问题
Noticing something strange with the cast dialog. Using the MediaInfo.Builder to prepare MediaInfo for a call to RemoteMediaClient.load(mediainfo), if the same image URL is used for MediaMetaData.addImage this time as was used in the prior call the image does not show up in the dialog. Any ideas?
来源：https://stackoverflow.com/questions/42348635/android-mediametadata-image-for-cast-dialog