Firebase_admob在Ios设备上出现错误的作业

Question

我在项目中使用rxDart包，并以流的形式从服务器获取数据，添加了firebase_admob并在应用程序中显示广告，但是当横幅广告改变时，我的流将自动启动。 为什么这样？

我尝试了从其他地方调用FirebaseAdMob

@override
initState() {
super.initState();
bloc.loginUser();
bloc.onPositionChanged();
bloc.inAnimate.add(false);
bloc.inMapZoom.add(18.0);
bloc.inScreenVisible.add(Screen.main);
bloc.pushNotification();
FirebaseAdMob.instance.initialize(appId: appId);
bloc.adsBanner();
}

StreamBuilder<ReportData>(
        stream: bloc.outAllVicinity,
        builder: (context, vicinitySnapshot) {
          if (vicinitySnapshot.hasData) {
            if (vicinitySnapshot.data != null) {
              _setReportsList(vicinitySnapshot.data);
              return Positioned(
                  top: 8.0,
                  child: Text(("all reports 
${vicinitySnapshot.data.data.length}")));
            } else {
              return Positioned(
                  top: 8.0,
                  child: Text(("${vicinitySnapshot.data.error} "
                      )));
            }
          }
          if (vicinitySnapshot.error != null) {
            return Positioned(
                top: 8.0, child: Text("Some trouble in 
outAllVicinity"));
          }
          return Container();
        },
      ),
      StreamBuilder<ReportData>(
        stream: bloc.outInVicinity,
        builder: (context, inVicinitySnapshot) {
          if (inVicinitySnapshot.hasData) {
            _setReportsListFindQuest(inVicinitySnapshot.data);
            return Positioned(
                top: 20.0,
                child: Text((" invicinity reports 
${inVicinitySnapshot.data.data.length} "
                    "\n markers count ${markers.length}")));
          }
          return Container();
        },
      ),

每次广告更改时，数据都会自动从流中传给我。