HarmonyOS TextInput处理电话号码格式

文本输入需要将电话号码xxxxxxxxxxx在输入时转为xxx xxxx xxxx的格式，采用官方api文档示例不生效，想了解还有什么需要设置的地方？

@State phoneText: string = ''

TextInput({ placeholder: $r('app.string.input_phone_hint'), text: `${this.phoneText}` })
  .onChange((number: string) => {
    this.phoneText = this.loginViewModel.formatPhoneInput(number)
  })
  .cancelButton({
    icon: {
      src: $r('app.media.icon_iv_data_delete'),
      size: 18
    }
  })
  .backgroundColor(Color.Transparent)
  .fontSize(18)
  .type(InputType.Number)
  .fontColor($r('app.color.cgws_color_FF333333_FFD1D1D1'))
  .placeholderColor($r('app.color.cgws_color_FFC2C2C2_FF5C5C5C_1'))
  .maxLength(this.loginViewModel.PHONE_NUM_TEXT_MAXSIZE_LENGTH)

public formatPhoneInput(number: string): string {
  let phoneText = ''
  let phoneNumberNoSpace: string = this.removeSpace(number);
  if (phoneNumberNoSpace.length > this.PHONE_NUM_TEXT_MAXSIZE_LENGTH - 2) {
    phoneText = phoneNumberNoSpace;
  } else if (this.checkNeedNumberSpace(number)) {
    if (phoneNumberNoSpace.length <= 3) {
      phoneText = phoneNumberNoSpace;
    } else {
      let split1: string = phoneNumberNoSpace.substring(0, 3);
      let split2: string = phoneNumberNoSpace.substring(3);
      phoneText = split1 + ' ' + split2;
      if (phoneNumberNoSpace.length > 7) {
        split2 = phoneNumberNoSpace.substring(3, 7);
        let split3: string = phoneNumberNoSpace.substring(7);
        phoneText = split1 + ' ' + split2 + ' ' + split3;
      }
    }
  } else {
    phoneText = number;
  }
  return phoneText
}

checkNeedNumberSpace(numText: string) {
  let isSpace: RegExp = new RegExp('[\\+;,#\\*]', 'g');
  let isRule: RegExp = new RegExp('^\\+.*');

  if (isSpace.test(numText)) {
    // 如果电话号码里有特殊字符，就不加空格
    if (isRule.test(numText)) {
      return true;
    } else {
      return false;
    }
  }
  return true;
}

removeSpace(str: string): string {
  if (StrUtil.isEmpty(str)) {
    return ''
  }
  return str.replace(new RegExp("[\\s]", "g"), '')
}
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