https://developer.apple.com/design/human-interface-guidelines/ios/system-capabilities/notifications/ Notifications 通知 Apps can use notifications to provide timely and important information anytime, whether the device is locked or in use.…

https://developer.apple.com/design/human-interface-guidelines/ios/system-capabilities/multitasking/ Multitasking マルチタスキング Multitasking lets you quickly switch from one app to another at any time through a multitasking interface on …