21st,april,2016
The next step is to write a custom keyboard, so by the way, there are some of the native keyboards that Apple provides. There are currently 11 kinds.
As shown, overall BOM publishing 11 types, where Uikeyboardtypealphabet is already deprecated, from UITextInputTraits.h:
Uikeyboardtypedefault
Default keyboard type, commonly used for text input, secondary keyboard to enter emoticons and numbers
uikeyboardtypeasciicapable
Cannot input the expression, the secondary keyboard can enter the number. Commonly used for password entry.
uikeyboardtypenumbersandpunctuation
Numbers and punctuation, secondary keyboard can enter letters
Uikeyboardtypeurl
Use when entering URLs
Uikeyboardtypenumberpad
Numeric keypad
Uikeyboardtypephonepad
Uikeyboardtypenamephonepad
uikeyboardtypeemailaddress
Uikeyboardtypedecimalpad
Uikeyboardtypetwitter
Uikeyboardtypewebsearch
Resources:
how many different keyboard layouts are there in iOS?
iOS native keyboard type