toUIImage returns nil for iOS

[Danijal98]

I am using the version: 0.23.0
I have the following structure for my images: shared/commonMain/resources/MR/images/ic_partnership.svg

I have a suggested helper method

fun getImageByFileName(name: String): ImageResource {
    val fallbackImage = MR.images.transparent
    return MR.images.getImageByFileName(name) ?: fallbackImage
}

From iOS I call it like this

let imageRes = ResourcesKt.getImageByFileName(name: "ic_partnership") // Successfully finds the resource
let uiImage = imageRes.toUIImage() // returns nil
Image(uiImage: uiImage!).padding() // crashes because "Unexpectedly found nil while unwrapping an Optional value"

[rph8]

Could it be that this an issue with svgs?
.toUIImage seems to work fine for me with pngs, but with svgs I get nil as well.

[Alex009]

svg works in samples. svg on iOS require iOS 13+, check your iOS version please

[Danijal98]

svg works in samples. svg on iOS require iOS 13+, check your iOS version please

I am using the iOS 17, so I think that should not be the issue

[Alex009]

@Danijal98 please test your svg inside xcode project directly. maybe iOS for some reason can't process this svg

[djehrlich]

I’m seeing a similar issue with an SVG file on iOS. Interestingly, while in light mode, I see the image (.toUIImage() returns non-nil). However, when I switch to dark mode, I don’t see the image (.toUIImage() returns nil). Maybe this clue helps?

[rph8]

I’m seeing a similar issue with an SVG file on iOS. Interestingly, while in light mode, I see the image (.toUIImage() returns non-nil). However, when I switch to dark mode, I don’t see the image (.toUIImage() returns nil). Maybe this clue helps?

Is it maybe related to this one (should be fixed in the most recent version / beta)?
#543

[djehrlich]

I’m seeing a similar issue with an SVG file on iOS. Interestingly, while in light mode, I see the image (.toUIImage() returns non-nil). However, when I switch to dark mode, I don’t see the image (.toUIImage() returns nil). Maybe this clue helps?

Is it maybe related to this one (should be fixed in the most recent version / beta)? #543

Dark mode SVG images are indeed working. The comments for #624 provided the insight I needed - add an image resource with “-dark” appended to its name. I tested by copying “car_black.svg” to “car_black-dark.svg” and both light and dark mode now work as advertised.

[Danijal98]

@Alex009 I can confirm that this bug does not occur anymore for me after upgrading to moko 0.24.1