以下是一个简单的Flutter应用程序,用于检测iOS设备的网络连接状态和是否允许使用HTTP。 import'package:flutter/material.dart';import'package:connectivity_plus/connectivity_plus.dart';voidmain(){runApp(MyApp());}classMyAppextendsStatelessWidget{@overrideWidgetbuild(BuildContextcontext){returnMaterialApp(title:'Net...
bool?_isConnectionSuccessful;Future<void>_tryConnection()async{try{final response=awaitInternetAddress.lookup('1');setState((){_isConnectionSuccessful=response.isNotEmpty;});}on SocketExceptioncatch(e){setState((){_isConnectionSuccessful=false;});}} 如果设备未连接到互联网,您将收到以下错误。如果给...
class NoInternetConnectionException extends DioError { NoInternetConnectionException(RequestOptions r) : super(requestOptions: r); @override String toString() { return 'No internet connection detected, please try again.'; } } class DeadlineExceededException extends DioError { DeadlineExceededException(Requ...
_isConnectionSuccessful = response.isNotEmpty; }); }onSocketExceptioncatch(e) { setState(() { _isConnectionSuccessful =false; }); } } 如果设备未连接到互联网,您将收到以下错误。如果给定的地址无效,您也会得到同样的错误。 SocketException: Failed host lookup:'1'(OS Error: No address associatedw...
if (!(await CatcherUtils.isInternetConnectionAvailable())) { _printLog("No internet connection available"); return false; } if(requestType==HttpRequestType.post){return_sendPost(error);}returntrue; } _printLog(String log) { if (printLogs) { ...
在App 使用过程中,重启 TCP 连接会带来一些不好的体验,例如等待新的握手、重新开始下载、重建上下文等延迟,而 QUIC 其中就包括解决这一问题的实现,通过 connection migration 实现链路复用,后续我们会详细聊到。 QUIC 其实只要说到 HTTP/3 就离不开 QUIC (Quick UDP Internet Connections),因为 QUIC 是一个通用传...
_plus.dart';// 检测网络状态的方法Future<void>checkConnection()async{varconnectivityResult=await(Connectivity().checkConnectivity());if(connectivityResult==ConnectivityResult.mobile||connectivityResult==ConnectivityResult.wifi){print('Connected to the internet');}else{print('No internet connection');}}...
现在,我们的NetworkStatusService将使用连接包来获取当前连接状态的状态(wifi、移动、无),并在此基础上...
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I/flutter ( 4677): This error happens if you call setState() on a State object for a widget that no longer appears in the widget tree (e.g., whose parent widget no longer includes the widget in its build). This error can occur when code calls setState() from a timer or an anima...