Android APK扩展文件将不会下载

Question

I have a big issue with the download of an apk expansion file. I have read the tutorial http://developer.android.com/google/play/expansion-files.html and copied the code from the sample. I uploaded everything on the developer console. Also the download won't work. I don't get any error messages. The app starts, the download view appears and nothing else happens. I also tried to debug the app. But all I see is that the App gets the response "NO_DOWNLOAD_REQUIRED" also the file is definitely not available on the device.

EDIT: I just see that when I delete the app and make a fresh build I get the status message "XAPK File Validation Failed". But only for the first start, after that nothing happens. Could it be that the filesize has to be exact?

private static final XAPKFile[] xAPKS = {
            new XAPKFile(
                    true, 
                    1, 
                    508443334L 
            )        
    };

If so how do I get the exact size?

Answer 1

Yes, define exact filesize of obb archive is one of requirements for using expansion APK file.

For windows: open cmd -> move to folder with expansion file -> type "dir" command