Handling Failures When Submitting a Score
If a score fails to submit, you as the developer are solely responsible for storing the score and resubmitting it when the error has been resolved. Nothing is more frustrating to a user than earning a new high score and losing it due to a network failure. This is also a step that Apple likes to test for during app reviews.
There are many different ways to store the score information for resubmitting it later; however, I feel that the following approach is the easiest for the novice to implement. Feel free to implement your own system if you feel that the provided one does not suit the needs of your app.
We will use NSKeyedArchiver to store our GKScore object for use later. The reason to serialize the ...
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