iOS 密码保护设备上的后台唤醒
iOS background wake on password protected device
Apple Doc Understanding When Your App Gets Launched into the Background 说
When password protection is enabled on the device, the system does not
launch an app in the background before the user first unlocks the
device.
每隔几分钟，某些应用程序会在后台唤醒，用户无法继续解锁 iPhone。
当受密码保护的设备不允许应用程序在后台启动时，区域监控应用程序如何在后台唤醒并执行其操作？
Apple doc中写的是什么意思？
我认为你误解了文档。
In most cases, the system does not relaunch apps after they are
force quit by the user. One exception is location apps, which in iOS
8 and later are relaunched after being force quit by the user. In
other cases, though, the user must launch the app explicitly or reboot
the device before the app can be launched automatically into the
background by the system. When password protection is enabled on the
device, the system does not launch an app in the background before the
user first unlocks the device
所以这意味着如果用户强制退出您的应用程序受密码保护iPhone：
如果这是定位服务
=> 用户必须解锁 phone 才能执行后台操作
如果这不是定位服务
=> 用户必须解锁并且启动应用程序一次才能执行后台操作。
无论如何，一旦应用启动一次，后台操作就可以被触发。
Apple Doc Understanding When Your App Gets Launched into the Background 说
When password protection is enabled on the device, the system does not launch an app in the background before the user first unlocks the device.
每隔几分钟，某些应用程序会在后台唤醒，用户无法继续解锁 iPhone。
当受密码保护的设备不允许应用程序在后台启动时，区域监控应用程序如何在后台唤醒并执行其操作？
Apple doc中写的是什么意思？
我认为你误解了文档。
In most cases, the system does not relaunch apps after they are force quit by the user. One exception is location apps, which in iOS 8 and later are relaunched after being force quit by the user. In other cases, though, the user must launch the app explicitly or reboot the device before the app can be launched automatically into the background by the system. When password protection is enabled on the device, the system does not launch an app in the background before the user first unlocks the device
所以这意味着如果用户强制退出您的应用程序受密码保护iPhone：
如果这是定位服务 => 用户必须解锁 phone 才能执行后台操作
如果这不是定位服务 => 用户必须解锁并且启动应用程序一次才能执行后台操作。
无论如何，一旦应用启动一次，后台操作就可以被触发。