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G5 Android for Industrial System Control

Building friendly interfaces for industrial systems with Android

  • Discover the Android system architecture.
  • Learn to configure and compile the Android sources to get a working system.
  • Understand the Android SDK and NDK
    • Learn how to build a simple application
    • Learn the basics of man-machine Interface with Android
    • Discover how to interface Java code and native code
  • Explore the Android source code architecture
    • The Android init process
    • System services
    • The Android Hardware Abstraction Layer
All labs will be conducted on an industrial, tablet form-factor, Sabre SDB board from NXP, based on a Quad-core Cortex/A9 i.MX6 chip communicating with an external microcontroller board emulating the industrial system to control.
Who should attend this course?
  • Engineers that must develop Android applications to control industrial systems.
  • Architects that want to understand the benefit they may obtain from using Android in their products.
What you will be able to do after the training
  • Install Android on an embedded platform
  • Interface an Android platform with an external system
  • Create a typical Android Embedded application.
  • Basic Linux user experience
  • Basic C (or C++) programming skills
  • Due to the high degree of advanced Java techniques being used, good Java development skills are mandatory
Course environment
  • Printed course material (in English).
  • One Linux PC for two trainees.
  • One target Android platform (dual Cortex/A9) for two trainees
  • External sensor hardware on an Arduino board connected in USB with the Android platform

First Day
Android Architecture Overview
  • Linux and Android
  • Android licensing
The Android Build System
  • The Android code base
  • Building Android
    • The Android build environment
    • The Android build system
    • The Android.mk files
  • Adding new components to the build system
    • Java components
    • Native components
    • Applications
Exercise :  Compiling the Android platform
Android Application Structure
  • Structure of an Android Application
  • Android application components
    • Activity
    • Service
    • Broadcast receiver
    • Content provider
  • Manifest file
    • Application components declaration
    • Permissions
Exercise :  Hello world application
  • User interface configuration
    • Depending on the language
    • Depending on screen characteristics (dimensions, orientation…)
Exercise :  Multilingual Hello world (Deutsch-English-Français)
The Android System Initialization
  • Android properties
  • The Android initialization
    • Structure of the init process
    • The Android initialization language
  • The Dalvik Java virtual machine
    • The Dalvik machine structure
    • The Dalvik bytecodes
    • The Dalvik “zygote” process
Exercise :  Tailoring Android initialization to start additional system daemons
Second Day
Activities and user interface
  • Activities life cycle
  • Activity callbacks
    • onCreate
    • onStart…
  • Intents and Intents filter
    • The Intent class Intent
    • Declaring Intent filters in manifest files
  • Activity invocation with and without results
    • startActivity
    • startActivityForResult
  • Tasks (activities stack) and navigation between activities
Exercise :  Writing a simplified parameter entry application
Defining user interface layout
  • Layouts
    • Layout kinds
    • Components properties related to layouts
  • Resources
    • Strings
    • images
    • layouts…
  • Views
    • Buttons, labels and edition fields
    • View instantiation from a resource
  • Specialized views
    • ListView
    • Data binding (Adapter class and subclasses)
  • User Input
    • Touch screen and keyboard
    • Software keyboard management
  • Dialogs and User notifications
    • Dialog box
    • Status Bar
    • Toast
Exercise :  Writing a simple Command and Control application
The Android Sensors
  • Sensors in Android
    • The sensor types
    • The Sensor Manager
    • Accessing Sensors
  • Framework Architecture
    • Sensor discovery
    • Sensor Calibration
Exercise :  Getting and displaying a sensor value (temperature...)
Third day
Android as a Distributed System
  • The Android Binder architecture
  • Binder implementation
    • The AIDL language
    • The AIDL tool
    • Binder Java classes
  • Writing Application Services
  • System services
    • What is a system service
    • Static and context-dependent services
    • Structure of a system service
    • Adding a new system service
    • The system ServiceManager process
Exercise :  Coding a service to control an external device
Android Native Interface
  • The Android NDK
    • Defining Java methods in C++
    • JNI for Android
  • Integrating native code in a package
    • Using the NDK from Eclipse
    • Debugging native code
Exercise :  Displaying data fetched from an external device
Advanced User Interface
  • User interface and multithreading
    • Accessing views from another thread
Exercise :  Multi-threaded user interface with buttons and progress bars
  • Custom control creation
    • By deriving directly the View class
    • By deriving an existing view
  • 2D Drawing
    • Canvas and Shapes
    • Drawing from the main thread
    • Drawing from another thread
Exercise :  Displaying a graph of sensor values
Data management
  • Storage
    • Shared preferences
    • Internal storage
    • External storage
    • SQLite
  • Content provider
    • Communication with a content provider
    • Implementing a content provider
Exercise :  Logging data fetched from the external device and displaying historical data
Fourth Day
Broadcast Receivers
  • Installing a Broadcast Receiver
    • Static creation of broadcast receivers
    • Dynamic instantiation and registration
  • Broadcasting intents
    • Normal broadcast
    • Ordered broadcast
  • Using PendingIntent in broadcast receivers
  • System broadcasted events
Exercise :  Handling process alarms in a custom broadcast receiver
  • Connections management
  • Sockets
  • HTTP requests
  • WebView control
  • Web Services
Exercise :  Socket communications with a distant management application
The Hardware Abstraction Layer
  • Why a HAL?
  • HAL Component Structure
    • Defining HAL components
    • Loading and using HAL component
  • The standard HAL components
    • Graphics
    • Audio
    • Camera
    • Bluetooth
    • GPS
    • Sensors
Exercise :  Create a simple HAL component