Flutter在iOS设备上发生“连接服务协议错误:HttpException ..."错误 [英] Flutter occurs 'Error connecting to the service protocol: HttpException...' error on iOS device

问题描述

对于网络连接，我使用 dio 并通过 Connectivity 检查连接状态.

For network connection I use dio and for checking connection state from Connectivity.

在这里，我检查网络状态:

And in here I check network state:

@override
 Widget build(BuildContext context) {

 bloc.checkConnectivity(Connectivity());

 return StreamBuilder(
    stream: bloc.getInitApp,
    builder: (context, AsyncSnapshot<InitApp> initApp) {
      if (initApp.hasData) {
        return prepareMain(initApp.data);
      } else {
        return Center(
          child: CircularProgressIndicator(),
        );
      }
    });
}

checkConnectivity 方法:

checkConnectivity(Connectivity _connectivity) {
 _connectivity.onConnectivityChanged.listen((ConnectivityResult result){
   if (result == ConnectivityResult.mobile ||
       result == ConnectivityResult.wifi) {
       fetchInitApp();
    }
   });
 }

但是最终，App仅在Android设备上运行，而在iOS(Device/Simulator)上发生此错误:

But eventually, App runs just on Android device but on iOS(Device/Simulator) occurs this error :

Error connecting to the service protocol: HttpException: , uri = http://127.0.0.1:1024/ws

我尝试在没有 Connectivity 的情况下调用 Api ，该应用程序运行良好，但仅在Android和iOS中就可以获取数据，但仍然存在问题.

I tried to call Api without Connectivity and the app work as good but with it gets data just in Android and for iOS still there is problem .

它也是通过 Dart http 包发生的.

2019年9月25日

这与代码无关！

问题是系统WiFi连接.

遇到此问题时，请使用此临时解决方案，直到提供完整的解决方案为止:

When you faced with this problem use this temporary solution until a complete solution is provided:

1. 断开系统WiFi连接
2. 拔下电话
3. 将系统重新连接到WiFi
4. 插入手机
5. 运行应用程序

推荐答案

只需将您的设备与IDE重新连接，然后重新启动您的IDE，即可正常工作.

Just reconnect your Device with your IDE and restart as well your IDE, after this it will work.

这篇关于Flutter在iOS设备上发生“连接服务协议错误:HttpException ..."错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！