HarmonyOS 想做一个输入验证码的功能，请问这个UI要怎么设计啊，有好的方案吗

参考示例：

//Index.est
import { router } from '@kit.ArkUI';

@Entry
@Component
struct Index {
  build() {
    Row() {
      Column() {
        Button('使用系统键盘')
          .onClick(() => {
            router.pushUrl({ url: 'pages/SystemKeyboard' })
          })
          .margin({ bottom: 20 })
        Button('使用自定义键盘')
          .onClick(() => {
            router.pushUrl({ url: 'pages/CustomKeyboard' })
          })
      }
      .width('100%')
    }
    .height('100%')
  }
}

//CommonPage.ets
@Component
export struct CommonPage {
  build() {
    Row() {
      Column() {
        Navigation() {
          Row() {
            Text('登录账号')
            Text('156****5163')
          }
          .width('90%')
          .justifyContent(FlexAlign.SpaceBetween)
          .alignItems(VerticalAlign.Center)
          .padding({ bottom: 20 })
          .border({ width: { bottom: 1 }, color: '#ccc' })
          .margin({ top: 20, bottom: 20 })

          Row() {
            Text('切换账号')
            Image($r('app.media.right'))
              .width(20)
          }
          .width('90%')
          .justifyContent(FlexAlign.SpaceBetween)
          .alignItems(VerticalAlign.Center)
          .padding({ bottom: 20 })
          .border({ width: { bottom: 1 }, color: '#ccc' })
        }
        .hideTitleBar(false)
        .titleMode(NavigationTitleMode.Mini)
        .title('个人中心设置')
      }
      .width('100%')
      .height('100%')
    }
    .height('100%')
  }
}

//CustomKeyboard.ets
import { CommonPage } from './CommonPage';

export interface commonBorder {
  width?: Length | EdgeWidths,
  color?: ResourceColor | EdgeColors,
  radius?: Length | BorderRadiuses,
  style?: BorderStyle | EdgeStyles
}

@Entry
@Component
struct CustomKeyboard {
  // 展示的text
  @State @Watch('setValue') codeTxt: string = '';
  // 屏幕宽度
  @State screenWidth: number = 0;
  @State isShow: boolean = false
  @State inputValue: string = ''
  // 最大长度
  @State maxLength: number = 6;
  @State Index: number[] = [0, 1, 2, 3, 4, 5]
  // 控制动画的
  @State showMouse: boolean[] = [];
  controller: TextInputController = new TextInputController()
  // 未选中的样式
  private btnCancelBorder?: commonBorder =
    { width: '3px', color: '#ccc', style: BorderStyle.Solid }
  // 选中的样式
  private btnCancelBorderActive: commonBorder =
    { width: '3px', color: Color.Red, style: BorderStyle.Solid }

  aboutToAppear(): void {
    console.info('IsaKit aboutToAppear')
    this.screenWidth = 1080;
    this.showMouse = new Array(this.maxLength).fill(false);
  }

  setValue() {
    if (this.codeTxt) {
      this.handelInputTxt(this.codeTxt.length, this.codeTxt);
    } else {
      this.handelInputTxt(0, '');
    }
  }

  // 改变输入框选中的值
  handelInputTxt(length: number, val: string) {
    length === this.maxLength ? this.showMouse.fill(false) : this.showMouse.fill(false).splice(length - 1, 0, true);
    console.log('----length', length)
    console.info('----this.showMouse', JSON.stringify(this.showMouse));
    console.log('---value', val)
  }

  // 自定义键盘样式
  @Builder
  CustomKeyboardBuilder() {
    Column() {
      Grid() {
        ForEach([1, 2, 3, 4, 5, 6, 7, 8, 9, '*', 0, '#'], (item: number | string) => {
          GridItem() {
            Button(item + '')
              .width(110).onClick(() => {
              this.codeTxt += item
            })
          }
        })
      }.maxCount(3).columnsGap(10).rowsGap(10).padding(5)
    }.backgroundColor(Color.Gray)

    Flex({ direction: FlexDirection.Row, justifyContent: FlexAlign.SpaceEvenly }) {
      Button('关闭').width('30%')
        .onClick(() => {
          // 关闭自定义键盘
          this.controller.stopEditing()
        })
      Button().width('30%').opacity(0)
      Button('删除').width('30%')
        .onClick(() => {
          this.codeTxt = this.codeTxt.slice(0, -1)
          console.info('this.inputText', 'deleteLeft  this.inputText===' + this.codeTxt)
        })
    }
    .padding(5)
  }

  // 拉起的半模态样式
  @Builder
  bindSheetBuilder() {
    Column() {
      Text('填写手机短信验证码')
        .fontWeight(FontWeight.Bold)
        .margin({ top: 20, bottom: 20 })
      Row() {
        Text() {
          Span('已发送至')
            .fontSize(12)
            .fontWeight(400)
            .fontColor(Color.Grey)
        }

        Blank().width(5)
        Text() {
          Span('156****5163')
            .fontSize(12)
            .fontWeight(500)
            .fontColor(Color.Black)
        }
      }.width('100%')
      .justifyContent(FlexAlign.Start)
      .padding({ left: 20, right: 20 })
      .margin({ bottom: 20 })

      // 展示验证码
      this.buildAEnterCodeInput()
    }
  }

  // 公共页面，点击即可拉起半模态
  @Builder
  buildTitleName() {
    CommonPage()
      .onClick(() => {
        this.isShow = true
      })
      .bindSheet($$this.isShow, this.bindSheetBuilder, {
        height: '70%',
        blurStyle: BlurStyle.Thick,
        showClose: false,
        preferType: SheetType.CENTER
      })

  }

  @Builder
  componentBuilder() {
    Column() {
      this.buildTitleName()
      Blank().height(38)
      this.buildAEnterCodeInput()
      Blank().height(20)
    }
    .margin({ top: 10 })
    .borderRadius(8)
    .backgroundColor(Color.White)
  }

  // 验证码的样式
  @Builder
  buildAEnterCodeInput() {
    Flex({
      direction: FlexDirection.Row,
      alignItems: ItemAlign.Center,
      justifyContent: FlexAlign.SpaceBetween
    }) {
      Column() {
        Row() {
          Text(this.codeTxt[0])
            .fontSize(18)
            .fontWeight(600)
            .textAlign(TextAlign.Center)
            .width(50)
            .height(50)
            .margin({ left: 5, right: 5 })
            .border(this.showMouse[this.Index[0]] ? this.btnCancelBorderActive : this.btnCancelBorder)
            .borderRadius(5)

          Text(this.codeTxt[1])
            .fontSize(18)
            .fontWeight(600)
            .textAlign(TextAlign.Center)
            .width(50)
            .height(50)
            .margin({ left: 5, right: 5 })
            .border(this.showMouse[this.Index[1]] ? this.btnCancelBorderActive : this.btnCancelBorder)
            .borderRadius(5)

          Text(this.codeTxt[2])
            .fontSize(18)
            .fontWeight(600)
            .textAlign(TextAlign.Center)
            .width(50)
            .height(50)
            .margin({ left: 5, right: 5 })
            .border(this.showMouse[this.Index[2]] ? this.btnCancelBorderActive : this.btnCancelBorder)
            .borderRadius(5)

          Text(this.codeTxt[3])
            .fontSize(18)
            .fontWeight(600)
            .textAlign(TextAlign.Center)
            .width(50)
            .height(50)
            .margin({ left: 5, right: 5 })
            .border(this.showMouse[this.Index[3]] ? this.btnCancelBorderActive : this.btnCancelBorder)
            .borderRadius(5)

          Text(this.codeTxt[4])
            .fontSize(18)
            .fontWeight(600)
            .textAlign(TextAlign.Center)
            .width(50)
            .height(50)
            .margin({ left: 5, right: 5 })
            .border(this.showMouse[this.Index[4]] ? this.btnCancelBorderActive : this.btnCancelBorder)
            .borderRadius(5)

          Text(this.codeTxt[5])
            .fontSize(18)
            .fontWeight(600)
            .textAlign(TextAlign.Center)
            .width(50)
            .height(50)
            .margin({ left: 5, right: 5 })
            .border(this.showMouse[this.Index[5]] ? this.btnCancelBorderActive : this.btnCancelBorder)
            .borderRadius(5)
        }
        .onClick(() => {
          focusControl.requestFocus('TextInput')
        })
        TextInput({ controller: this.controller, text: $$this.inputValue })
          .width('100%')
          .height(100)
          .opacity(0)
          .id('TextInput')
          .customKeyboard(this.CustomKeyboardBuilder())
          .onChange((value) => {
            this.codeTxt = value
            if (this.codeTxt.length >= 6) {
              return
            }
            this.codeTxt += this.inputValue;
            console.info('----codeTxt' + this.codeTxt)
          })

      }
    }
    .backgroundColor(Color.White)
    .height(50)
    .margin({ left: 15, right: 15 })
    .id('customInput')
    .defaultFocus(false)
  }
  build() {
    Column() {
      this.componentBuilder()
    }
  }
}

//SystemKeyboard.ets
/*
 * Copyright (c) Huawei Technologies Co., Ltd. 2024-2024. All rights reserved.
 */
import inputMethod from '@ohos.inputMethod';
import { BusinessError } from '@ohos.base';
import { CommonPage } from './CommonPage'

@Entry
@Component
struct SystemKeyboard {
  // 输入的验证码
  @State codeTxt: string = '';
  // 初始化屏幕宽度
  @State screenWidth: number = 0;
  // 模态窗口是否展示
  @State isShow: boolean = false
  private isAttached: boolean = false;
  private inputController: inputMethod.InputMethodController = inputMethod.getController();
  private keyboardStatus: number = 0; // 默认是none， 1是hide，2是show

  aboutToAppear(): void {
    console.info('IsaKit aboutToAppear')
    this.screenWidth = 1080;
  }

  @Builder
  componentBuilder() {
    Column() {
      this.buildTitleName()
      Blank().height(38)
      this.buildAEnterCodeInput()
      Blank().height(20)
    }
    .margin({ top: 10 })
    .borderRadius(8)
    .backgroundColor(Color.White)
  }
  // 模态弹窗样式
  @Builder
  bindSheetBuilder() {
    Column() {
      Text('填写手机短信验证码')
        .fontWeight(FontWeight.Bold)
        .margin({ top: 20, bottom: 20 })
      Row() {
        Text() {
          Span('已发送至')
            .fontSize(12)
            .fontWeight(400)
            .fontColor(Color.Grey)
        }

        Blank().width(5)
        Text() {
          Span('156****5163')
            .fontSize(12)
            .fontWeight(500)
            .fontColor(Color.Black)
        }
      }.width('100%')
      .justifyContent(FlexAlign.Start)
      .padding({ left: 20, right: 20 })
      .margin({ bottom: 20 })
      this.buildAEnterCodeInput()
    }
  }
  // 拉起模态弹窗
  @Builder
  buildTitleName() {
    CommonPage()
      .onClick(() => {
        this.isShow = true
      })
      .bindSheet($$this.isShow, this.bindSheetBuilder, {
        height: '70%',
        blurStyle: BlurStyle.Thick,
        showClose: false,
        preferType: SheetType.CENTER
      })
  }

  // 单个验证码的格式
  @Styles
  fancyUse(){
    .width((this.screenWidth - 110) / 6)
    .height('100%')
    .margin({ left: 5, right: 5 })
    .border({
      width: 0.5,
      color: Color.Grey,
      style: BorderStyle.Solid
    })
    .borderRadius(5)
  }

  @Builder
  buildAEnterCodeInput() {
    Flex({
      direction: FlexDirection.Row,
      alignItems: ItemAlign.Center,
      justifyContent: FlexAlign.SpaceBetween
    }) {
      Text(this.codeTxt[0]) {
      }
      .fontSize(18)
      .fontWeight(600)
      .textAlign(TextAlign.Center)
      .fancyUse()

      Text(this.codeTxt[1])
        .fontSize(18)
        .fontWeight(600)
        .textAlign(TextAlign.Center)
        .fancyUse()

      Text(this.codeTxt[2])
        .fontSize(18)
        .fontWeight(600)
        .textAlign(TextAlign.Center)
        .fancyUse()

      Text(this.codeTxt[3])
        .fontSize(18)
        .fontWeight(600)
        .textAlign(TextAlign.Center)
        .fancyUse()

      Text(this.codeTxt[4])
        .fontSize(18)
        .fontWeight(600)
        .textAlign(TextAlign.Center)
        .fancyUse()

      Text(this.codeTxt[5])
        .fontSize(18)
        .fontWeight(600)
        .textAlign(TextAlign.Center)
        .fancyUse()

    }
    .backgroundColor(Color.White)
    .height(50)
    .margin({ left: 15, right: 15 })
    .id('customInput')
    .defaultFocus(false)
    .onVisibleAreaChange([0.0, 1.0], (isVisible: boolean, currentRatio: number) => {
      console.info('IsaKit Test Text isVisible: ' + isVisible + ', currentRatio:' + currentRatio)
      if (isVisible && currentRatio >= 1.0) {
        console.info('IsaKit Test Text is fully visible. currentRatio:' + currentRatio)
        this.attachAndListener();
      }

      if (!isVisible && currentRatio <= 0.0) {
        console.info('IsaKit Test Text is completely invisible.')
        this.detach()
      }
    })
    .onClick(async () => {
      console.info('IsaKit keyboardStatus =' + this.keyboardStatus)
      if (this.isAttached && this.keyboardStatus != 2) {
        // 输入法配置项
        let textConfig: inputMethod.TextConfig = {
          inputAttribute: {
            textInputType: inputMethod.TextInputType.NUMBER,
            enterKeyType: inputMethod.EnterKeyType.GO
          }
        };
        // 控件绑定输入法
        await this.inputController.attach(true, textConfig)
        return
      }
    })
  }
  // 解绑输入法
  detach() {
    this.inputController.off('insertText');
    this.inputController.off('deleteLeft');
    this.inputController.off('sendKeyboardStatus');
    this.inputController.detach((err: BusinessError) => {
      if (err) {
        console.error(`Failed to detach: ${JSON.stringify(err)}`);
        return;
      }
      this.isAttached = false
      console.log('Succeeded in detaching inputMethod.');
    });
  }

  // 绑定和设置监听
  async attachAndListener() {
    // 输入法配置项
    let textConfig: inputMethod.TextConfig = {
      inputAttribute: {
        textInputType: inputMethod.TextInputType.NUMBER,
        enterKeyType: inputMethod.EnterKeyType.GO
      }
    };

    // 控件绑定输入法
    await this.inputController.attach(true, textConfig)
    this.isAttached = true
    this.attachListener()
  }

  /*
   * 订阅输入法回调
   */
  attachListener(): void {
    // 订阅输入法应用插入文本事件
    this.inputController.on('insertText', (text) => {
      if (this.codeTxt.length >= 6) {
        return
      }
      this.codeTxt += text;
      console.info('this.inputText', 'insertText this.inputText===' + this.codeTxt)
    })

    // 订阅输入法应用向左删除事件
    this.inputController.on('deleteLeft', (length) => {
      this.codeTxt = this.codeTxt.substring(0, this.codeTxt.length - 1);
      console.info('this.inputText', 'deleteLeft  this.inputText===' + this.codeTxt, 'length' + length)
    })

    // 订阅输入法应用发送输入法软键盘状态事件
    this.inputController.on('sendKeyboardStatus', (keyboardStatus: inputMethod.KeyboardStatus) => {
      this.keyboardStatus = keyboardStatus
      console.info('IsaKit this.inputText keyboardStatus= ' + this.keyboardStatus)
    })
  }

  build() {
    Column() {
      this.componentBuilder()
    }
  }
}