Android architecture is a layered design that defines the components and APIs that make up an Android app. It provides a framework for developers to build robust, scalable, and maintainable apps.
Components of Android architecture
The Android architecture consists of the following components:
Linux kernel: The Linux kernel is the lowest layer of the Android architecture. It is responsible for managing the hardware resources of the device, such as the CPU, memory, and storage.
Android runtime: The Android runtime (ART) is a virtual machine that provides an execution environment for Android apps.
Android framework: The Android framework is a collection of APIs that developers can use to build Android apps. The framework provides a wide range of functionality, such as UI widgets, networking, and security.
Android apps: Android apps are built using the Android SDK and the Android framework. Android apps run in their own process and can communicate with each other through the Android framework.
Android app architecture
The Android app architecture is typically divided into three layers:
Presentation layer: The presentation layer is responsible for displaying the UI and handling user input.
Data layer: The data layer is responsible for managing the app's data. This includes fetching data from the device or a remote server, storing data locally, and updating the data as needed.
Business logic layer: The business logic layer is responsible for implementing the app's core functionality. This includes tasks such as validating user input, performing calculations, and updating the model.
The presentation layer, data layer, and business logic layer are typically separated using design patterns such as Model-View-Controller (MVC), Model-View-Presenter (MVP), or Model-View-ViewModel (MVVM). These design patterns help to improve the maintainability and testability of Android apps.
Benefits of using a good Android app architecture
A good Android app architecture provides a number of benefits, including:
Scalability: A well-designed architecture can help to make your app more scalable. This means that your app will be able to handle more users and more data without performance problems.
Maintainability: A good architecture can make your app easier to maintain. This is because the code is better organized and easier to understand.
Testability: A well-designed architecture can make your app easier to test. This is because the code is more modular and easier to isolate.