Downloading Images in SwiftUI

In this video, Mohammad Azam will demonstrate how to download images in SwiftUI by building a SwiftUI custom Image view.

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[bssgkmsd]

Absolutely excellent tutorial. 👍🏻
Thank you very much.

[abdou]

Let's say I'm getting the image url from a json file. After decoding the data of that json file how should I call this function "downloadImage" that downloads the image?

[yokohibarashi]

Have followed you tutorials and they're great. I need some help with Image(uiImage: UIImage(data: data)!) I get a Fatal error: Unexpectedly found nil while unwrapping an Optional value.! Any help would be appreciated.

[wmblemania]

Good video, thanks.
Regarding the use of bang and UIImage... it is possible that the downloaded data is an invalid image for some reason. The server, database, universe might be having a a bad day.
Therefore, I suggest that instead of the Image Service providing plain data, it should always provide a fully valid UIImage instance. (Or, a soft error is produced.)
Speaking of URLs, I suggest that all call sites are required to pass in a (fully validated) URL, rather than a string. (If the URL creation fails, it's a programmer error.) This reduces a lot of ambiguity along the chain.
Regards.

[ashim]

Its absolutely not safe to force unwrap, especially when you are getting object from service. The first thing is the data is not always 100 % reliable. In your case you are also not checking if image data is of type URL. Checking for string object don't always guarantee for valid URL. Please use optional binding. You can also use Throw statement in case to get this information in Log which is handy for debugging.