HarmonyOS 鸿蒙Next系统动态属性获焦回调函数（applyFocusedAttribute）没有被系统调用执行

我自定义了一个TextInput，发现动态属性（attributeModifier）中的获焦回调函数

applyFocusedAttribute(instance: TextInputAttribute): void 

一直没有被系统回调执行

是我调用的方式不对吗？求助

代码如下：

import promptAction from '@ohos.promptAction’

class CustomTextInputModifier implements AttributeModifier<TextInputAttribute> {
  applyNormalAttribute(instance: TextInputAttribute): void {
    instance.borderWidth(1)
    instance.borderColor(Color.Gray)
    // instance.borderColor(Color.Blue)
  }

  /**
   * 这个方法系统不回调，暂未找到原因
   * @param instance
   */
  applyFocusedAttribute(instance: TextInputAttribute): void {
    instance.borderWidth(1)
    instance.borderColor(Color.Blue)
  }

  applyDisabledAttribute(instance: TextInputAttribute): void {
    instance.borderWidth(0)
    instance.opacity(0.5)
  }
}

@Component
export struct CustomTextInput {
  @Prop enable: boolean = true
  @Prop focus: boolean = false
  @Prop placeholder?: ResourceStr = ‘请输入内容’
  @State text: string = ‘’
  @State private _modifier: CustomTextInputModifier = new CustomTextInputModifier()

  build() {
    TextInput({
      text: this.text,
      placeholder: this.placeholder,
    })
      .focusable(true)
      .enabled(this.enable)
      .defaultFocus(this.focus)
      .attributeModifier(this._modifier)
      .onChange((value) => {
        this.text = value
      })
      .onFocus(() => {
        promptAction.showToast({
          message: ‘输入框获焦了’,
          duration: 1_000
        })
      })
      .onBlur(() => {
        setTimeout(() => {
          promptAction.showToast({
            message: ‘输入框失焦了’
          })
        }, 3_000)
      })
  }
}

@Preview
@Component
export struct CustomTextInputDemo {
  build() {
    Column() {
      CustomTextInput({
        text: “默认态”,
      })
        .margin(10)

      CustomTextInput({
        text: “获焦态”,
        focus: true
      })
        .margin(10)

      CustomTextInput({
        text: “禁用态”,
        enable: false
      })
        .margin(10)
    }
    .width(‘100%’)
    .alignItems(HorizontalAlign.Start)
  }
}