textField.clearButtonMode 清除按钮出现模式
UITextFieldViewModeNever //clearbutton永远不出现
UITextFieldViewModeWhileEditing //编辑的时候出现
UITextFieldViewModeUnlessEditing //未编辑的时候出现
UITextFieldViewModeAlways //永远都出现
textField.keyboardType 键盘的样式
UIKeyboardTypeDefault //Defaulttypeforthecurrentinputmethod.
UIKeyboardTypeASCIICapable //英文键盘
UIKeyboardTypeNumbersAndPunctuation //Numbersandassortedpunctuation.
UIKeyboardTypeURL //AtypeoptimizedforURLentry(shows./.comprominently).
UIKeyboardTypeNumberPad //Anumberpad(0-9).SuitableforPINentry.
UIKeyboardTypePhonePad //Aphonepad(1-9,*,0,#,withlettersunderthenumbers)
UIKeyboardTypeNamePhonePad //Atypeoptimizedforenteringaperson’snameorphonenumber.
UIKeyboardTypeEmailAddress // 利于邮箱输入有@按钮
UIKeyboardTypeAlphabet=UIKeyboardTypeASCIICapable //Deprecated
textField.keyboardAppearance
UIKeyboardAppearanceDefault //Defaultapperanceforthecurrentinputmethod.
UIKeyboardAppearanceAlert //Appearancesuitableforusein”alert”scenarios.
textField.autocapitalizationType 键盘对输入字母的控制
UITextAutocapitalizationTypeNone//什么也不做
UITextAutocapitalizationTypeWords//单词首字母大写
UITextAutocapitalizationTypeSentences//句子首字母大些
UITextAutocapitalizationTypeAllCharacters//所有字母大些
textField.autocorrectionType 键盘对输入字母自动纠正
UITextAutocorrectionTypeDefault
UITextAutocorrectionTypeNo
UITextAutocorrectionTypeYes
textField.returnKeyType 确认键的类型
UIReturnKeyDefault
UIReturnKeyGo
UIReturnKeyGoogle
UIReturnKeyJoin
UIReturnKeyNext
UIReturnKeyRoute
UIReturnKeySearch
UIReturnKeySend
UIReturnKeyYahoo
UIReturnKeyDone
UIReturnKeyEmergencyCall