UITextField手机号格式aaa bbbb cccc

functextField(_textField:UITextField, shouldChangeCharactersIn range:NSRange, replacementString string:String) ->Bool{

        ifstring.isNonEmpty(),varstr = textField.text{

            str.insert(Character.init(string), at: str.index(str.startIndex, offsetBy: range.location))

            letlocation = (range.location==3|| range.location==8) ? (range.location+2) : (range.location+1)

            textFieldEditing(textField, str: str, location: location)

            returnfalse

        }else{

            ifvarstr = textField.text{

                ifrange.location==3|| range.location==8{

                    letstart = textField.position(from: textField.beginningOfDocument, offset: range.location)

                    letend = textField.position(from: textField.beginningOfDocument, offset: range.location)

                    textField.selectedTextRange= textField.textRange(from: start!, to: end!)

                    returnfalse

                }else{

                    str.remove(at: str.index(str.startIndex, offsetBy: range.location))

                    letlocation = (range.location==3|| range.location==8|| range.location==4|| range.location==9) ? (range.location-1) : (range.location)

                    textFieldEditing(textField, str: str, location: location)

                    returnfalse

                }

            }

        }

        return true

    }

    functextFieldEditing(_textField:UITextField, str:String, location:Int) {

        varstr = str.replacingOccurrences(of:" ", with:"")

        ifstr.count>3{

            str.insert(" ", at: str.index(str.startIndex, offsetBy:3))

        }

        ifstr.count>8{

            str.insert(" ", at: str.index(str.startIndex, offsetBy:8))

        }

        textField.text= str

        GMLoginCodeView.afterPhoneText = str

        letstart = textField.position(from: textField.beginningOfDocument, offset: location)

        letend = textField.position(from: textField.beginningOfDocument, offset: location)

        textField.selectedTextRange= textField.textRange(from: start!, to: end!)

    }

以下支持粘贴：

// String:新输入或者粘贴过来的文字

// range：输入的范围

functextField(_textField:UITextField, shouldChangeCharactersIn range:NSRange, replacementString string:String) ->Bool{

        ifstring.isNonEmpty(),varstr = textField.text{

            ifstr.isNonEmpty() {

                varlocation =0

                ifstring.count==1{

                    str.insert(Character.init(string), at: str.index(str.startIndex, offsetBy: range.location))

                    location = (range.location==3|| range.location==8) ? (range.location+2) : (range.location+1)

                    textFieldEditing(textField, str: str, location: location)

                }else{

                    str += string

                    textFieldEditing(textField, str: str, location:15)

                }

            }else{

                str += string

                textFieldEditing(textField, str: str, location:15)

            }

            returnfalse

        }else{

            ifvarstr = textField.text{

                ifrange.location==3|| range.location==8{

                    letstart = textField.position(from: textField.beginningOfDocument, offset: range.location)

                    letend = textField.position(from: textField.beginningOfDocument, offset: range.location)

                    textField.selectedTextRange= textField.textRange(from: start!, to: end!)

                    returnfalse

                }else{

                    str.remove(at: str.index(str.startIndex, offsetBy: range.location))

                    letlocation = (range.location==3|| range.location==8|| range.location==4|| range.location==9) ? (range.location-1) : (range.location)

                    textFieldEditing(textField, str: str, location: location)

                    returnfalse

                }

            }

        }

        return true

    }

    functextFieldEditing(_textField:UITextField, str:String, location:Int) {

        varstr = str.replacingOccurrences(of:" ", with:"")

        ifstr.count>3{

            str.insert(" ", at: str.index(str.startIndex, offsetBy:3))

        }

        ifstr.count>8{

            str.insert(" ", at: str.index(str.startIndex, offsetBy:8))

        }

        textField.text= str

        GMLoginCodeView.afterPhoneText = str

        iflocation !=15{

//设置光标位置

            letstart = textField.position(from: textField.beginningOfDocument, offset: location)

            letend = textField.position(from: textField.beginningOfDocument, offset: location)

            textField.selectedTextRange= textField.textRange(from: start!, to: end!)

        }

    }