如何获得Firebase用户uuid

Question

有什么方法可以在用户注销时获取Firebase用户uuid ，但至少以匿名身份登录一次？也许可以从钥匙串访问或Firebase userDefaults获取uuid ？

Answer 1

You can only get the UID if there is a current [FIRAuth auth].currentUser . Any other 'hacky' method to try and retrieve this would not be recommended.

If you wanted to get this after they had logged out you could save this into UserDefaults or the keychain yourself while they are logged in.

Answer 2

You can get it by:

FIRUser *user = [FIRAuth auth].currentUser;
if (user) {
  NSString *uid = user.uid;
}

Hope this help.