android Framework Developer Interview Questions and Answers

Android architecture consists of four main layers: Linux Kernel, Hardware Abstraction Layer, Android Runtime, and Application Framework.

• Linux Kernel: The foundation of Android, providing core system services like security, memory management, and process management.

• Hardware Abstraction Layer (HAL): Interfaces between the hardware and the Android framework, allowing for hardware-specific implementations.

• Android Runtime (ART): Executes Android applications and provides core libr...read more

The Android boot process involves several stages from powering on to launching the home screen.

• 1. Boot ROM: The initial code executed when the device is powered on.

• 2. Bootloader: Loads the kernel and initializes the hardware.

• 3. Kernel: The Linux kernel is loaded, managing system resources.

• 4. Init Process: The first user-space process that starts system services.

• 5. Zygote: Forks to create app processes and manage memory.

• 6. System Server: Starts core services like Activity Mana...read more