您可以使用下面的代码来检查您的设备上是否启用了Tethering：

private static Method isWifiApEnabledMethod;

public static boolean isWifiApEnabled(WifiManager wifiManager) {
    if (isWifiApEnabledMethod == null) {
        try {
            isWifiApEnabledMethod = wifiManager.getClass().getDeclaredMethod("isWifiApEnabled");
            isWifiApEnabledMethod.setAccessible(true); //in the case of visibility change in future APIs
        } catch (NoSuchMethodException e) {
            Log.w(TAG, "Can't get method by reflection", e);
        }
    }

    if (isWifiApEnabledMethod != null) {
        try {
            return (Boolean) isWifiApEnabledMethod.invoke(wifiManager);
        } catch (IllegalAccessException e) {
            Log.e(TAG, "Can't invoke method by reflection", e);
        } catch (InvocationTargetException e) {
            Log.e(TAG, "Can't invoke method by reflection", e);
        }
    }

    return false;
}

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不要忘记在AndroidManifest.xml中添加以下权限

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>

型

• 对于上面提到的SO link：*

此功能不可用即尚未实现。有关详细信息，请查看this链接，其中Google官方将状态标记为 * 状态：无法修复（Obsessive）*