1. typedef enum {
2. UIKeyboardTypeDefault,                // 默认键盘：支持所有字符
3. UIKeyboardTypeASCIICapable,           // 支持ASCII的默认键盘
4. UIKeyboardTypeNumbersAndPunctuation,  // 标准电话键盘，支持+*#等符号
5. UIKeyboardTypeURL,                    // URL键盘，有.com按钮；只支持URL字符
6. UIKeyboardTypeNumberPad,              //数字键盘
7. UIKeyboardTypePhonePad,               // 电话键盘
8. UIKeyboardTypeNamePhonePad,           // 电话键盘，也支持输入人名字
9. UIKeyboardTypeEmailAddress,           // 用于输入电子邮件地址的键盘
10. } UIKeyboardType;

用法用例：

textView.keyboardtype= UIKeyboardTypeNumberPad;

UIKeyboardTypeDefault：

UIKeyboardTypeASCIICapable：

UIKeyboardTypeNumbersAndPunctuation：

UIKeyboardTypeURL：

UIKeyboardTypeNumberPad：

UIKeyboardTypePhonePad：

UIKeyboardTypeNamePhonePad：

UIKeyboardTypeEmailAddress：

UIKeyboardTypeDecimalPad：

UIKeyboardTypeTwitter：

UIKeyboardTypeWebSearch:

UIKeyboardTypeAlphabet: