Question

i use to check if a local player authenticated with Game Center with Block of code

if ([[GKLocalPlayer localPlayer] isAuthenticated]) 
{
    NSLog(@"authenticated");
}

this code runs when i first login with GameCenter. When i kill my app and start again it returns NO (Player is not authenticated)

Do i have to login each time when i start the app?
Is there any other solution?

Answer 1

You have to authenticate localPlayer every time your app becomes active but the user only has to input his user/password info the first time. After that it “remembers” who the user is.

Note that the authentication method in iOS 5 is not the same as iOS 6.