iOS Reference Library - UIKeyboardType
typedef enum { UIKeyboardTypeDefault, UIKeyboardTypeASCIICapable, UIKeyboardTypeNumbersAndPunctuation, UIKeyboardTypeURL, UIKeyboardTypeNumberPad, UIKeyboardTypePhonePad, UIKeyboardTypeNamePhonePad, UIKeyboardTypeEmailAddress, UIKeyboardTypeDecimalPad, UIKeyboardTypeAlphabet = UIKeyboardTypeASCIICapable } UIKeyboardType;
UIKeyboardTypeDefault,
UIKeyboardTypeASCIICapable,
UIKeyboardTypeAlphabet
UIKeyboardTypeNumbersAndPunctuation
UIKeyboardTypeURL
UIKeyboardTypeNumberPad
UIKeyboardTypePhonePad
UIKeyboardTypeNamePhonePad (左下角切換至PhonePad)
UIKeyboardTypeEmailAddress
UIKeyboardTypeDecimalPad