Photo by Willian Justen de Vasconcellos on Unsplash
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Android Looper and Handler Tutorial

Looper and Handler are one of the Android core components, and many high-level components are built on top of them. Understanding them helps us understand how some core components work. This article will introduce Looper and Handler and related components.
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Android Broadcast Receiver Tutorial

The Android Broadcast Receiver component allows an app to receive messages from the Android system or other apps, and to send messages to other components of the app itself, or to other apps. It is similar to the publish-subscribe design pattern.
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Android Service Tutorial

Android Service is one of the four application components of Android. It can perform longer-running work in the background, such as playing music, downloading files, etc. So Service does not provide user interface. This article will introduce the basic concepts of Service.
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