this project is mainly for developers

Download Manager for multiple files
has notification for each download
which has
progress bar & pause and cancel buttons .

you can change download location path .

you can download files in parallel or one after other .

you can show notifications or hide them .

it is open source at

https://github.com/omar-adel/MultiDownloadManager2 .

This code show usage of :

1 - Thanks to

https://github.com/MindorksOpenSource/PRDownloader

I used this Repository in this app as prdownloader package for multi download and modified it .

2 - DBFlow for sqlite operations https://github.com/Raizlabs/DBFlow

3 - tab layout by https://github.com/ogaclejapan/SmartTabLayout

4 - choose directory by https://github.com/Angads25/android-filepicker