Recently i have met a lot of questions about a problem with uploading say ‘image to firebase’.

This can be done by putFile() method.

according to asynchronous programming concept if the async method returns a value, that value must be in the future.

this putFile() method is returning an UploadTask object to give you a control on the upload process.

How it returns just UploadTask rather than Future<UploadTask> if it’s necessary to await for it when uploading the file.

Example to get the view:

// i don't need any control on the upload process, just upload the image

await putFile(file); // works

Note: Removing await will not upload the image.

While:

// i need to control the upload process

UploadTask ut = putFile(file); // works

Got it, how it can return a value not in the future, while just uploading a file requires await.

I read a bit, the problem not revolving around when or whether the upload task begins or not

Questions that represents that problem: 1 , 2