HarmonyOS 如何动态的向“页面”里插入一个View

示例参考如下：

import { ComponentContent } from '@ohos.arkui.node'

@Builder
function buildText() {
  Column() {
    Text('hello')
      .width('100%')
      .height(50)
      .backgroundColor(Color.Yellow)
  }
}

@Entry
@Component
export struct FrameNodePage {

  build() {
    Row() {
      Column() {
        Column(){

        }
        .id("mainContainer")
        .height(300)
        .width('100%')
        .borderWidth(1)

        Text("添加元素")
          .align(Alignment.Center)
          .fontSize(20)
          .fontFamily('HarmonyOS Sans')
          .height('100%')
          .onClick(()=>{
            let uiContext = this.getUIContext();
            let root = uiContext.getFrameNodeById("mainContainer");
            let component = new ComponentContent<Object>(uiContext, wrapBuilder(buildText))
            root?.addComponentContent(component);
          });
      }
      .height('100%')
    }
  }

  aboutToAppear(): void {
  }
}
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https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/js-apis-arkui-uicontext-V5#uicontext

https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/js-apis-arkui-framenode-V5#%E8%8A%82%E7%82%B9%E6%93%8D%E4%BD%9C%E7%A4%BA%E4%BE%8B