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一、键盘风格 | |
UIKit框架支持8种风格键盘 | |
``` | |
typedef enum { | |
UIKeyboardTypeDefault, // 默认键盘:支持所有字符 | |
UIKeyboardTypeASCIICapable, // 支持ASCII的默认键盘 | |
UIKeyboardTypeNumbersAndPunctuation, // 标准电话键盘,支持+*#等符号 | |
UIKeyboardTypeURL, // URL键盘,有.com按钮;只支持URL字符 | |
UIKeyboardTypeNumberPad, //数字键盘 |