HarmonyOS 使用CustomDialogController的输入框在键盘弹出后有一个间隙

@Entry  
@Component  
struct CustomDialogPage {  
  @State message: string = 'CustomDialogPage';  
  customDialogController: CustomDialogController = new CustomDialogController({  
    builder: CustomEditDialogWidget({  
      tipString: '姓名',  
      inputType: InputType.Normal,  
      textInputConString: (info: string) => {  
      }  
    }),  
    alignment: DialogAlignment.Bottom,  
    maskColor: Color.Red, //1、蒙层颜色  
    customStyle: true //2.1、弹窗位置  
  });  
  build() {  
    Row() {  
      Column() {  
        Button(this.message).onClick(() =>{  
          this.customDialogController.open();  
        })  
      }  
      .width('100%')  
    }  
    .height('100%')  
  }  
}  
@CustomDialog  
@Component  
export struct CustomEditDialogWidget {  
  controller?: CustomDialogController;  
  @State textInputString: string = ""  
  tipString: string = ""  
  textInputConString = (info: string) => {  
  }  
  inputType: InputType = InputType.Normal  
  build() {  
    Column() {  
      Text(`请输入${this.tipString}`).margin({ top: 20 })  
      TextInput({ placeholder: `请输入${this.tipString}` })  
        .width("90%")  
        .backgroundColor(Color.White)  
        .borderWidth(1)  
        .borderColor("#666")  
        .borderRadius(10)  
        .margin({ top: 20 })  
        .defaultFocus(true)  
        .onChange((value: string) => {  
          this.textInputString = value  
        })  
        .type(this.inputType)  
      Row() {  
        Text("取消")  
          .fontColor("#333")  
          .onClick(() => {  
            this.controller?.close()  
          }).padding({ left: 35, right: 35, top: 15, bottom: 15 })  
        Text("|").opacity(0.5).height("100%")  
        Text("确定").fontColor("#000").onClick(() => {  
          if (this.textInputString !== "") {  
            this.textInputConString(this.textInputString)  
          }  
          this.controller?.close()  
        }).padding({ left: 35, right: 35, top: 15, bottom: 15 })  
      }  
      .width("100%")  
      .height(50)  
      .justifyContent(FlexAlign.SpaceAround)  
      .margin({ top: 10 })  
    }.width("90%")  
    .borderRadius(15)  
    .backgroundColor(Color.White)  
    .borderWidth(5)  
    .offset({ x: 0, y: 20}) //2.2、弹窗位置,y等于16的时候刚刚好  
  }  
}