Download video like whatsApp does in chat screen

Question

I am developing chat application. Currently i have implemented all functionality in chat screen. For sending image , video and text. I can able to download image.

Now i want to download videos like whatsapp does. For eg, when click on download video and navigate to other screen and back to chat screen that video downloading.

My question is that what functionality whatsApp uses for downloading videos?

I can able to download video simply using BroadcastReceiver . But i need same functionality same as whatsApp.

Advanced help would be appreciated !

Answer 1

You can write separate DownloadManager class. It should be singleton.

All the work related to downloading any file will be done by this Manager. It will also hold state of the downloading file.

So next time user come into that chat screen, You will need to ask DownloadManager about state of that and it will return that.