*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
wow this is best explanation. Thank you so much.
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