I'm trying to download data with Firebase. The issue is that I'm downloading the data based off of a timestamp. If their is only one item in my ListView that I'm populating, I want to get the next two hours worth of data from Firebase and if there isn't any data from the last two hours, I want to get the next two hours of data and so on until I get some additional data. The issue is that I don't exactly know how to determine if Firebase actually downloaded data. Because if data was downloaded, I can use an OnScrollListener for my listView to download more data since it will be scrollable after that point. Any help would be appreciated.
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