Is there a way for me to check and see if a user is logged into iCloud when they open the app up? I want to be able to direct them to the settings page if they are not logged in, and if they are logged into iCloud and have used the app before - I want to skip the sign in page....Is there a way for me to check and see if a use
阅读背景：
检查用户是否登录到iCloud中?斯威夫特/ iOS
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