与台式机应用程序一样在登录时获取用户ID选择屏幕，而不是每次都输入用户ID

Question

使用iOS ADAL SDK，如何与台式机应用程序一样在登录时获取用户ID“选择”屏幕，而不是每次都输入用户ID？

我能够分析的唯一与此相关的是ADPromptBehavior。但是SDK中的注释对我要查找的内容没有任何选择。

typedef enum
{
    /*!
        Default option. Users will be prompted only if their attention is needed. First the cache will
        be checked for a suitable access token (non-expired). If none is found, the cache will be checked
        for a suitable refresh token to be used for obtaining a new access token. If this attempt fails
        too, it depends on the acquireToken method being called.
        acquireTokenWithResource methods will prompt the user to re-authorize the resource usage by providing
        credentials. If user login cookies are present from previous authorization, the webview will be
        displayed and automatically dismiss itself without asking the user to re-enter credentials.
        acquireTokenSilentWithResource methods will not show UI in this case, but fail with error code
        AD_ERROR_USER_INPUT_NEEDED.
     */
    AD_PROMPT_AUTO,

    /*!
        The user will be prompted explicitly for credentials, consent or any other prompts, except when the
        user has Azure Authenticator installed. This option is useful in multi-user scenarios. Example is
        authenticating for the same e-mail service with different user.
     */
    AD_PROMPT_ALWAYS,

    /*!
        Re-authorizes (through displaying webview) the resource usage, making sure that the resulting access
        token contains updated claims. If user logon cookies are available, the user will not be asked for
        credentials again and the logon dialog will dismiss automatically. This is equivalent to passing
        prompt=refresh_session as an extra query parameter during the authorization.
     */
    AD_PROMPT_REFRESH_SESSION,

    /*!
        If Azure Authenticator is installed forces it to prompt the user, otherwise has the same behavior as
        AD_PROMPT_ALWAYS.
     */
    AD_FORCE_PROMPT,
} ADPromptBehavior;

Answer 1

[在GitHub存储库中发现了与ADAL相关的未解决问题。似乎在select_account的.NET版本中有一个名为ADAL的提示值，目前在iOS版本中不存在。

但是，可以通过在prompt=select_account参数中传递extraQueryParameters来实现。

参考：https://github.com/AzureAD/azure-activedirectory-library-for-objc/issues/1379