Custom keyboards in iOS 8: Explained
Custom keyboard extensions, part of iOS 8's new Extensibility feature, allow developers to almost completely replace the default, system-wide iOS keyboard with ones of their own devising. (That's in addition to Apple's own, new QuickType predictive keyboard.) Not only does that include favorites from other platforms, like Swype or SwiftKey, but it opens the door to ones that offer new languages, novel input methods, special options, and more. So, how do the new custom keyboard extensions work?
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