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IOS – 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。它会删除不需要的键并包含需要的键。我们可以使用 UITextField 的键盘属性设置用户可以提供的输入类型。
  • 例如:文本字段。键盘类型 = UIKeyboardTypeDefault

键盘输入类型

序号输入类型和描述
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。
9
UIKeyboardTypeTwitter
键盘针对 Twitter 进行了优化,带有 @ 和 # 符号。

添加自定义方法 addTextFieldWithDifferentKeyboard


-(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 –

(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
}

输出

当我们运行应用程序时,我们将获得以下输出 –
iOS 教程
我们将看到在选择每个文本字段时显示不同的键盘。

炫意HTML5 » IOS – 输入类型 – 文本字段

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