HarmonyOS 鸿蒙Next文档和示例有什么不可告人的东西吗，未授权不给看

可使用window.on(‘keyboardHeightChange’)监听键盘高度，判断软键盘的显示与隐藏。
文档：https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/js-apis-window-V5#onkeyboardheightchange7

import window from '@ohos.window';
import { BusinessError } from '@ohos.base';
[@Entry](/user/Entry)
[@Component](/user/Component)
struct TextAreaExample {
  [@State](/user/State) text: string = ''
  [@State](/user/State) counterVisible: boolean = false
  [@State](/user/State) maxNumber: number = -1
  data:number = 10;
  [@State](/user/State) isHideKeybord: boolean = true
  controller: TextAreaController = new TextAreaController()
  aboutToAppear(): void {
    console.log('22222')
  }
  onPageShow(): void {
    console.log('11111')
    this.isHideKeybord = (this.data > 0)? false : true;
    console.log(JSON.stringify(this.data))
    console.log(JSON.stringify(this.isHideKeybord))
    window.getLastWindow(getContext()).then(lastWindow => {
      lastWindow.on('keyboardHeightChange', (data) => {
        console.log(JSON.stringify(data))
        this.isHideKeybord = (data > 0)? false : true;
      })
    }).catch((err: BusinessError) => {
      console.error('Failed to enable the listener for keyboard height changes. Cause: ' + JSON.stringify(err));
    })
  }
build() {
Column() {
TextArea({
text: this.text,
placeholder: ‘请输入’,
controller: this.controller
})
.placeholderFont({ size: 16, weight: 400 })
.width(336)
.height(56)
.margin(20)
.fontSize(16)
.fontColor(’#182431’)
.maxLength(10)
.showCounter(true)
.backgroundColor(’#FFFFFF’)
.onChange((value: string) => {
this.text = value
})
}.width(‘100%’).height(‘100%’).backgroundColor(’#F1F3F5’)
}
}<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>