ios 弹出不同的键盘

iOS 提供了10种键盘类型，在开发中，我们可以根据不同的需求，选择不同的键盘样式，例如，当我们只需要输入手机号码时，可以选择纯数字类型的键盘（NumbersAndPunctuation），当我们需要输入网址时，可以选择URL样式的键盘（UIKeyboardTypeURL），其中，默认的键盘样式（UIKeyboardTypeDefault）就是（UIKeyboardTypeNamePhonePad）样式。

我们可以通过输入框的 keyboardType 来设置键盘样式

UITextField.keyboardType = UIKeyboardTypeNamePhonePad;

 1、  UIKeyboardTypeDefault,

        // Default type for the current input method.

 2、  UIKeyboardTypeASCIICapable,

        // Displays a keyboard which can enter ASCII characters, non-ASCII keyboards remain active

 3、  UIKeyboardTypeNumbersAndPunctuation,

        // Numbers and assorted punctuation.

 4、  UIKeyboardTypeURL,

        // A type optimized for URL entry (shows . / .com prominently).

 5、  UIKeyboardTypeNumberPad,

        // A number pad (0-9). Suitable for PIN entry.

 6、  UIKeyboardTypePhonePad,

        // A phone pad (1-9, *, 0, #, with letters under the numbers).

 7、  UIKeyboardTypeNamePhonePad,

        // A type optimized for entering a person's name or phone number.

 8、  UIKeyboardTypeEmailAddress,

        // A type optimized for multiple email address entry (shows space @ . prominently).

 9、  UIKeyboardTypeDecimalPad NS_ENUM_AVAILABLE_IOS(4_1),

        // A number pad with a decimal point.

 10、 UIKeyboardTypeTwitter    NS_ENUM_AVAILABLE_IOS(5_0),

        // A type optimized for twitter text entry (easy access to @ #)

 11、 UIKeyboardTypeWebSearch NS_ENUM_AVAILABLE_IOS(7_0),

        // A default keyboard type with URL-oriented addition (shows space . prominently).