如何使用Swift在Firebase中更新用户的分数？

Question

I have a game. Every user creates an account. Next, after finishing a game, his score suppose to save in a firebase.

Console gives me an error: "*** Terminating app due to uncaught exception 'InvalidPathValidation', reason: '(child:) Must be a non-empty string and not contain '.' '#' '$' '[' or ']''"

ViewController1

ViewController2

Answer 1

You are trying to submit passedInt, integer which is nil and that's why you're getting this error. Try to assign a value to the passedInt, just before you submit it and you will see how everything is fine.

Edit: Next time you have a problem, post the code instead of screenshots.