HarmonyOS State的变量无法监听到值的变化？

Question

ILoginUiService.instance()?.getAccountSelectComponent().builder({
  visible: this.param.visible
})

@State param: AccountDialogData = new AccountDialogData();
@Observed
export class AccountDialogData {
  visible: boolean = false;
}

getAccountSelectComponent(): WrappedBuilder<[AccountDialogData]> {
  return wrapBuilder(AccountSelectComponentBuilder)
}
}

@Builder
function AccountSelectComponentBuilder(accountDialogData: AccountDialogData) {
  AccountSelectMiddleView({ accountDialogData: accountDialogData });
}

在AccountSelectMiddleView中无法监听到AccountDialogData.visible.的变化？请问是哪里弄错了。

Answer 1

可以参考文档：https://developer.huawei.com/consumer/cn/doc/harmonyos-guides-V5/arkts-state-V5\#观察变化和行为表现

数据传递可以通过router.getParams()接收参数：

onPageShow() {
  this.routerParams = router.getParams() as Record<string, string>
  if (this.routerParams !== undefined && this.routerParams !== null) {
  } else {
  }
}

参考文档：https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/js-apis-router-V5\#routergetparams