Game Center排行榜得分仅在应用恢复时更新

Question

I've got a Game Center leaderboard in my game that I display using my own GUI using data retrieved from the GKLeaderboard loadScoresWithCompletionHandler method.

I report new scores using the GKScore reportScoresWithCompletionHandler method. My issue is that when I report a new high score for the local player, when I open up my leaderboard GUI (which forces loadScoresWithCompletionHandler to be called), the player score isn't updated - it's displaying the old one he just beat.

But if I close(not kill) the game and then reopen it and open up the GUI again, hey-presto, the new score is shown.

This tells me that there must be some form of internal caching going on in GameKit that gets reset when the app resumes. I do know that upon the app resuming, GC calls my authenticationHandler to let me know that it has re-authenticated the player so maybe something in that method wipes whatever internal cache is set?

This is the first game I've worked on where I am displaying Game Center data using a custom UI and not the native GC view controller which I've never had this problem with. Has anyone had similar experience with this and could tell me why GKLeaderboard loadScoresWithCompletionHandler gives me old data?

Answer 1

I was having the same issue and it gave me sleepless night especially seeing no answer related to it on stackoverflow and other forums. Then, i found somewhere that they were reporting new score whenever the level gets completes. And I changed the button from submit leaderboard to show leaderboard, it resolved the issue. I am using GC view controller. and i was only calling showleaderboard as it was a non-custom leaderboard.