Описание тега intentservice

IntentService is a special implementation of Android service component that handles asynchronous requests (expressed as Intents) on demand, one at a time. The service is started when Intent is received, handles each Intent in turn using a worker thread, and stops itself when it runs out of work.

All requests are handled on a single worker thread -- they may take as long as necessary (and will not block the application's main loop), but only one request will be processed at a time.