An application can be defined as a set of instructions that are written in a programming language and executed by the computer. It is also known as an app.
An Android app is a software program that runs on the Android operating system. These apps are written in Java, compiled with the Android Development Kit (ADK), and then converted into an APK file format for distribution to users.
An Android application consists of four components:
- Content Provider
- Broadcast Receiver
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