Notes From Wwdc Extensions Talk
    
    
        
  - separate target
- Needs different entitlement
    
      - isolated address space
- executes independantly
 
- Frameworks - encrypted
- Min deployment target to be ios 8 :(
    
      - App links to framework - change
- all extensions in a framework, not changes
 
- NS_EXTENSION_UNAVAILABLE_IOS
- Sharing data - separate containers
    
  
- Extension and App can be running simultaenously. Synchronize data access
    
      - NSFileCoordination
- coredata
- sqlite
- [NSUserDefaults initWithSuiteName:] Set up shared domain
- Shared keychains - app groups
 
- be stateless, no general multitasking
Action extensions
  - NSExtensionPrincipalClass
- NSExtensionPointIdentifier

  - NSExtensionContext
- - loadItemForTypeIdentifier:options:completionHandler:
