Download a zip of images and use it in an app [Xamarin Forms - Android]

Question

Download a zip of images and use it in an app [Xamarin Forms - Android]

Luciano Nicolas SPONTON 1

I'm building an app that works offline so I need to download a zip of images to show them even if there's no internet. Any idea how a can download the zip and then acceses to thoses images and show them?

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Answer 1

Michael Taylor 60,346

Download from where? If you have no network access then the only thing you can use is the local resources.

At this point I don't know what a zip file has to do with this conversations as this applies to any file.

Luciano Nicolas SPONTON 1 Reputation point

2022-03-14T15:12:49.557+00:00

When the phone has internet you can download the zip but then when the phone doesn't have internet (because you don't have wifi or internet signal) the app will use the images from the zip.
Michael Taylor 60,346 Reputation points

2022-03-14T15:18:57.413+00:00

OK so your question isn't about downloading when you don't have INet access as that is irrelevant here. You have downloaded a zip file of images and you want to use them in some cases for your app.

You didn't specify how you intend to use them such as displaying in a WPF listview or on a product detail page so the actual code can vary. But ultimately you just need to extract the images to a temp location. You can extract the images using ZipFile.ExtractToDirectory. Once the files are on disk then you can use them like you would any other image on disk. Again, that depends upon how you're trying to use them.
Luciano Nicolas SPONTON 1 Reputation point

2022-03-14T15:21:38.563+00:00

Sorry I was talking about [Xamarin Forms - Android]
Michael Taylor 60,346 Reputation points

2022-03-14T15:26:49.683+00:00

In that case ZipFile isn't available. Here's a gist of how to do the equivalent the long way.

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Download a zip of images and use it in an app [Xamarin Forms - Android]

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