This is the image sequence I use for the activity indicator shown in Checkie for the Apple Watch when checking in.

Since Apple doesn’t provide a stock activity indicator for the Apple Watch, I wrote this to mimic some common modern activity indicators (like this). Each image in the sequence is 10x10@2x and displayed for 25 milliseconds (40fps).

Sample Use:

WKInterfaceImage *activityIndicatorImage = ...;
[activityIndicatorImage setImageName:@"ai"];
[activityIndicatorImage startAnimatingWithImagesInRange:NSMakeRange(0, 40) duration:1.0 repeatCount:0];

I’m not open sourcing the code because it’s inflexible and ugly, it was a means to an end 😄.