HarmonyOS 如何在全局任意地方，显示弹窗，并且全局复用统一布局

可参考下面代码：

import { BusinessError } from '@ohos.base';
import { ComponentContent } from "@ohos.arkui.node";
class Params {
  text: string = ""
  constructor(text: string) {
    this.text = text;
  }
}//传参
@Builder
function buildText(params: Params) {
  Row(){
    Column() {
      Text(params.text)
        .fontSize(50)
        .fontWeight(FontWeight.Bold)
        .margin({bottom: 36})
    }.backgroundColor('#FFF0F0F0')
  }
  .height("100%")
} //自定义组件的内容
@Entry
@Component
struct Index {
  @State message: string = "显示TOAST"
  build() {
    Row() {
      Column() {
        Button("click me")
          .onClick(() => {
            let uiContext = this.getUIContext();
            let promptAction = uiContext.getPromptAction();
            let contentNode = new ComponentContent(uiContext, wrapBuilder(buildText), new Params(this.message));//上下文、自定义节点、传参
            try {
              promptAction.openCustomDialog(contentNode);
            } catch (error) {
              let message = (error as BusinessError).message;
              let code = (error as BusinessError).code;
              console.error(`OpenCustomDialog args error code is ${code}, message is ${message}`);
            };
          })
      }
      .width('100%')
      .height('100%')
    }
    .height('100%')
  }
}
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