*Summary* Here's a breakdown of the 5 layers in Android Architecture, from top to bottom: *1. Application Layer (starts **0:14**):* * Houses both pre-installed system apps and user-downloaded applications. * These apps directly interact with users. * Typically developed in Java or Kotlin. *2. Application Framework Layer (Java API Framework) (starts **1:53**):* * Provides developers with the necessary APIs for app development. * Written primarily in Java, with some components in Kotlin. * *Key Components (starts **2:20**):* * *Activity Manager:* Manages the lifecycle of apps and their activities/fragments. * *Location Manager:* Provides location and positioning services. * *Package Manager:* Handles installation, uninstallation, and permissions of apps. * *Notification Manager:* Allows apps to display custom notifications in the status bar. * *Resource Manager:* Provides access to non-code resources (strings, images, layouts, etc.). * *Telephony Manager:* Manages mobile device functions (SIM, network, etc.). * *Window Manager:* Controls all open windows (each activity uses a window). * *Content Providers:* Enable data sharing between applications. * *View System:* Responsible for building and rendering UI components. *3. System Runtime Layer (starts **5:04**):* * *Two Main Parts:* * *C/C++ Libraries (starts **5:04**):* Provide services to various system components, accessible through the Application Framework. Examples include OpenGL ES, Libc, Media Framework, SQLite, SGL, SSL, FreeType. * *Android Runtime (ART) (starts **7:12**):* Executes apps by converting bytecode to machine code. Offers performance advantages over the older Dalvik Virtual Machine by pre-compiling code upon app installation. *4. Hardware Abstraction Layer (HAL) (starts **9:28**):* * Acts as an interface between the operating system kernel and the device hardware. * Abstracts hardware details to protect manufacturer intellectual property and provide platform independence. * Enables parallel software and hardware testing. *5. Linux Kernel Layer (starts **10:21**):* * Forms the foundation of the Android operating system. * Handles core system services like security, memory management, process management, network stack, and driver model. * Includes Android-specific drivers for hardware components (audio, display, Bluetooth, etc.). i used gemini 1.5 pro to summarize transcript
*Summary*
Here's a breakdown of the 5 layers in Android Architecture, from top to bottom:
*1. Application Layer (starts **0:14**):*
* Houses both pre-installed system apps and user-downloaded applications.
* These apps directly interact with users.
* Typically developed in Java or Kotlin.
*2. Application Framework Layer (Java API Framework) (starts **1:53**):*
* Provides developers with the necessary APIs for app development.
* Written primarily in Java, with some components in Kotlin.
* *Key Components (starts **2:20**):*
* *Activity Manager:* Manages the lifecycle of apps and their activities/fragments.
* *Location Manager:* Provides location and positioning services.
* *Package Manager:* Handles installation, uninstallation, and permissions of apps.
* *Notification Manager:* Allows apps to display custom notifications in the status bar.
* *Resource Manager:* Provides access to non-code resources (strings, images, layouts, etc.).
* *Telephony Manager:* Manages mobile device functions (SIM, network, etc.).
* *Window Manager:* Controls all open windows (each activity uses a window).
* *Content Providers:* Enable data sharing between applications.
* *View System:* Responsible for building and rendering UI components.
*3. System Runtime Layer (starts **5:04**):*
* *Two Main Parts:*
* *C/C++ Libraries (starts **5:04**):* Provide services to various system components, accessible through the Application Framework. Examples include OpenGL ES, Libc, Media Framework, SQLite, SGL, SSL, FreeType.
* *Android Runtime (ART) (starts **7:12**):* Executes apps by converting bytecode to machine code. Offers performance advantages over the older Dalvik Virtual Machine by pre-compiling code upon app installation.
*4. Hardware Abstraction Layer (HAL) (starts **9:28**):*
* Acts as an interface between the operating system kernel and the device hardware.
* Abstracts hardware details to protect manufacturer intellectual property and provide platform independence.
* Enables parallel software and hardware testing.
*5. Linux Kernel Layer (starts **10:21**):*
* Forms the foundation of the Android operating system.
* Handles core system services like security, memory management, process management, network stack, and driver model.
* Includes Android-specific drivers for hardware components (audio, display, Bluetooth, etc.).
i used gemini 1.5 pro to summarize transcript
Awesome content regarding development..
very nice explanation thankyou
Thank You that was really well Explained.!
Nicely Explained
Thank you Ketan :)
Nice breakdown
Nice.. It's very helpful..
android X86 please...
4:07
Nenny