如何使用 Xamarin (C#) 在 Android 上启用 Wifi 区域 (Wifi AP)？答案

【问题标题】：How Can I Enable The Wifi Zone (Wifi AP) On Android Using Xamarin (C#)?如何使用 Xamarin (C#) 在 Android 上启用 Wifi 区域 (Wifi AP)？
【发布时间】：2014-02-18 19:03:36
【问题描述】：

我正在尝试在 Android 上启用 Wifi 区域 (Wifi AP)，但我找不到方法。

实际上我可以启用/禁用 wifi 连接，但不能启用/禁用 AP (Wifi HotSpot)。

我正在开发 Xamarin (C#)，但它在 SDK 上使用相同的 API，因此 java 中的任何示例都会有所帮助。

【问题讨论】：

标签： c# java android xamarin.android android-wifi

【解决方案1】：

前段时间我找到了一种方法，就是这样：

//Enable / Disable Wifi AP
public void SetHotSpot(Boolean On)  {

    WifiManager wifiManager = (WifiManager) context.GetSystemService(Context.WifiService);
    Method[] wmMethods = wifiManager.Class.GetDeclaredMethods();
    WifiConfiguration wifiConfig = new WifiConfiguration();
    Boolean enabled = false;

    //Verify The Wifi AP State And Get The Actual Config
    foreach (Method m in wmMethods) {

        //Get Wifi AP State
        if (m.Name.Equals ("isWifiApEnabled")) {

            enabled = (Boolean) m.Invoke (wifiManager);
        }

        //Get Actual Config And Change Password
        if (m.Name.Equals ("getWifiApConfiguration")) {

            try {

                wifiConfig = (WifiConfiguration)m.Invoke (wifiManager, null);
                Random rand = new Random ();

                wifiConfig.Ssid = "Wifi Name " + rand.Next(0, 10) + rand.Next(0, 10) + rand.Next(0, 10) + rand.Next(0, 10);
                wifiConfig.PreSharedKey = "Password" + rand.Next(0, 10) + rand.Next(0, 10);
            } catch (Exception ex) {

                Log.Info (Activity, "Fail Setting New Wifi Name And Password\n\n" + ex);
            }
        }
    }

    //If Received Flag Is TRUE And Wifi AP Is Disabled, Enable It
    if (On && !enabled) {

        //Start Wifi AP With New Configuration
        foreach (Method m in wmMethods) {

            if (m.Name.Equals ("setWifiApEnabled")) {

                try {

                    m.Invoke (wifiManager, wifiConfig, true);
                } catch (Exception ex) {

                    Log.Info (Activity, "Fail Enabling Wifi AP\n\n" + ex);
                }
                break;
            }
        }
    }

    //If Received Flag Is FALSE And Wifi AP Is Enabled, Disable It
    else if (!On && enabled) {

        foreach(Method method in wmMethods) {

            if(method.Name.Equals("setWifiApEnabled"))  {

                try {

                    method.Invoke(wifiManager, wifiConfig, false);
                } catch (Exception ex) {

                    Log.Info (Activity, "Fail Disabling Wifi AP\n\n" + ex);
                }
                break;
            }
        }
    }
}

【讨论】：