C# 错误：Xamarin.Form中的“com.facebook.sdk.login Error 308”

我正在使用Visual Studio 2017。我试图通过无法连接来使用以下代码连接Facebook。谁能告诉我我错过了什么？我试过许多解决办法，但都不管用

public void LogInToFacebook()
{
    if (AccessToken.CurrentAccessToken == null)
    {
        ObtainNewToken(LogInToFacebook);
        return;
    }
}

获取错误：操作无法完成。com.facebook.sdk.login错误308

private readonly string[] permissions = { "public_profile", "email", "user_birthday", "user_photos" };
private void ObtainNewToken(Action callback)
{
    var login = new LoginManager();

    login.LogInWithReadPermissions(permissions, null, (r, e) =>
    {
        if (e == null && !r.IsCancelled)
            callback?.Invoke();
        else
            HandleError(e?.LocalizedDescription);
    });
}

info.plist:Facebook相关内容

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSExceptionDomains</key>
    <dict>
        <key>myapp.com</key>
        <dict>
            <key>NSTemporaryExceptionMinimumTLSVersion</key>
            <string>TLSv1.0</string>
            <key>NSTemporaryExceptionRequiresForwardSecrecy</key>
            <false/>
            <key>NSTemporaryExceptionAllowsInsecureHTTPLoads</key>
            <true/>
            <key>NSIncludesSubdomains</key>
            <true/>
            <key>NSExceptionAllowsInsecureHTTPLoads</key>
            <true/>
        </dict>
        <key>facebook.com</key>
        <dict>
            <key>NSIncludesSubdomains</key>
            <true/>
            <key>NSThirdPartyExceptionRequiresForwardSecrecy</key>
            <false/>
        </dict>
        <key>fbcdn.net</key>
        <dict>
            <key>NSIncludesSubdomains</key>
            <true/>
            <key>NSThirdPartyExceptionRequiresForwardSecrecy</key>
            <false/>
        </dict>
        <key>akamaihd.net</key>
        <dict>
            <key>NSIncludesSubdomains</key>
            <true/>
            <key>NSThirdPartyExceptionRequiresForwardSecrecy</key>
            <false/>
        </dict>
    </dict>
</dict>

<key>LSApplicationQueriesSchemes</key>
<array>
    <string>fbapi</string>
    <string>fbapi20130214</string>
    <string>fbapi20130410</string>
    <string>fbapi20130702</string>
    <string>fbapi20131010</string>
    <string>fbapi20131219</string>
    <string>fbapi20140410</string>
    <string>fbapi20140116</string>
    <string>fbapi20150313</string>
    <string>fbapi20150629</string>
    <string>fbauth</string>
    <string>fbauth2</string>
    <string>fb-messenger-api20140430</string>
    <string>fb-messenger-api</string>
    <string>fbshareextension</string>
</array>
<key>CFBundleURLTypes</key>
<array>
    <dict>
        <key>CFBundleURLSchemes</key>
        <array>
            <string>fb90000000000</string>
        </array>
        <key>CFBundleURLName</key>
        <string>facebook</string>
    </dict>
</array>
<key>FacebookAppID</key>
<string>8000666666666</string>
<key>FacebookDisplayName</key>
<string>MyApp – Test</string>

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我已解决了上述错误。我只是跟着说：

上面的文章是facebook整合的例子。我们还可以下载该项目并按照文章中给出的方式运行它

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那么，问题是什么！问题是我的facebook.dll，或者我们可以说SDK比较旧。我已经更新了它并更新了info.plist文件，正如我从上述文章下载的演示项目中所给出的。代码没有变化

@Jason的可能副本请仔细阅读问题。我使用的VisualStudio在这个问题上没有建议的解决方案。