HarmonyOS app如何实现毛玻璃效果

后续将不会更改此功能，可以用以下代码实现：

import { router, window } from '@kit.ArkUI';
@Entry
@Component
struct AAA {
  @State message: string = 'Hello World';
  @State flag: boolean = false
  onPageShow(): void {
    let windowStage = AppStorage.get("windowStage") as window.WindowStage;
    windowStage.on("windowStageEvent", (data) => {
      if (data === window.WindowStageEventType.PAUSED) {
        this.flag = true
      } else {
        this.flag = false
      }
    })
  }
  build() {
    Row() {
      Column() {
        Text(this.message) .fontSize(50) .fontWeight(FontWeight.Bold)
      }
      .width('100%') }
    .height('100%')
    .foregroundBlurStyle(this.flag ? BlurStyle.Thin : BlurStyle.NONE, { colorMode: ThemeColorMode.LIGHT, adaptiveColor: AdaptiveColor.DEFAULT })
  }
}

这个针对单个页面，全局的话只有用setWindowPrivacyMode接口。