addTextFieldWithDifferentKeyboard

实例


-(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 −

实例


(void)viewDidLoad {
   [super viewDidLoad];
   //The custom method to create textfield with different keyboard input
   [self addTextFieldWithDifferentKeyboard];
   //Do any additional setup after loading the view, typically from a nib
}