WKImage always return nil

问题

Access assets image will always return nil, below is my code and assets catalog screen shot.

let image = WKImage(imageName: "sample")
print(image.image)

This will always prints nil.

Update: Updated screen shot

回答1:

I found that from your screenshot you are setting the Image Set in Assests.xcassets in the swiftWatch WatchOS target and i think you are use that image for the WKDemo target so you get that nil.

Set that Image Set in your WKDemo's Assests.xcassets instead of WatchOS's Assests.xcassets then check.

That issue is your are setting ImageSet in different Target and your are try to load in Different Target.

UPDATE

After checking your sample project you are doing wrong code for getting image. Instead of let image = WKImage(imageName: "sample") you must be use WKPickerItem() object like following code:

 for i in 1...10 {
            let item = WKPickerItem()
            item.title = "Picker itme =\(i)"
            item.contentImage = WKImage(imageName: "sample")

            if let image = item.contentImage
            {
             print(image)
            }
            pickerItems.append(item)
        }

OUTPUT IS

来源：https://stackoverflow.com/questions/37984502/wkimage-always-return-nil