This document provides an overview of debugging and development for the Android platform. It discusses the architecture basics, setting up a development environment in Android Studio, tools for observing and monitoring the system like logcat and dumpsys, interfacing with the framework, working with AOSP sources, symbolic debugging with gdb and gdbserver, detailed dynamic data collection using tools like ftrace and perf, and benchmarking. The document also provides guidance on debugging challenges and lists additional topics like debuggerd, tombstones, and ANR traces.
Android Platform Debugging and DevelopmentOpersys inc.
This document provides an overview and agenda for a presentation on Android platform debugging and development. It covers debugging architecture basics, setting up a development environment in Android Studio, tools for observing and monitoring apps and frameworks, interfacing with core Android components, working with AOSP sources, and dynamic data collection techniques like logging, strace, ftrace, and perf. Symbolic debugging with gdb/gdbserver and challenges with systrace/atrace are also discussed.
Embedded Android Workshop with MarshmallowKarim Yaghmour
Embedded Android workshops provide concise summaries of technical documents in 3 sentences or less. The summarized document discusses the history and evolution of Android, the key features of embedded Android platforms, and an overview of the Android architecture and development process. It covers topics such as the Android ecosystem, legal framework, hardware requirements, and concepts including components, intents, and the component lifecycle.
Embedded Android Workshop with MarshmallowOpersys inc.
The document provides an overview of embedded Android, including:
- Features of Android such as the application framework, Dalvik VM, browser, graphics library, SQLite, media support, Bluetooth, and hardware dependent components.
- A brief history of Android from its origins at Danger Inc. to being acquired by Google and the various releases from 2008 to the present.
- Details about the Android ecosystem including its large user base, number of apps, and companies involved in its development and on devices.
- The legal framework around Android including code access, licenses, branding, Google's apps, alternative app stores, and the Oracle vs Google lawsuit.
- Platform and hardware requirements for running Android, including the
Android Platform Debugging and DevelopmentOpersys inc.
This document provides an overview of debugging and development tools for the Android platform. It discusses setting up the development environment in Android Studio and explores tools for observing system behavior like logcat and dumpsys. Symbolic debugging with gdb and gdbserver is covered as well as dynamic tracing tools like ftrace. The document concludes with suggestions for benchmarking and performance analysis.
Android Platform Debugging and DevelopmentOpersys inc.
This document provides an overview of debugging and development tools for the Android platform. It begins with an introduction to Android architecture basics like hardware components, the Android Open Source Project (AOSP), and system services. It then discusses development environments, observing and monitoring tools for the native, framework, and app layers. The document also covers interfacing with the Android framework, working with AOSP source code, symbolic debugging, performance profiling, and benchmarking.
The document provides an overview of embedded Android, including its history, ecosystem, legal framework, hardware requirements, and development tools. It discusses the basics of Android including features, user experience concepts, and app concepts. It also covers Android concepts such as components, intents, and component lifecycles.
Embedded Android Workshop with Nougat
The document provides an overview of an embedded Android workshop on Nougat. It discusses key Android concepts like components, intents and manifest files. It also covers Android's history and ecosystem, the open source code and licenses, hardware requirements for running Android, and development tools. The workshop aims to help attendees learn about features, internals, and development for embedded Android systems.
Android Platform Debugging and DevelopmentOpersys inc.
This document provides an overview of debugging and development tools for the Android platform. It discusses setting up the development environment in Android Studio and explores tools for observing system behavior like logcat and dumpsys. Symbolic debugging with gdb and ftrace for dynamic tracing are covered. The document also summarizes benchmarking tools and concludes by discussing challenges with systrace and perf on Android.
Android Platform Debugging and DevelopmentOpersys inc.
This document provides an overview and agenda for a presentation on Android platform debugging and development. It covers debugging architecture basics, setting up a development environment in Android Studio, tools for observing and monitoring apps and frameworks, interfacing with core Android components, working with AOSP sources, and dynamic data collection techniques like logging, strace, ftrace, and perf. Symbolic debugging with gdb/gdbserver and challenges with systrace/atrace are also discussed.
Embedded Android Workshop with MarshmallowKarim Yaghmour
Embedded Android workshops provide concise summaries of technical documents in 3 sentences or less. The summarized document discusses the history and evolution of Android, the key features of embedded Android platforms, and an overview of the Android architecture and development process. It covers topics such as the Android ecosystem, legal framework, hardware requirements, and concepts including components, intents, and the component lifecycle.
Embedded Android Workshop with MarshmallowOpersys inc.
The document provides an overview of embedded Android, including:
- Features of Android such as the application framework, Dalvik VM, browser, graphics library, SQLite, media support, Bluetooth, and hardware dependent components.
- A brief history of Android from its origins at Danger Inc. to being acquired by Google and the various releases from 2008 to the present.
- Details about the Android ecosystem including its large user base, number of apps, and companies involved in its development and on devices.
- The legal framework around Android including code access, licenses, branding, Google's apps, alternative app stores, and the Oracle vs Google lawsuit.
- Platform and hardware requirements for running Android, including the
Android Platform Debugging and DevelopmentOpersys inc.
This document provides an overview of debugging and development tools for the Android platform. It discusses setting up the development environment in Android Studio and explores tools for observing system behavior like logcat and dumpsys. Symbolic debugging with gdb and gdbserver is covered as well as dynamic tracing tools like ftrace. The document concludes with suggestions for benchmarking and performance analysis.
Android Platform Debugging and DevelopmentOpersys inc.
This document provides an overview of debugging and development tools for the Android platform. It begins with an introduction to Android architecture basics like hardware components, the Android Open Source Project (AOSP), and system services. It then discusses development environments, observing and monitoring tools for the native, framework, and app layers. The document also covers interfacing with the Android framework, working with AOSP source code, symbolic debugging, performance profiling, and benchmarking.
The document provides an overview of embedded Android, including its history, ecosystem, legal framework, hardware requirements, and development tools. It discusses the basics of Android including features, user experience concepts, and app concepts. It also covers Android concepts such as components, intents, and component lifecycles.
Embedded Android Workshop with Nougat
The document provides an overview of an embedded Android workshop on Nougat. It discusses key Android concepts like components, intents and manifest files. It also covers Android's history and ecosystem, the open source code and licenses, hardware requirements for running Android, and development tools. The workshop aims to help attendees learn about features, internals, and development for embedded Android systems.
Android Platform Debugging and DevelopmentOpersys inc.
This document provides an overview of debugging and development tools for the Android platform. It discusses setting up the development environment in Android Studio and explores tools for observing system behavior like logcat and dumpsys. Symbolic debugging with gdb and ftrace for dynamic tracing are covered. The document also summarizes benchmarking tools and concludes by discussing challenges with systrace and perf on Android.
Embedded Android Workshop with MarshmallowOpersys inc.
The document provides an overview of embedded Android, including its features, history, ecosystem, legal framework, platform requirements, and development tools. It discusses Android's application framework, virtual machine, integrated browser, graphics library, SQLite database, media support, telephony, Bluetooth, WiFi, camera, GPS, and development environment. It also covers Android's history and releases from 2008 to 2016, the Open Handset Alliance members, code access policies, licenses, branding rules, Google's apps, alternative app stores, and the Oracle v. Google lawsuit.
1. The document discusses tools for Android platform development and proposes a new architecture using Node.js, Express, and JavaScript for building lightweight monitoring tools.
2. It describes initial pain points such as looking up AIDL files and monitoring processes/filesystem, and demonstrates a tool called Raidl that returns AIDL interfaces.
3. The proposed architecture uses a Node.js backend with Express and a Backbone.js frontend, allowing tools to be built for process monitoring, file browsing, and analyzing Binder relationships between services.
Embedded Android Workshop with LollipopOpersys inc.
Embedded Android workshops teach developers about customizing Android for embedded devices. Key topics covered include Android's open source ecosystem, legal framework for commercial use, hardware requirements for compliance, and development tools. The introductory session provides an overview of Android's features and history, as well as the roles of major companies in its development.
The document provides an overview of embedded Android, including:
1. It discusses the history and evolution of Android from 2002 to the present, highlighting major versions.
2. It describes the Android ecosystem, which includes over 2 billion active devices worldwide, 2.7 million apps, and Android having 88% of the global smartphone market share.
3. It covers the legal framework for Android, including code access, licenses, branding use, Google's apps, alternative app stores, and the Oracle v. Google lawsuit.
Android Platform Debugging and DevelopmentOpersys inc.
This document provides an overview and agenda for a presentation on Android platform debugging and development. It covers:
1. An introduction to Android architecture basics like hardware, AOSP, Binder and system services.
2. Setting up the development environment, including host/target systems, IDEs like Android Studio, and exploring the AOSP sources.
3. Tools for observing and monitoring at the native, framework and overall system level, including logcat, dumpsys, and third party apps.
4. Interfacing with the framework using commands like am, pm and wm, and service calls.
5. Tips for working with the AOSP source code using make targets and other build tools.
This document provides an overview of memory management in Android. It discusses the kernel's role in managing physical memory and virtual address spaces. It covers key kernel interfaces like memory-mapped registers and DMA. It also discusses low-memory conditions and tools for analyzing memory usage at the kernel, native, and app levels, including procfs, dumpsys, and DDMS. The document recommends strategies for app developers to measure and reduce memory consumption.
Embedded Android Workshop with LollipopOpersys inc.
Embedded Android workshops teach developers about building Android applications for embedded devices. The document introduces key Android concepts like components, intents, and permissions. It describes Android's architecture including the startup process from bootloader to system server. The document also covers the Linux kernel, hardware support through HAL modules, and developing native code using the Android NDK.
Treble introduces several changes to standardize and streamline the Android upgrade process for OEMs and carriers. These include defining hardware interfaces with HIDL, restricting vendor customization with VNDK, and adding a vendor interface and test suite (VINTF and VTS) to validate compatibility. The goal is to make upgrades easier, faster and less costly for manufacturers by decoupling the Android framework from vendor implementation details.
The document provides an overview of embedded Android, including its features, history, ecosystem, legal framework, hardware requirements, and development tools. It discusses key aspects of Android such as components, intents, manifest files, and more. It also summarizes the system startup process and overall architecture at a high level.
This document discusses Brillo and Weave, Google's platform for IoT based on Android. It provides a brief history of embedded Linux, Android, and headless Android. It describes Brillo's architecture based on embedded Linux, Android, Binder, and system services. It outlines Brillo's source code layout and differences from Android. It also summarizes Brillo images, user space components, services/daemons like Weave, and provides an example use case. In closing, it notes Brillo may become a new standard for embedded Linux and represents a work in progress with a clear cloud component.
Android Platform Debugging and DevelopmentOpersys inc.
This document provides an overview of debugging and development tools for the Android platform. It discusses setting up the development environment in Android Studio and exploring the AOSP source code. Various tools are described for observing system behavior like logcat, dumpsys, and profiling tools. Native debugging with gdb and gdbserver is covered as well as interfacing with framework services. The document concludes with benchmarking and performance analysis techniques.
Enhancing and modifying_the_core_android_osArnav Gupta
This document discusses modifying and enhancing the Android OS. It provides an overview of the Android framework, including applications, system UI, providers and APIs, Dalvik/Android runtime, libraries, and the kernel. It describes how to build Android for a phone by getting a build machine ready, downloading the source code, and building the OS. It outlines how to modify different parts of Android like apps, framework, hardware abstraction layer, libraries, and kernel. It also discusses open source custom Android distributions and contributing changes back to the Android Open Source Project.
Android Things is Google's latest platform for building IoT devices. It is based on Android and uses existing Android development tools. After initial attempts with Brillo and Weave, Android Things reverts back to the traditional Android architecture of system services and HALs. It extends the Android API with new capabilities for IoT and includes a peripheral manager service to interact with hardware. Images are provided for Intel Edison and Raspberry Pi 3, with sizes ranging from 11MB to 420MB. Apps can access peripherals through new APIs while a launcher tailored for IoT replaces the traditional Android launcher.
This document provides an overview of Project Ara, which aims to redefine smartphone hardware and Android architecture through modular, customizable devices. It discusses the origins and goals of Project Ara, including influences from DARPA, Phonebloks concept, and other modular devices. The document also outlines the envisioned module ecosystem, key technologies like capacitive connectors and the endoskeleton frame, the planned hardware and software architectures, and remaining challenges for Project Ara.
Native Android Userspace part of the Embedded Android Workshop at Linaro Conn...Opersys inc.
This document provides an overview of the native Android user-space environment, including:
1) The filesystem layout and key directories like /system, /data, and /vendor.
2) How the build system determines where files are placed.
3) The adb debugging tool and its capabilities.
4) Common command line tools and properties.
5) The init process and ueventd daemon.
6) Libraries like Bionic and integration options for legacy systems.
This document provides an overview of embedded Android. It discusses Android's features, history, ecosystem, legal framework, hardware requirements, and development tools. The document summarizes Android's evolution over time, different Android "flavors" for different device types, the open source nature and licenses of Android code, compatibility testing requirements, and Google's Project Treble which aims to make Android updates easier.
This document provides an overview of Android internals through a series of topics:
1. It describes key Android concepts like components, intents, and the manifest file.
2. It outlines the overall Android architecture including system startup processes like the bootloader, kernel, init, zygote and system server.
3. It covers various aspects of the Android system like the Linux kernel customizations, native user-space environment, Dalvik VM, and Java Native Interface.
4. It also profiles important system-level components like the system server, activity manager, and Binder IPC mechanism.
This document provides an overview of Android's HIDL (Hardware Interface Definition Language). It begins with introductions to HIDL's goals of providing versioned hardware interface definitions and how it fits into Android's architecture. It then covers basics like HAL's traditional C-based implementation, HIDL's similarities to AIDL, and links to documentation. The document dives deeper into HIDL's architecture including the JNI, HIDL, and HIDL glue layers. It walks through an example of lights HAL implementation. Finally, it discusses adding a new HIDL interface, the supporting infrastructure, and acknowledges diagram sources.
The document provides an overview of embedded Android, including its features, history, ecosystem, legal framework, platform requirements, and development tools. It discusses the major components of Android including activities, services, intents, and the manifest file. It also covers the startup process, from the bootloader to the init process to the system server. The document is intended as an introduction to developing embedded applications and systems using the Android platform.
Android Platform Debugging and DevelopmentOpersys inc.
This document provides an overview of debugging and development tools for the Android platform. It begins with an introduction to Android architecture basics and the development environment. It then discusses tools for observing and monitoring systems, interfacing with frameworks, and working with AOSP sources. The document also covers symbolic debugging, dynamic data collection using tools like logging, strace, and ftrace, and benchmarking Android performance.
While Android’s use in mobile and embedded systems is now common, details about how to debug and develop in its internals are still hard to come by. This session will cover the tools, techniques and hacks that developers can use to debug difficult problems within the Android stack.
View this presentation on YouTube:
https://www.youtube.com/watch?v=vnoY9WwEwIc
Android Platform Debugging and Development at ABS 2014Opersys inc.
This document provides an overview of Android platform debugging and development. It covers topics such as architecture basics, development environments, observing and monitoring systems, interfacing with frameworks, working with AOSP sources, symbolic debugging, and benchmarking. The agenda includes setting up IDEs like Eclipse for Android development, using tools to monitor processes and debug apps, integrating symbolic debuggers, and techniques for navigating the AOSP source code.
Embedded Android Workshop with MarshmallowOpersys inc.
The document provides an overview of embedded Android, including its features, history, ecosystem, legal framework, platform requirements, and development tools. It discusses Android's application framework, virtual machine, integrated browser, graphics library, SQLite database, media support, telephony, Bluetooth, WiFi, camera, GPS, and development environment. It also covers Android's history and releases from 2008 to 2016, the Open Handset Alliance members, code access policies, licenses, branding rules, Google's apps, alternative app stores, and the Oracle v. Google lawsuit.
1. The document discusses tools for Android platform development and proposes a new architecture using Node.js, Express, and JavaScript for building lightweight monitoring tools.
2. It describes initial pain points such as looking up AIDL files and monitoring processes/filesystem, and demonstrates a tool called Raidl that returns AIDL interfaces.
3. The proposed architecture uses a Node.js backend with Express and a Backbone.js frontend, allowing tools to be built for process monitoring, file browsing, and analyzing Binder relationships between services.
Embedded Android Workshop with LollipopOpersys inc.
Embedded Android workshops teach developers about customizing Android for embedded devices. Key topics covered include Android's open source ecosystem, legal framework for commercial use, hardware requirements for compliance, and development tools. The introductory session provides an overview of Android's features and history, as well as the roles of major companies in its development.
The document provides an overview of embedded Android, including:
1. It discusses the history and evolution of Android from 2002 to the present, highlighting major versions.
2. It describes the Android ecosystem, which includes over 2 billion active devices worldwide, 2.7 million apps, and Android having 88% of the global smartphone market share.
3. It covers the legal framework for Android, including code access, licenses, branding use, Google's apps, alternative app stores, and the Oracle v. Google lawsuit.
Android Platform Debugging and DevelopmentOpersys inc.
This document provides an overview and agenda for a presentation on Android platform debugging and development. It covers:
1. An introduction to Android architecture basics like hardware, AOSP, Binder and system services.
2. Setting up the development environment, including host/target systems, IDEs like Android Studio, and exploring the AOSP sources.
3. Tools for observing and monitoring at the native, framework and overall system level, including logcat, dumpsys, and third party apps.
4. Interfacing with the framework using commands like am, pm and wm, and service calls.
5. Tips for working with the AOSP source code using make targets and other build tools.
This document provides an overview of memory management in Android. It discusses the kernel's role in managing physical memory and virtual address spaces. It covers key kernel interfaces like memory-mapped registers and DMA. It also discusses low-memory conditions and tools for analyzing memory usage at the kernel, native, and app levels, including procfs, dumpsys, and DDMS. The document recommends strategies for app developers to measure and reduce memory consumption.
Embedded Android Workshop with LollipopOpersys inc.
Embedded Android workshops teach developers about building Android applications for embedded devices. The document introduces key Android concepts like components, intents, and permissions. It describes Android's architecture including the startup process from bootloader to system server. The document also covers the Linux kernel, hardware support through HAL modules, and developing native code using the Android NDK.
Treble introduces several changes to standardize and streamline the Android upgrade process for OEMs and carriers. These include defining hardware interfaces with HIDL, restricting vendor customization with VNDK, and adding a vendor interface and test suite (VINTF and VTS) to validate compatibility. The goal is to make upgrades easier, faster and less costly for manufacturers by decoupling the Android framework from vendor implementation details.
The document provides an overview of embedded Android, including its features, history, ecosystem, legal framework, hardware requirements, and development tools. It discusses key aspects of Android such as components, intents, manifest files, and more. It also summarizes the system startup process and overall architecture at a high level.
This document discusses Brillo and Weave, Google's platform for IoT based on Android. It provides a brief history of embedded Linux, Android, and headless Android. It describes Brillo's architecture based on embedded Linux, Android, Binder, and system services. It outlines Brillo's source code layout and differences from Android. It also summarizes Brillo images, user space components, services/daemons like Weave, and provides an example use case. In closing, it notes Brillo may become a new standard for embedded Linux and represents a work in progress with a clear cloud component.
Android Platform Debugging and DevelopmentOpersys inc.
This document provides an overview of debugging and development tools for the Android platform. It discusses setting up the development environment in Android Studio and exploring the AOSP source code. Various tools are described for observing system behavior like logcat, dumpsys, and profiling tools. Native debugging with gdb and gdbserver is covered as well as interfacing with framework services. The document concludes with benchmarking and performance analysis techniques.
Enhancing and modifying_the_core_android_osArnav Gupta
This document discusses modifying and enhancing the Android OS. It provides an overview of the Android framework, including applications, system UI, providers and APIs, Dalvik/Android runtime, libraries, and the kernel. It describes how to build Android for a phone by getting a build machine ready, downloading the source code, and building the OS. It outlines how to modify different parts of Android like apps, framework, hardware abstraction layer, libraries, and kernel. It also discusses open source custom Android distributions and contributing changes back to the Android Open Source Project.
Android Things is Google's latest platform for building IoT devices. It is based on Android and uses existing Android development tools. After initial attempts with Brillo and Weave, Android Things reverts back to the traditional Android architecture of system services and HALs. It extends the Android API with new capabilities for IoT and includes a peripheral manager service to interact with hardware. Images are provided for Intel Edison and Raspberry Pi 3, with sizes ranging from 11MB to 420MB. Apps can access peripherals through new APIs while a launcher tailored for IoT replaces the traditional Android launcher.
This document provides an overview of Project Ara, which aims to redefine smartphone hardware and Android architecture through modular, customizable devices. It discusses the origins and goals of Project Ara, including influences from DARPA, Phonebloks concept, and other modular devices. The document also outlines the envisioned module ecosystem, key technologies like capacitive connectors and the endoskeleton frame, the planned hardware and software architectures, and remaining challenges for Project Ara.
Native Android Userspace part of the Embedded Android Workshop at Linaro Conn...Opersys inc.
This document provides an overview of the native Android user-space environment, including:
1) The filesystem layout and key directories like /system, /data, and /vendor.
2) How the build system determines where files are placed.
3) The adb debugging tool and its capabilities.
4) Common command line tools and properties.
5) The init process and ueventd daemon.
6) Libraries like Bionic and integration options for legacy systems.
This document provides an overview of embedded Android. It discusses Android's features, history, ecosystem, legal framework, hardware requirements, and development tools. The document summarizes Android's evolution over time, different Android "flavors" for different device types, the open source nature and licenses of Android code, compatibility testing requirements, and Google's Project Treble which aims to make Android updates easier.
This document provides an overview of Android internals through a series of topics:
1. It describes key Android concepts like components, intents, and the manifest file.
2. It outlines the overall Android architecture including system startup processes like the bootloader, kernel, init, zygote and system server.
3. It covers various aspects of the Android system like the Linux kernel customizations, native user-space environment, Dalvik VM, and Java Native Interface.
4. It also profiles important system-level components like the system server, activity manager, and Binder IPC mechanism.
This document provides an overview of Android's HIDL (Hardware Interface Definition Language). It begins with introductions to HIDL's goals of providing versioned hardware interface definitions and how it fits into Android's architecture. It then covers basics like HAL's traditional C-based implementation, HIDL's similarities to AIDL, and links to documentation. The document dives deeper into HIDL's architecture including the JNI, HIDL, and HIDL glue layers. It walks through an example of lights HAL implementation. Finally, it discusses adding a new HIDL interface, the supporting infrastructure, and acknowledges diagram sources.
The document provides an overview of embedded Android, including its features, history, ecosystem, legal framework, platform requirements, and development tools. It discusses the major components of Android including activities, services, intents, and the manifest file. It also covers the startup process, from the bootloader to the init process to the system server. The document is intended as an introduction to developing embedded applications and systems using the Android platform.
Android Platform Debugging and DevelopmentOpersys inc.
This document provides an overview of debugging and development tools for the Android platform. It begins with an introduction to Android architecture basics and the development environment. It then discusses tools for observing and monitoring systems, interfacing with frameworks, and working with AOSP sources. The document also covers symbolic debugging, dynamic data collection using tools like logging, strace, and ftrace, and benchmarking Android performance.
While Android’s use in mobile and embedded systems is now common, details about how to debug and develop in its internals are still hard to come by. This session will cover the tools, techniques and hacks that developers can use to debug difficult problems within the Android stack.
View this presentation on YouTube:
https://www.youtube.com/watch?v=vnoY9WwEwIc
Android Platform Debugging and Development at ABS 2014Opersys inc.
This document provides an overview of Android platform debugging and development. It covers topics such as architecture basics, development environments, observing and monitoring systems, interfacing with frameworks, working with AOSP sources, symbolic debugging, and benchmarking. The agenda includes setting up IDEs like Eclipse for Android development, using tools to monitor processes and debug apps, integrating symbolic debuggers, and techniques for navigating the AOSP source code.
Android Platform Debugging and Development at ELCE 2013Opersys inc.
This document provides an overview of debugging and development tools and techniques for the Android platform. It discusses the architecture basics, development environment setup in Eclipse, tools for observing and monitoring including logcat, dumpsys and ftrace. It also covers interfacing with the framework, symbolic debugging with DDMS and gdb, and detailed dynamic data collection using logging and profiling tools like perf.
Working with the AOSP - Linaro Connect Asia 2013Opersys inc.
This document provides instructions for customizing and building the Android Open Source Project (AOSP). It discusses tools for working with AOSP, building AOSP, output images, compatibility testing, and basic customizations like adding a new device. The document is intended to guide developers through setting up their environment, building AOSP, and making simple changes to AOSP components and devices.
This document discusses customizing Android's user interface. It covers modifying the launcher app, system UI, creating kiosk apps, adding screen overlays, theming, customizing the boot animation, and other UI elements like wallpaper, notifications, and widgets. The architecture of the Android display stack is also summarized, including SurfaceFlinger, the window manager, and the HAL interface.
The document provides an overview of Android's user interface (UI) architecture. It discusses the hardware components like the system on a chip (SoC) and graphics processing unit (GPU) that power Android's UI. It then summarizes the various software layers involved, including the kernel drivers, Android Open Source Project (AOSP) framework, Binder inter-process communication, hardware abstraction layer (HAL), SurfaceFlinger compositor, and key apps like the launcher, status bar, and notifications. It also gives a high-level overview of the startup process and references for further reading on Android graphics.
This document provides a summary of Android's user interface architecture. It discusses the hardware components like the display, touch input, and keyboard. It then covers the main software layers including the kernel driver, HAL definition, HAL modules, SurfaceFlinger, Window Manager, and how they interact. It also summarizes OpenGL, the input layer, relevant apps and services, and the system startup process. The document recommends several references for learning more about Android's graphics and input subsystems.
Running Code in the Android Stack at ELCE 2013Opersys inc.
This document provides an overview of running code in the Android software stack. It discusses the various programming languages and mechanisms used, including Java, C/C++, and scripting languages. It also covers starting applications, system services, libraries, and more. The overall goal is to explain how to develop and integrate code at all levels of the Android operating system.
This document provides a summary of Android's user interface architecture. It discusses the display core including the display hardware, kernel driver, HAL definition, HAL module, SurfaceFlinger, and Window Manager. It also covers OpenGL, the input layer, relevant apps and services like the launcher and status bar, and system startup. References are provided for further reading on Android graphics internals.
Headless Android allows running the full Android system software stack without a graphical user interface. It is achieved by disabling SurfaceFlinger and the WindowManager system services. This removes the display and window management functionality while retaining all other Android frameworks and APIs. The result is a headless version of Android that can be used for building embedded and specialized devices without screen output.
Running Code in the Android Stack at ABS 2014Opersys inc.
This document provides an overview of running code in the Android stack, covering various topics:
1) It discusses the different programming languages and components used to build Android applications and the platform itself, including Java, C/C++, and various Android app components.
2) It outlines standard app mechanisms like intents, components, processes and threads that apps use to integrate with the Android system.
3) It briefly covers some special app mechanisms like services, content providers and widgets.
This document discusses customizing Android's user interface. It covers modifying the launcher app, creating kiosk apps, customizing system UI elements like the status bar, adding screen overlays, theming apps, modifying the boot animation, and other user interface components like wallpaper, notifications, and widgets.
The input layer in Android uses the standard Linux input layer in the kernel to handle raw input from devices like touchscreens and keyboards, it then processes this input through a native library and the Input Manager Service which is started and tied to the Window Manager to dispatch input events to apps. Specific device configuration files and the soft keyboard and input method frameworks handle app-specific input handling and text entry.
This document provides an overview of customizing Android's user interface, including:
1. The Android architecture and display stack involving Surface Flinger, HAL modules, and the window manager.
2. Customizing the launcher app, system UI elements, creating kiosk apps, and using screen overlays.
3. Theming resources and modifying the boot animation.
4. Additional UI elements like the wallpaper manager, notifications, and app widgets.
This document summarizes the history and evolution of Android for embedded and IoT devices, including:
1) Early embedded Linux systems had no consistent development environment or APIs. Android provided a standardized environment but was initially not designed for embedded.
2) Headless Android and later Brillo were Google's first attempts at an Android variant for IoT. Brillo sources were available but never officially released.
3) Android Things is Google's current strategy, building on the original Android architecture but extending the APIs for IoT and supporting constrained hardware. It allows using existing Android development tools for IoT apps and devices.
Embedded Android Workshop part I ESC SV 2012Opersys inc.
This document provides an overview and agenda for an embedded Android workshop. It includes a list of required materials and software that will be used. The workshop will cover setting up an Android development environment on a BeagleBone Black embedded board using software downloaded to a USB drive.
1) Android's UI consists of layers including the display hardware, kernel driver, HAL modules, SurfaceFlinger, Window Manager and key apps.
2) The display stack includes the kernel driver, HAL definition and module, SurfaceFlinger for compositing surfaces, and Window Manager for managing app windows.
3) OpenGL involves kernel drivers, EGL libraries, and native/Java interfaces to provide 3D graphics capabilities to apps through the GPU hardware.
This document discusses security issues with custom Android ROMs. It begins by introducing custom ROMs and why they warrant security reviews. It then analyzes several practices in custom ROMs that could compromise security, such as enabling USB debugging, running ADB in root mode, loose permissions on the system partition, and allowing installation from unknown sources. The document demonstrates a proof-of-concept data theft tool and recommends users be wary of development processes and ask questions when using custom ROMs. It concludes with contact information for the author.
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Neo4j - Product Vision and Knowledge Graphs - GraphSummit ParisNeo4j
Dr. Jesús Barrasa, Head of Solutions Architecture for EMEA, Neo4j
Découvrez les dernières innovations de Neo4j, et notamment les dernières intégrations cloud et les améliorations produits qui font de Neo4j un choix essentiel pour les développeurs qui créent des applications avec des données interconnectées et de l’IA générative.
Zoom is a comprehensive platform designed to connect individuals and teams efficiently. With its user-friendly interface and powerful features, Zoom has become a go-to solution for virtual communication and collaboration. It offers a range of tools, including virtual meetings, team chat, VoIP phone systems, online whiteboards, and AI companions, to streamline workflows and enhance productivity.
E-commerce Application Development Company.pdfHornet Dynamics
Your business can reach new heights with our assistance as we design solutions that are specifically appropriate for your goals and vision. Our eCommerce application solutions can digitally coordinate all retail operations processes to meet the demands of the marketplace while maintaining business continuity.
Utilocate offers a comprehensive solution for locate ticket management by automating and streamlining the entire process. By integrating with Geospatial Information Systems (GIS), it provides accurate mapping and visualization of utility locations, enhancing decision-making and reducing the risk of errors. The system's advanced data analytics tools help identify trends, predict potential issues, and optimize resource allocation, making the locate ticket management process smarter and more efficient. Additionally, automated ticket management ensures consistency and reduces human error, while real-time notifications keep all relevant personnel informed and ready to respond promptly.
The system's ability to streamline workflows and automate ticket routing significantly reduces the time taken to process each ticket, making the process faster and more efficient. Mobile access allows field technicians to update ticket information on the go, ensuring that the latest information is always available and accelerating the locate process. Overall, Utilocate not only enhances the efficiency and accuracy of locate ticket management but also improves safety by minimizing the risk of utility damage through precise and timely locates.
Need for Speed: Removing speed bumps from your Symfony projects ⚡️Łukasz Chruściel
No one wants their application to drag like a car stuck in the slow lane! Yet it’s all too common to encounter bumpy, pothole-filled solutions that slow the speed of any application. Symfony apps are not an exception.
In this talk, I will take you for a spin around the performance racetrack. We’ll explore common pitfalls - those hidden potholes on your application that can cause unexpected slowdowns. Learn how to spot these performance bumps early, and more importantly, how to navigate around them to keep your application running at top speed.
We will focus in particular on tuning your engine at the application level, making the right adjustments to ensure that your system responds like a well-oiled, high-performance race car.
A Study of Variable-Role-based Feature Enrichment in Neural Models of CodeAftab Hussain
Understanding variable roles in code has been found to be helpful by students
in learning programming -- could variable roles help deep neural models in
performing coding tasks? We do an exploratory study.
- These are slides of the talk given at InteNSE'23: The 1st International Workshop on Interpretability and Robustness in Neural Software Engineering, co-located with the 45th International Conference on Software Engineering, ICSE 2023, Melbourne Australia
What is Augmented Reality Image Trackingpavan998932
Augmented Reality (AR) Image Tracking is a technology that enables AR applications to recognize and track images in the real world, overlaying digital content onto them. This enhances the user's interaction with their environment by providing additional information and interactive elements directly tied to physical images.
Do you want Software for your Business? Visit Deuglo
Deuglo has top Software Developers in India. They are experts in software development and help design and create custom Software solutions.
Deuglo follows seven steps methods for delivering their services to their customers. They called it the Software development life cycle process (SDLC).
Requirement — Collecting the Requirements is the first Phase in the SSLC process.
Feasibility Study — after completing the requirement process they move to the design phase.
Design — in this phase, they start designing the software.
Coding — when designing is completed, the developers start coding for the software.
Testing — in this phase when the coding of the software is done the testing team will start testing.
Installation — after completion of testing, the application opens to the live server and launches!
Maintenance — after completing the software development, customers start using the software.
Enterprise Resource Planning System includes various modules that reduce any business's workload. Additionally, it organizes the workflows, which drives towards enhancing productivity. Here are a detailed explanation of the ERP modules. Going through the points will help you understand how the software is changing the work dynamics.
To know more details here: https://blogs.nyggs.com/nyggs/enterprise-resource-planning-erp-system-modules/
Launch Your Streaming Platforms in MinutesRoshan Dwivedi
The claim of launching a streaming platform in minutes might be a bit of an exaggeration, but there are services that can significantly streamline the process. Here's a breakdown:
Pros of Speedy Streaming Platform Launch Services:
No coding required: These services often use drag-and-drop interfaces or pre-built templates, eliminating the need for programming knowledge.
Faster setup: Compared to building from scratch, these platforms can get you up and running much quicker.
All-in-one solutions: Many services offer features like content management systems (CMS), video players, and monetization tools, reducing the need for multiple integrations.
Things to Consider:
Limited customization: These platforms may offer less flexibility in design and functionality compared to custom-built solutions.
Scalability: As your audience grows, you might need to upgrade to a more robust platform or encounter limitations with the "quick launch" option.
Features: Carefully evaluate which features are included and if they meet your specific needs (e.g., live streaming, subscription options).
Examples of Services for Launching Streaming Platforms:
Muvi [muvi com]
Uscreen [usencreen tv]
Alternatives to Consider:
Existing Streaming platforms: Platforms like YouTube or Twitch might be suitable for basic streaming needs, though monetization options might be limited.
Custom Development: While more time-consuming, custom development offers the most control and flexibility for your platform.
Overall, launching a streaming platform in minutes might not be entirely realistic, but these services can significantly speed up the process compared to building from scratch. Carefully consider your needs and budget when choosing the best option for you.
Mobile app Development Services | Drona InfotechDrona Infotech
Drona Infotech is one of the Best Mobile App Development Company In Noida Maintenance and ongoing support. mobile app development Services can help you maintain and support your app after it has been launched. This includes fixing bugs, adding new features, and keeping your app up-to-date with the latest
Visit Us For :
Preparing Non - Technical Founders for Engaging a Tech AgencyISH Technologies
Preparing non-technical founders before engaging a tech agency is crucial for the success of their projects. It starts with clearly defining their vision and goals, conducting thorough market research, and gaining a basic understanding of relevant technologies. Setting realistic expectations and preparing a detailed project brief are essential steps. Founders should select a tech agency with a proven track record and establish clear communication channels. Additionally, addressing legal and contractual considerations and planning for post-launch support are vital to ensure a smooth and successful collaboration. This preparation empowers non-technical founders to effectively communicate their needs and work seamlessly with their chosen tech agency.Visit our site to get more details about this. Contact us today www.ishtechnologies.com.au
OpenMetadata Community Meeting - 5th June 2024OpenMetadata
The OpenMetadata Community Meeting was held on June 5th, 2024. In this meeting, we discussed about the data quality capabilities that are integrated with the Incident Manager, providing a complete solution to handle your data observability needs. Watch the end-to-end demo of the data quality features.
* How to run your own data quality framework
* What is the performance impact of running data quality frameworks
* How to run the test cases in your own ETL pipelines
* How the Incident Manager is integrated
* Get notified with alerts when test cases fail
Watch the meeting recording here - https://www.youtube.com/watch?v=UbNOje0kf6E
2. 2
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3. 3
About
●
Author of:
●
Introduced Linux Trace Toolkit in 1999
●
Originated Adeos and relayfs (kernel/relay.c)
●
Ara Android Arch Oversight
●
Training, Custom Dev, Consulting, ...
4. 4
Agenda
1. Architecture Basics
2. Development environment
3. Observing and monitoring
4. Interfacing with the framework
5. Working with the AOSP sources
6. Symbolic debugging
7. Detailed dynamic data collection
8. Benchmarking
9. Summing up
17. 17
2.3.1. Preparation
● AOSP Basics:
● Get AOSP ... from Google or otherwise
● Extract if needed
● Configure, build, etc.
● Android Studio:
● Get Android Studio from developer.android.com
● Extract
● Start and update and if needed
18. 18
● Creating AOSP project files for Studio:
[aosp]$ make idegen && development/tools/idegen/idegen.sh
● Sometimes you also need to fix an issue with
"res.java":
[aosp]$ cd out/target/product/generic/obj/GYP/shared_intermediates
[aosp]$ mv res.java res.j && croot
19. 19
2.3.2. Project importing
● Start Android Studio:
● Choose "Open an Existing Android Studio Project"
● Select android.ipr from AOSP
● Let it finish indexing
● To force framework detection -- if no auto-detect:
● Close Studio
● Restart Studio
● Click on "Framework Detected" bubble
20. 20
2.3.3. Browsing the sources
● Right-click object type to be taken to declaration
● Browse classes through “Structure”
● Right-click "Find Usages"
● Toggle open files (Alt-left, Alt-right)
● Many other shortcuts, see:
https://developer.android.com/sdk/installing/studio-tips.htm
● Issues:
● Can't compile with Studio ... still need “make”
● For Java only
28. 28
4. Interfacing With the Framework
● start / stop
● service call
● am
● pm
● wm
● svc
● monkey
● setprop
● raidl
29. 29
5. Working with the AOSP Sources
● You really need to check build/envsetup.sh
● Some tricks:
● godir
● croot
● mm
● m
● jgrep
● cgrep
● resgrep
● It takes time to wrap your head around the tree
31. 31
6.1. Studio / Monitor integration
● Beware of libgail18 in Ubuntu
● Start Studio
● Start Monitor
● ("Android" icon on toolbar)
● Each process has a separate host-side socket
● Select the process you want to debug:
● It'll get port 8700
32. 32
● Go back to Studio:
● Run->Edit Configurations->"+"
● Remote->Port: 8700
● Apply & Debug
● Go back to Monitor:
● Check that the little green bug is beside your process
in ddms
● You're now ready to debug
34. 34
6.2. Debugging multiple processes
● Select process in Monitor
● Go back to Studio and start a new debugging
session
● Each process will now have a green bug beside
it
35. 35
6.4. gdbserver - target side
● AOSP already takes care of debug:
● “-g” flag added to all native binaries
● Unstripped binaries in out/target/product/.../symbols/...
● Attaching to running process
# gdbserver attach locahost:2345 30
● Start app for debugging with gdbserver prepended
# gdbserver localhost:2345 service list
● Forward the port on the host:
$ adb forward tcp:2345 tcp:2345
36. 36
6.5. gdb - host side
● Load file **FIRST** and then attach on host side
$ prebuilts/gcc/linuxx86/arm/armeabi4.7/bin/armeabigdb
GNU gdb (GDB) 7.3.1gg2
Copyright (C) 2011 Free Software Foundation, Inc.
...
(gdb) file out/target/product/generic/symbols/system/bin/service
(gdb) target remote localhost:2345
(gdb) b main
Cannot access memory at address 0x0
Breakpoint 1 at 0x2a00146c: file frameworks/native/cmds/service/service.cpp, line 59.
(gdb) cont
Continuing.
warning: Could not load shared library symbols for 11 libraries, e.g. /system/bin/linker.
...
Breakpoint 1, main (argc=2, argv=0xbe882b74) at frameworks/native/cmds/service/service.cpp:59
59 {
(gdb) n
60 sp<IServiceManager> sm = defaultServiceManager();
(gdb) n
59 {
(gdb) n
60 sp<IServiceManager> sm = defaultServiceManager();
(gdb) n
61 fflush(stdout);
38. 38
6.7. JTAG
● Requires hardware device
● Sometimes interfaces with gdb
● Not Android specific
● Some allow transparent kernel/user-space debug
● Don't know of any that go all the way up to Dalvik
42. 42
7.3. ftrace
● With 4.1, Google introduced systrace/atrace
● systrace is a Python script running on host side
● atrace is native Android binary
● systrace calls atrace via ADB
● atrace uses ftrace to capture kernel events
● Stack instrumented to feed events to ftrace
● Google's doc:
● https://developer.android.com/tools/help/systrace.html
● https://developer.android.com/tools/debugging/systrace.html
44. 44
... trouble is ...
● Finicky -- notes from my attempts with 4.3:
● I can't get it to work !*!@#$&!#*$!
● Default goldfish kernel doesn't have ftrace
● Able to build ftrace-enabled kernel for goldfish
● Can trace that system ... so long as I don't use
atrace/systrace ... WTF1
?
● Not all Android kernels have ftrace enabled
● Generates HTML file that can only be read by
Chrome ... it doesn't work in Firefox. NIH?
1: The AOSP sources define WTF as “What a Terrible Failure”. We
trust they've done their research.
45. 45
... still ...
● Have a look at these files:
● /external/chromium-trace/systrace.py
● /frameworks/native/cmds/atrace
● /frameworks/base/core/java/android/os/Trace.java
● /erameworks/native/include/utils/Trace.h
● /system/core/include/cutils/trace.h
● /frameworks/native/libs/utils/Trace.cpp
● Look for:
● ATRACE* in c/cpp files
● Trace.traceBegin()/trace.traceEnd() in Java files