How to convert Data to URL()?

Question

I have an image in the form of Data obtained from firebase:

if let img = selectedPost.media[numberMedia + 1].image {
    let data = (img.pngData() as Data?)!//here

I need to convert this value into a URL. How can I do that?

I have tried:

let imageUrl = URL(dataRepresentation: data, relativeTo: "https://URL")

but get

Cannot convert value of type 'String' to expected argument type 'URL?'

Edit:

What am I trying to active: I should add that I need this URL in order to reupload to firebase. Now that I think about it it seems like it's not possible given that the URL on DB side needs to point to a storage spot. Maybe you could recommend a course of action here? Should i fetch the URL at that spot and read it?

Answer 1

No you can't create a URL from data , only if this url is pointing to a local storage such as file url in documents / library , So you have

• Remote url - > read data from it

• local data -> write to local url

• local data -> upload to server and get a remote url referring to it

• X local data -> get remote url locally without uploading X > can't be

Also use

guard let data = img.pngData() else { return } 

instead of the un safe !