56.8 Summary
Android services are a powerful mechanism that allows applications to perform tasks in the background. A service, once launched, will continue to run regardless of whether the calling application is the foreground task or not, and even in the event that the component that initiated the service is destroyed.
Services are subclassed from the Android Service class and fall into the category of either started services or bound services. Started services run until they are stopped or destroyed and do not inherently provide a mechanism for interaction or data exchange with other components. Bound services, on the other hand, provide a communication interface to other client components and generally run until the last client unbinds from the service.
By default, services run locally within the same process and main thread as the calling application. A new thread should, therefore, be created within the service for the purpose of handling CPU intensive tasks. Remote services...
