Im making a 2d multiplayer game, can u tell me how to sync contacts from gmail, for ex if iam downloading my game app, so i want to sync those contacts from my gmail who has already downloaded that app, like the game clash of clans, in which contacts are synced from facebook. Can u tell me how to connect with gmail and when I signup for the game, I should be visible to my gmail contacts. Kindly tell me if u know the working(coding or method) of this. Thanks!
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