如何实现弹窗和软键盘的避让

@Entry 
@Component 
struct Main4 { 
  @State isShow: boolean = false 
  
  @Builder 
  myBuilder() { 
    Column() { 
      Button("关闭半模态").onClick(()=>{ 
        this.isShow = false 
      }) 
      TextInput() 
    } 
    .expandSafeArea([SafeAreaType.SYSTEM,SafeAreaType.KEYBOARD], [SafeAreaEdge.TOP, SafeAreaEdge.BOTTOM]) 
    .borderRadius(10) 
    .width("100%") 
  } 
  
  build() { 
    Column() { 
      Button('click me 打开半模态') 
        .onClick(() => { 
          this.isShow = !this.isShow 
        }) 
    } 
    .expandSafeArea([SafeAreaType.SYSTEM,SafeAreaType.KEYBOARD], [SafeAreaEdge.TOP, SafeAreaEdge.BOTTOM]) 
    .bindSheet($$this.isShow, this.myBuilder(), { height: 400}) 
    .justifyContent(FlexAlign.End) 
    .width('100%') 
    .height('100%') 
  } 
}