No, turn to swift ( copy the code ) doesn't solve the problem.
WangHeng0301
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From the state, I believe that saveGameData is already failed, but no error reported(call back with a nil error). Is there anything need to set?
I've done:
login my account to game center
Enable iCloud, login iCloud.
Enable Game Center and iCloud Capbility in XCode, Create and selected a Container