HarmonyOS 接口请求数据后，@State声明的对象不会更新组件

接口请求回来的数据，在LiveModel中赋值但是并不会更新组件LiveModel代码如下：

export class LiveModel {
  private static liveModel: LiveModel
  public data: LiveInfoBean = new LiveInfoBean()

  static getInstance(): LiveModel {

    if (LiveModel.liveModel === undefined) {
      LiveModel.liveModel = new LiveModel()

    }
    return LiveModel.liveModel
  }

  getLiveDetail(liveId: string) {
    VideoAgent.getLiveInfo(liveId, (data: LiveInfoObject) => {
      this.data = data.LiveTelecastDetail
    }, (error: string) => {
    })
  }
}

component代码如下：

@Component
export struct LiveComponent {
  @State model: LiveModel = LiveModel.getInstance()
  @State data: LiveInfoBean = this.model.data
  @State liveUrl: string = this.model.getLiveUrl()

  aboutToAppear(): void {
    let params: CommonParams = this.param as CommonParams
    if (this.param) {
      this.liveId = params.value
      this.model.getLiveDetail(this.liveId)
    }
  }

  build() {
    NavDestination() {

      Image(this.data.img)
        .objectFit(ImageFit.Auto)
        .width("100%")
        .height(210)
        .id("img")
        .margin({
          top: this.realTopHeight
        })
    }
  }
}

LiveInfoBean代码如下：

@Observed
export class LiveInfoBean {
  public img: string = ""
}

网络请求数据解析代码如下：

export class ProjectResultHttpListener<T> implements IHttpListener {
  private onSuccessFunc: (t: T) => void;
  private onFailureFunc: (err: string) => void;

  constructor(onSuccessFunc: (t: T) => void, onFailureFunc: (err: string) => void) {
    this.onSuccessFunc = onSuccessFunc;
    this.onFailureFunc = onFailureFunc;
  }

  onSuccess(stringResult: string): void {
    try {
      let resultObj: ProjectResultBean<T> = JSON.parse(stringResult);
      if (resultObj.errno == 0 || resultObj.error == 0) {
        this.onSuccessFunc(resultObj.data as T);
      } else if ("string" == typeof resultObj.data) {
        this.onFailureFunc(resultObj.data as string);
      } else {
        this.onFailureFunc(resultObj.msg);
      }
    } catch (error) {
      this.onFailureFunc(`error:${error}`);
    }
  }

  onFailure(err: string) {
    this.onFailureFunc(err);
  }
}