Why won't app groups work inside my WatchKit extension?
问题 I've seen all the other posts of SO about sharing NSUserDefaults data between host apps and app extensions, but mine still doesn't work. Here's everything I've done: Enable App Groups on Xcode's "Capabilities" tab for the extension and host app. Set the group name to "group.com.mycompany.foo" and confirmed the extension and host app are added to the group. Confirmed an entitlements file exists for both with the "com.apple.security.application-groups" key set to my app group name. (For what it