flutter插件connectivity


此插件允许Flutter应用程序发现网络连接并相应地进行自我配置。它可以区分蜂窝与WiFi连接。此插件适用于iOS和Android。

添加依赖

dependencies:
  connectivity: ^0.4.2

安装

flutter packages get

实例

用于检查当前状态的示例用法：

import 'package:connectivity/connectivity.dart';

var connectivityResult = await (Connectivity().checkConnectivity());
if (connectivityResult == ConnectivityResult.mobile) {
  // I am connected to a mobile network.
} else if (connectivityResult == ConnectivityResult.wifi) {
  // I am connected to a wifi network.
}

您还可以通过订阅连接插件公开的流来侦听网络状态更改：

import 'package:connectivity/connectivity.dart';

initState() {
  subscription = Connectivity().onConnectivityChanged.listen((ConnectivityResult result) {
    // Got a new connectivity status!
  })
}

// Be sure to cancel subscription after you are done
dispose() {
  subscription.cancel();
}