get Download Info
public abstract void getDownloadInfo(String tag, RongIMClient.ResultCallback<DownloadInfo> callback)
Retrieves media file download information.
Note: This method is only applicable for resumable downloads.
Parameters
tag
Unique identifier for the file. If using downloadMediaMessage, this is the messageId string. If using downloadMediaFile, this is the fileUniqueId (first parameter).
callback
Callback