HarmonyOS Focus进入时弹出键盘问题

@Component  
export struct ExpandTextComponent {  
  @State text: string = ''  
  controller: TextAreaController = new TextAreaController()  
  // 默认不展示键盘  
  @State isShowKey: boolean = false;  
  
  aboutToAppear(): void {  
    // 根据业务需要，特殊情况下显示键盘  
    setTimeout(() => {  
      if (true) {  
        this.isShowKey = true  
        focusControl.requestFocus('TextArea_ID')  
      }  
    }, 1000)  
  }  
  build() {  
    Column() {  
      Column({ space: 50 }) {  
        TextArea({  
          text: this.text,  
          placeholder: 'The text area can hold an unlimited amount of text. input your word...',  
          controller: this.controller  
        })  
          .id("TextArea_ID")  
          .focusable(this.isShowKey)  
          .placeholderFont({ size: 16, weight: 400 })  
          .width(336)  
          .height(56)  
        Row() {  
          Button('open TextArea')  
            .onClick(() => {  
              sendEventByKey("TextArea_ID", 10, "")  
            })  
          Button('cloas TextArea')  
            .onClick(() => {  
              this.controller?.stopEditing()  
            })  
        }  
      }  
      .width('100%')  
      .height('100%')  
    }  
    .backgroundColor(Color.Orange)  
    .size({ width:'100%',height:'100%' })  
  }  
}