A robot convoy wouldn’t get rid of drivers’ jobs. Photograph: Eddie Stobart/PA
Intents, Contracts, and App Extensions: app-to-app communication in Android, Windows Phone and iOS 8 >> Microsoft blogs
Helpful outline from Sasha Goldshetein:Let's now consider a few scenarios and see how they can be handled by the various platforms. But first, how do users gain access to code that provides these extension points? On all three platforms, extensions ship as part of an app, which can provide share targets, a document source, a home screen widget, and so on. After installing an app, the setup steps for enabling the extension depend on the extension kind — for example, sharing to a new app doesn't require explicit configuration, but putting a new widget on your home screen typically requires explicit user consent.Notable how iOS treats processor time (and so battery power) as precious.
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