UIDocumentInteractionController

UIActivityViewController

Shared Keychain Access

Custom URL Scheme

Web Service

iCloud API

UIPasteboard

参考

• http://enharmonichq.com/sharing-data-locally-between-ios-apps/
• http://stackoverflow.com/questions/9425706/share-data-between-two-or-more-iphone-applications
• UIDocumentInteractionController Class Reference

iOS App之间传递数据的几种方式