Android OS core topics
From the basic building blocks of an Android device to the more intricate, advanced features, learn about all the ways you can customize the Android OS.
Basics
Learn more about the foundational elements of the Android OS.
system architecture
Architecture
Read about the Android system architecture and each of its constituent pieces.
connectivity
Connect devices
Explore Android connectivity protocols, including Bluetooth, NFC, Wi-Fi.
interaction
Inputs and sensors
Explore how Android processes user inputs from input devices and sensors.
Media & Display
Learn more about graphics, audio, and the Android display.
audio
Audio in Android
Android's audio Hardware Abstraction Layer (HAL) connects audio-specific framework APIs to the audio driver and hardware.
display
Display features
Learn about different features available for the Android display, from app shortcuts to Night Light.
graphics
Graphics
Android offers a variety of graphics rendering APIs for 2D and 3D that interact with graphics drivers.
media
Media playback
Learn about the Android multimedia framework and how applications interact with it.
System Health
Optimize performance, keep the Android OS up-to-date, and ensure quality through thorough testing.
runtime
Android Runtime (ART)
Android Runtime (ART) can improve app performance and simplify debugging.
updates
Optimize system updates
Configure system updates, including over-the-air (OTA) updates and A/B tests for updates.
tests
Develop and design tests
Android offers various tools and test suites to effectively, efficiently, and thoroughly test the Android platform.
Data Storage & Access
Android offers robust data usage, storage, and access control features.
storage
Data storage
Android devices support traditional, on-device storage in addition to portable storage options.
permissions
Access permissions
Android access configurations limit an app’s access to sensitive data.