First, I set the keyboard to the simplified Chinese Pinyin 10 key.
When I click ABC, the proxy method in UITextField will return emoji, why?
public func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
// string is "➋", "➌", "➍", "➎", "➏", "➐", "➑", "➒", "☻"
print(string)
return true
}