CODEWITHSUNDEEP
watchkitapple-watch
Dawid
Dawid

Reputation: 715

WatchKit: Setting WKInterfaceImage programmatically

I want to set my UIImage to WKInterfaceImage, but the simulator shows only black screen. It works OK using setImageNamed: NSString* method, but not with setImage: UIImage* . My file1.png is added to "(App Name) WatchKit App" folder.

- (void)willActivate {
   [self.imageView1 setImage: [UIImage imageNamed: @"file1"]]; // doesn't work
   [self.imageView1 setImageNamed: @"file1"]; // works OK
    [super willActivate];
}

Thanks!

Upvotes: 10

Views: 4350

Answers (2)

gagarwal
gagarwal

Reputation: 4244

Calling [UIImage imageNamed:imageName] from your extension will always return nil for a cached image. The image is cached on the watch — not in your extension.

Once an image is cached, it allows you to set a WKInterfaceImage using the [WKInterfaceImage setImageNamed:] method.

Upvotes: 1

Jack
Jack

Reputation: 16865

Everything is working as expected.

file1 is in your WatchKit App folder, which means it is on the watch.

Calling [UIImage imageNamed:] loads from the main bundle, which doesn't contain file1, so you get nil.

The way you are doing this is correct. setImageNamed: will look for images on the Watch first, then in the cache.

Upvotes: 14

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