http://developer.android.com/reference/packages.html
The Android Application components another important resource:
http://developer.android.com/guide/components/index.html
The Android Welcome page
http://developer.android.com/about/index.html
The Android Open Source Project
http://source.android.com/
Linux Kernel: Standard services - Provides infrastructure mechanisms to manage mobile device resources
• Security
• Memory, process, & thread management
• Network & File I/O
• Device driver framework (pluggable devices)
Android specific includes power management, Android Shared memory, low memory killer, Binder (Inter Process communication) , alarm driver, debugger, logger
http://en.wikipedia.org/wiki/Android_(operating_system)#Linux_kernel
Native System Libraries (C/C++ Native DK) core performance sensitive activities on device
System C library - (std os system calls such as process/thread creation, memory allocation, mathemetical) bionic libc
• Surface Manager - (updating the display) display management
• Media Framework - (playback) audio/video streaming
• FreeType - library for rendering fonts
• Webkit - (rendering and display web pages ) web browser engine
• OpenGL ES, SGL - graphics engines
• SQLite - relational database engine
• SSL - secure sockets layer
http://developer.android.com/tools/sdk/ndk/index.html
Runtime (part of System libraries layer)
Davlik virtual machine executes the android apps, code written in java compiled into series of bytecode files , Davlik dx program transforms java classes into single Dex bytecode file (classes.dex). File packaged with other resources and installed on device. Dalvik VM executes the Dex Bytecode file when invoked on device.
Dalvik VM designed to be resource constrained environment with slower cpu, less memory, limited battery life
http://en.wikipedia.org/wiki/Dalvik_(software)
Core Libraries
• Core Java classes (building blocks)
• android.* (application lifecycle)
• java.*, javax.* (data structures, concurrency, I/O)
• junit.* (unit testing)
• org.* (internet/ web services)
org.json.*, org.xml.*
http://en.wikipedia.org/wiki/Comparison_of_Java_and_Android_API
Application Framework - reusable software that many applications will need
Package Manager - Manages application packages on device such as info about apps
Window Manager - Manages top-level window’s look & behavior (notification bar, main application window, sub-menus/dialogs)
View System - common user interface elements such as Tabs, Lists, grids, text boxes, buttons, textview
Resource Manager - Manages non-compiled code resources: strings, graphics, & layout filesContent Providers - Inter-application data sharing (i.e. databases)
Activity Manager - Application lifecycle & common navigation stack
Telephony Manager - State of telephony services
Location Manager - Access to system location services
Notification Manager - Notify users when events occur
https://sites.google.com/site/io/inside-the-android-application-framework
Application - built in apps. Can substitute apps.
Home, Contacts, Phone, Browser, Email
Activity : Represents a single screen with a user interface (view user interface) - see Activity class
- activity lifecycle or http://developer.android.com/reference/android/app/Activity.html
- Can be started by creating an Intent object & passing it to startActivity()
- Parameters can be passed as “extras” to the Intent used to start the Service
- Apps can have multiple Activities
Service -operation in background, can bind to other services or Activities. For performing long-running operations or to access remote resources. Extends the Service class.
Started Service – Often performs a single operation & usually doesn’t return a result to the caller directly
Bound Service – Offers a client-server interface that allows components to interact with the Service
http://developer.android.com/guide/components/services.html
Content Provider - Manages a shared set of application data , Never accessed directly,
but via a Content Resolver
Consistent access to data (i.e. Rest, Crud operations)
Data store backing options like SQLite, Web, File systems
Can consume data from other content providers
Extends the ContentProvider class
http://developer.android.com/guide/topics/providers/content-providers.html
- Supports complex Intent filtering
- delivered asynchronously to all receivers
Extends BroadcastReceiver class
http://developer.android.com/reference/android/content/BroadcastReceiver.html
Intents - messages (i.e. events) that link application components together
http://developer.android.com/guide/components/intents-filters.html
https://sites.google.com/site/io/anatomy--physiology-of-an-android
ADT Bundle:
latest android platform
eclipse and ADT plugin
latest image for emulator
additional dev tools
http://developer.android.com/sdk/index.html
Emulator:
network/speed latencies
battery power
location coordinates
telnet localhost port# (i.e. 5554)
slow network:
network speed edge
network speed full
power capacity 5
power status not-charging
geo fix 0.0 40.0
sms send 3015555555 "msg"
call port number other emulator
http://developer.android.com/tools/devices/emulator.html
Davlik debug Monitor service (DDMS) perspective
- file explorer
- logcat
- button in ddms to start and stop profiling at debug tracept
Open perspective -> Hierarchy view
http://developer.android.com/guide/index.html
http://developer.android.com/training/index.html
http://www.androiddevtools.com/
http://www.dre.vanderbilt.edu/~schmidt/cs282/
http://www.cs.swarthmore.edu/~aviv/classes/s13/cs71/
http://www.cs.odu.edu/~cs495/
http://www.vogella.com/tutorials/android.html
http://www.cs.unibo.it/projects/android/2013/index.html#links
http://liisp.uncc.edu/mbapps/
http://www.stanford.edu/class/cs193a/
http://cs76.tv/2012/spring/
https://www.youtube.com/watch?v=RNaOWBBvAGo
