通知中心
Notification Center on macOS also includes Weather and Stocks widgets, displaying information on the weather at the user's current location, and any stocks that the user has selected in the Stocks application. This feature was not available on iPad or macOS until the release of iOS 7, which added the Weather widget to the iPad's Notification Center. Users could also select the option to display Twitter and Facebook buttons, allowing them to send tweets or update their status directly from Notification Center. In iOS 7, however, the option to send tweets or update Facebook statuses has been removed, and replaced with widgets.