Sharing data between an iOS 8 share extension and main app

Question

Recently, I\'ve been making a simple iOS 8 share extension to understand how the system works. As Apple states in its App Extension Programming Guide:

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Answer 1

I translated in swift foogry's answer and it works!!

Save data:

let shared = NSUserDefaults(suiteName: "nameOfCreatedGroup")
shared("Saved String 1", forKey: "Key1")
shared("Saved String 2", forKey: "Key2")

Read data:

let shared = NSUserDefaults(suiteName: "nameOfCreatedGroup")!
valueToRead1 = shared("Key1") as? String
valueToRead2 = shared("Key2") as? String
println(valueToRead1)   // Saved String 1
println(valueToRead2)   // Saved String 2