Subhas Prabhu
Getting session URI from shapshot:
https://firebase.google.com/docs/reference/android/com/google/firebase/storage/UploadTask.TaskSnapshot.html#public-uri-getuploadsessionuri-
and using the snapshot URI for uploading:
https://firebase.google.com/docs/reference/android/com/google/firebase/storage/StorageReference#public-uploadtask-putfile-uri-uri,-storagemetadata-metadata,-uri-existinguploaduri
This would help uploading a file from where it left off when the app was killed