how would I go about loading an image from a test directory kotlinlang #getting-started

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Title

Cath

04/23/2021, 11:00 AM

how would I go about loading an image from a test directory's resources in kotlin? Tried it using the class loader but ran into a NPE:

var byteArray = this::class.java.classLoader.getResource("abc.jpg").readBytes()

Jonathan Olsson

04/23/2021, 11:51 AM

Not sure if the folder should be named

resources

, not

res

Cath

04/23/2021, 11:53 AM

not sure it matters, it's marked as resource directory and the one I use for the src dir has the shortened name too

Timo Gruen

04/23/2021, 12:17 PM

What build system are you using? Anything like Gradle? Generally speaking you can use:

var byteArray = this::class.java.classLoader.getResource("/abc.jpg").readBytes()

(Note the absolute path of the resource)

Generally speaking the

res

directory should be named

resources

, which is the convention for such directories. If you are using gradle, this is the one being picked up by gradle while building and running your code.

Cath

04/23/2021, 12:18 PM

Yea, Gradle w the Kotlin DSL. I'll try that again but I think I experimented with both to no avail. It's a KMM project if that makes a difference, currently only working on the androidApp module though

Timo Gruen

04/23/2021, 12:20 PM

So test 1. Having a absolute path (

/abc.jpg

) 2. Rename

res

resources

If its still not working, just ping me and we ll see if I can help you somehow.

Cath

04/23/2021, 12:20 PM

Oh actually changing the name from res seems to have fixed it, without absolute path. Thanks!

👍 2

Nick Howes

04/24/2021, 6:27 AM

Without the starting slash in the path it will be relative to the class doing the lookup, so e.g. if you are loading from com.example.app.MyClass then the file would need to be at

resources/com/example/app/abc.jpg

☝️ 1

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