Android activity 在后台？
Android activity in background?
我正在开发一个应用程序，它从 activity A（主）开始，通过登录到 activity B，然后是 C，依此类推...
现在，需要在登录时启动某种算法，该算法在应用程序的整个持续时间内循环旋转。是否可以创建一个与可见活动堆栈并行运行（在后台）的 activity？或者还有其他你知道的作案手法吗？
您要找的是 Service。根据文档：
A Service is an application component that can perform long-running
operations in the background and does not provide a user interface.
Another application component can start a service and it will continue
to run in the background even if the user switches to another
application. Additionally, a component can bind to a service to
interact with it and even perform interprocess communication (IPC).
For example, a service might handle network transactions, play music,
perform file I/O, or interact with a content provider, all from the
background.
有关示例和更多信息，请参阅提供的 link。
我正在开发一个应用程序，它从 activity A（主）开始，通过登录到 activity B，然后是 C，依此类推...
现在，需要在登录时启动某种算法，该算法在应用程序的整个持续时间内循环旋转。是否可以创建一个与可见活动堆栈并行运行（在后台）的 activity？或者还有其他你知道的作案手法吗？
您要找的是 Service。根据文档：
A Service is an application component that can perform long-running operations in the background and does not provide a user interface. Another application component can start a service and it will continue to run in the background even if the user switches to another application. Additionally, a component can bind to a service to interact with it and even perform interprocess communication (IPC). For example, a service might handle network transactions, play music, perform file I/O, or interact with a content provider, all from the background.
有关示例和更多信息，请参阅提供的 link。