using System;
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using Android.Content;
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using Android.Net.Wifi;
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namespace Shared.Net
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{
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public class WifiUtil
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{
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/*
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* 切换到指定wifi
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* @param wifiName 指定的wifi名字
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* @param wifiPwd wifi密码，如果已经保存过密码，可以传入null
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* @return
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*/
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public void ConnectToWifi (Action<bool> action, string wifiName, string wifiPwd = null)
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{
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bool result = false;
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try {
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string tempWifiName = "\"" + wifiName + "\"";
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// 如果wifi权限没打开（1、先打开wifi，2，使用指定的wifi
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if (!mWifiManager.IsWifiEnabled) {
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if (!mWifiManager.SetWifiEnabled (true)) {
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return;
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}
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}
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var wifiList = mWifiManager.ConfiguredNetworks;
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var bFindInList = false;
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for (int i = 0; i < wifiList.Count; i++) {
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var wifiInfo0 = wifiList [i];
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// 先找到对应的wifi
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if (tempWifiName == (wifiInfo0.Ssid) || wifiName == (wifiInfo0.Ssid)) {
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bFindInList = true;
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// 1、 先启动，可能已经输入过密码，可以直接启动
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result = doChange2Wifi (wifiInfo0.NetworkId);
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}
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}
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// 2、如果wifi还没有输入过密码，尝试输入密码，启动wifi
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if (!bFindInList) {
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var wifiNewConfiguration = createWifiInfo (wifiName, wifiPwd);//使用wpa2的wifi加密方式
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int newNetworkId = mWifiManager.AddNetwork (wifiNewConfiguration);
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if (newNetworkId == -1) {
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//Log.e (TAG, "操作失败,需要您到手机wifi列表中取消对设备连接的保存");
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} else {
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result = doChange2Wifi (newNetworkId);
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}
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}
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} catch { } finally {
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if (action != null)
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action (result);
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}
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}
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bool doChange2Wifi (int newNetworkId)
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{
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var enableNetwork = mWifiManager.EnableNetwork (newNetworkId, true);
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if (!enableNetwork) {
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//"切换到指定wifi失败";
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return false;
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} else {
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// "切换到指定wifi成功";
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return true;
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}
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}
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/*
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* 创建 WifiConfiguration，这里创建的是wpa2加密方式的wifi
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* @param ssid wifi账号
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* @param password wifi密码
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* @return
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*/
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WifiConfiguration createWifiInfo (string ssid, string password)
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{
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var config = new WifiConfiguration ();
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config.AllowedAuthAlgorithms.Clear ();
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config.AllowedGroupCiphers.Clear ();
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config.AllowedKeyManagement.Clear ();
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config.AllowedPairwiseCiphers.Clear ();
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config.AllowedProtocols.Clear ();
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config.Ssid = "\"" + ssid + "\"";
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config.PreSharedKey = "\"" + password + "\"";
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config.AllowedAuthAlgorithms.Set ((int)WifiConfiguration.AuthAlgorithm.Open);
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config.AllowedGroupCiphers.Set ((int)WifiConfiguration.GroupCipher.Tkip);
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config.AllowedGroupCiphers.Set ((int)WifiConfiguration.GroupCipher.Ccmp);
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config.AllowedKeyManagement.Set ((int)WifiConfiguration.KeyMgmt.WpaPsk);
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config.AllowedPairwiseCiphers.Set ((int)WifiConfiguration.PairwiseCipher.Tkip);
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config.AllowedPairwiseCiphers.Set ((int)WifiConfiguration.PairwiseCipher.Ccmp);
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config.AllowedProtocols.Set ((int)WifiConfiguration.Protocol.Rsn);
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config.AllowedProtocols.Set ((int)WifiConfiguration.Protocol.Wpa);
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config.StatusField = WifiStatus.Enabled;
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return config;
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}
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WifiManager mWifiManager;
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// 单例
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static WifiUtil ourInstance = new WifiUtil ();
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public static WifiUtil Instance {
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get {
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if (ourInstance.mWifiManager == null) {
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ourInstance.mWifiManager = (WifiManager)Shared.Application.Activity.GetSystemService (Context.WifiService);
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}
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return ourInstance;
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}
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}
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}
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}
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