為什么使用不同的輸入類型？

鍵盤輸入的類型幫助我們從用戶獲取必需的輸入。

它移除不需要的鍵，并包括所需的部分。用戶可以通過使用?UITextField?的鍵盤屬性設(shè)置輸入的類型。

如：文本字段( textField)。 ?keyboardType = UIKeyboardTypeDefault

鍵盤輸入類型

輸入的類型

描述

UIKeyboardTypeASCIICapable

鍵盤包括所有標準的?ASCII?字符。

UIKeyboardTypeNumbersAndPunctuation

鍵盤顯示數(shù)字和標點。

UIKeyboardTypeURL

鍵盤的?URL?項優(yōu)化。

UIKeyboardTypeNumberPad

鍵盤用于?PIN?輸入和顯示一個數(shù)字鍵盤。

UIKeyboardTypePhonePad

鍵盤對輸入電話號碼進行了優(yōu)化。

UIKeyboardTypeNamePhonePad

鍵盤用于輸入姓名或電話號碼。

UIKeyboardTypeEmailAddress

鍵盤對輸入電子郵件地址的優(yōu)化。

UIKeyboardTypeDecimalPad

鍵盤用來輸入十進制數(shù)字。

UIKeyboardTypeTwitter

鍵盤對?twitter @?和?#?符號進行了優(yōu)化。

添加自定義方法?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];

}

在?ViewController.m?中更新?viewDidLoad，如下所示

(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

}

輸出

現(xiàn)在當我們運行應(yīng)用程序時我們就會得到下面的輸出:

選擇不同的文本區(qū)域我們將看到不同的鍵盤。

總結(jié)

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