HarmonyOS 鸿蒙Next 折叠屏系统更新后媒体查询不起作用

import { display, mediaquery, window } from '@kit.ArkUI';
import { common } from '@kit.AbilityKit';
@Entry
@Component
struct MediaQueryExample {
@State text: string = ‘Hello World’;
// 当设备宽度小于1200成立
listener:mediaquery.MediaQueryListener = this.getUIContext().getMediaQuery().matchMediaSync(’(width < 1200px)’);
// 当满足媒体查询条件时，触发回调
onPortrait(mediaQueryResult:mediaquery.MediaQueryResult) {
if (mediaQueryResult.matches as boolean) {
display.getAllDisplays((err, data) => {
let screenWidth: number = data[0].width
let screenHeight: number = data[0].height
console.log('宽度width = ’ + screenWidth)
})
}
}
aboutToAppear() {
// 绑定当前应用实例
// 绑定回调函数
this.listener.on(‘change’, (mediaQueryResult: mediaquery.MediaQueryResult) => {
this.onPortrait(mediaQueryResult)
});
}
aboutToDisappear() {
// 解绑listener中注册的回调函数
this.listener.off(‘change’);
}
build() {
Column({ space: 50 }) {
Text(this.text).fontSize(50)
}
.width(‘100%’).height(‘100%’)
}
}