What is the use of service in Android?

Services in Android are a special component that facilitates an application to run in the background in order to perform long-running operation tasks . The prime aim of a service is to ensure that the application remains active in the background so that the user can operate multiple applications at the same time.15 Eyl 2020

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What is background and foreground?

A priority assigned to programs running in a multitasking environment. The foreground contains the applications the user is working on, and the background contains the applications that are behind the scenes , such as certain operating system functions, printing a document or accessing the network.

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