IOS 快速查看系统键盘样式

typedef NS_ENUM(NSInteger, UIKeyboardType) {    UIKeyboardTypeDefault,                // Default type for the current input method.    UIKeyboardTypeASCIICapable,           // Displays a keyboard which can enter ASCII characters    UIKeyboardTypeNumbersAndPunctuation,  // Numbers and assorted punctuation.    UIKeyboardTypeURL,                    // A type optimized for URL entry (shows . / .com prominently).    UIKeyboardTypeNumberPad,              // A number pad with locale-appropriate digits (0-9, ۰-۹, ०-९, etc.). Suitable for PIN entry.    UIKeyboardTypePhonePad,               // A phone pad (1-9, *, 0, #, with letters under the numbers).    UIKeyboardTypeNamePhonePad,           // A type optimized for entering a person's name or phone number.    UIKeyboardTypeEmailAddress,           // A type optimized for multiple email address entry (shows space @ . prominently).    UIKeyboardTypeDecimalPad NS_ENUM_AVAILABLE_IOS(4_1),   // A number pad with a decimal point.    UIKeyboardTypeTwitter NS_ENUM_AVAILABLE_IOS(5_0),      // A type optimized for twitter text entry (easy access to @ #)    UIKeyboardTypeWebSearch NS_ENUM_AVAILABLE_IOS(7_0),    // A default keyboard type with URL-oriented addition (shows space . prominently).    UIKeyboardTypeASCIICapableNumberPad NS_ENUM_AVAILABLE_IOS(10_0), // A number pad (0-9) that will always be ASCII digits.    UIKeyboardTypeAlphabet = UIKeyboardTypeASCIICapable, // Deprecated};

• 新增了第1个Default键盘和第4个URL键盘
• 删除了Alphabet键盘，替换为Default键盘

1、UIKeyboardTypeDefault

常用于文本输入

2、UIKeyboardTypeASCIICapable

常用于密码输入
3、UIKeyboardTypeNumbersAndPunctuation

主键盘显示如上图，次键盘显示字母
4、UIKeyboardTypeURL

适用于网址输入
5、UIKeyboardTypeNumberPad

只有数字的数字键盘
6、UIKeyboardTypePhonePad

可用于拨号的数字键盘
7、UIKeyboardTypeNamePhonePad

主键盘显示如上图，次键盘显示如下图

8、UIKeyboardTypeEmailAddress

适用于邮件地址输入的键盘
9、UIKeyboardTypeDecimalPad

带“点”的数字键盘，可用于带有小数点的数字输入
10、UIKeyboardTypeTwitter

11、UIKeyboardTypeWebSearch

适用于网页搜索的键盘