Youtube api 如何在GCKUIExpandedMediaControlsViewController上启用CC按钮
此Youtube api 如何在GCKUIExpandedMediaControlsViewController上启用CC按钮,youtube-api,youtube-data-api,chromecast,google-cast,google-cast-sdk,Youtube Api,Youtube Data Api,Chromecast,Google Cast,Google Cast Sdk,此GCKUIExpandedMediaControlsViewController的defaultExpandedMediaControlsViewController有一个CC按钮。默认情况下，此CC按钮处于禁用状态。我正试图在YouTube上播放一段视频。带有“currentDetails”的gtlryutubequire\u-VideosList确实返回Bool的caption属性 如何启用此CC按钮
GCKUIExpandedMediaControlsViewControllerdefaultExpandedMediaControlsViewControllerCCCCcurrentDetailsgtlryutubequire\u-VideosListcaptionCC