HarmonyOS 鸿蒙Next 把语言数组的值存在数据首选项后再取，存时不能实时更新，需多次开启-关闭应用复现

@Observed
export class Language {
  lanager: string;
  zhName: string;
  speek: boolean;
  lyon: boolean; // 蓝牙
  skon: boolean; // 扬声器
  constructor(lanager: string, zhName: string, speek: boolean, lyon: boolean, skon: boolean) {
    this.lanager = lanager;
    this.zhName = zhName;
    this.speek = speek;
    this.lyon = lyon;
    this.skon = skon;
  }
}

@Component
struct LanguageItem {
  @ObjectLink item: Language;
  @Consume languageList: Language[]

  build() {
    Row() {
      Text(this.item.lanager)
        .fontColor(’#fff’)
      if (this.item.speek) {
        Image($r(‘app.media.translate_play’))
          .width(30)
      }
    }
    .backgroundColor(’#2B82B4’)
    .height(20)
    .borderRadius(5)
    .padding({
      left: 5,
      right: this.item.speek ? 0 : 5
    })
    .onClick(() => {
      this.item.speek = !this.item.speek
      console.log(‘语言数组-存’, JSON.stringify(this.languageList))
      PreferencesUtil.putPreferenceValue(‘MyPreferences’, ‘languageList’, JSON.stringify(this.languageList))
    })
  }
}

@Entry
@Component
struct Parent {
  @Provide languageList: Language[] =
    [new Language(‘SYS’, ‘跟随系统’, true, false, true), new Language(‘EN’, ‘英语’, true, false, true)];

  async aboutToAppear(): Promise<void> {
    const languageListTem = await PreferencesUtil.getPreferenceValue(‘MyPreferences’, ‘languageList’, ‘’) as string;
    if (languageListTem) {
      const tem: Language[] = JSON.parse(languageListTem);
      this.languageList = tem.map((item: Language) => {
        return new Language(item.lanager, item.zhName, item.speek, item.lyon, item.skon);
      })
    }
    console.log(‘语言数组’, JSON.stringify(this.languageList))
  }

  build() {
    Row({ space: 3 }) {
      ForEach(this.languageList, (item: Language) => {
        LanguageItem({
          item: item
        })
      }, (item: Language) => JSON.stringify(item))
    }
    .margin({
      top: 50
    })
  }
}