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Apple Watch App, iOS App Connectivity​

3 ways for communication between iOS Apps and WatchApps

  1. updateApplicationContext(_:)
  2. transferUserInfo(_:)
  3. sendMessage(_:replyHandler:errorHandler:)

프로젝트 구성​

  1. iOS bundle name을 WatchApp Info.plist WKCompanionAppBundleIdentifier key로 등록한다
  2. WatchApp Extension Info.plist에 NSExtension > NSExtensionAttributes > WKAppBundleIdentifier에 key 값에 WatchApp Bundle ID를 등록한다