Android™ Application Development

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Android Application Development

• www.otssolutions.com

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What is Android ?

• Google purchased Android Inc., a 22-month-old
  Palo Alto, California, startup in July 2005.
• Android is a software stack for mobile devices
  that includes an operating system, middleware and
  key applications.

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Android

• One of the most widely used mobile OS these days
  is ANDROID. Android is a software bunch
  comprising not only operating system but also
  middleware and key applications.
• Android applications are written in java
  programming language and It is available as open
  source for developers to develop applications
  which can be further used for selling in android
  market.

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Android OS Market
In Q2 2009 Android had 2.8 market share which
had grown to 33 market share by Q4 2010 and in
May its grow to 50, which made Android leader
of smart phone OSs worldwide.
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How Android Is Different

• Open for modification.
• This gives vendors the opportunity to change and
  enhance their products based on their own
  preferences. This has created many versions of
  Android phones, which can vary by vendor, as
  well as a range of other devices that use this
  platform.

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Android System Architecture
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Different version of Android
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Basics applications of Android

• Android applications are composed of one or more
  application components (activities, services,
  content providers, and broadcast receivers).
• Each component performs a different role in the
  overall application behavior, and each one can be
  activated individually (even by other
  applications)

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Basics applications of Android

• The manifest file must declare all components in
  the application and should also declare all
  application requirements, such as the minimum
  version of Android required and any hardware
  configurations required
• Non-code application resources (images, strings,
  layout files, etc.) should include alternatives
  for different device configurations (such as
  different strings for different languages)

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Android Features

• Application Framework that enables reuse and
  replacement of components.
• Optimized Graphics that is powered by customized
  2D graphics library and 3D graphics based on the
  OpenGL ES 1.0 specification
• Provision of Bluetooth, EDGE, 3G and Wi-Fi .
• SQLite for structured data storage Open source
• Web Kit engine based integrated web browser .

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Android Features

• Camera, GPS, Compass, and Accelerometer
  (dependent on hardware support) GSM Telephony
  Dalvik virtual machine optimized for mobile
  devices.
• GSM Telephony
• Dalvik virtual machine optimized for mobile
  devices .

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Android's Latest

• Browser It also supports popular web standards
  like CSS 3D, Animations . It also supports
  playback of HTML5 video content.
• Gallery Now the gallery supports PTP (Picture
  Transfer Protocol) so that users can directly
  connect their cameras with Android device and
  transfer pictures with a single touch.

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Android's Latest

• Email When replying or forwarding an HTML
  message, The Email app now sends both plain text
  and HTML bodies as a multi-part mime message.
  This ensures that the message will be formatted
  properly for all recipients.
• Enterprise support Users can now configure an
  HTTP proxy for each connected Wi-Fi access point.
  This lets administrators work with users to set a
  proxy hostname, port, and any bypass sub domains.

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What is Android Tablet ?

• Tablets are taking the computing world by storm.
  They are the latest trend that gives you internet
  capabilities, access to email, video chat and
  allows you to capture images and video while on
  the go.
• These multimedia devices are designed to be
  portable, with small dimensions and a lightweight
  design. They also give you control by navigating
  around the device using the touchscreen display
  or stylus pen.

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Android Tablet

• Ice Cream Sandwich is the new update from Google
  to Android mobile operating system and tablets.
  It has many new features, which make it more of a
  complete revamp than upgrade.
• Android Tablet is very famous in modern world and
  people of all profession are using Tablets for
  different usages.

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Android Tablet

• Android Tablet is very famous in modern world and
  people of all profession are using Tablets for
  different usages.
• There is no mess of maintaining a keyboard etc,
  but it is fully integrated with touch screen
  functionality and it has LCD screen.
• It is helpful for everyone and its usage totally
  depend on person-to-person and their requirements.

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Android Cloud to Device Messaging Framework
(C2DM)

• Android Cloud to Device Messaging (C2DM) is a
  service that helps developers send data from
  servers to their applications on Android devices.
• The service provides a simple, lightweight
  mechanism that servers can use to tell mobile
  applications to contact the server directly, to
  fetch updated application or user data.

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Cloud to Device Messaging (C2DM)
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Characteristics of Android Cloud to Device
Messaging (C2DM)

• It allows third-party application servers to send
  lightweight messages to their Android
  applications.
• An application on an Android device doesnt need
  to be running to receive messages.

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Characteristics of Android Cloud to Device
Messaging (C2DM)

• It does not provide any built-in user interface
  or other handling for message data. C2DM simply
  passes raw message data received straight to the
  application.
• It uses an existing connection for Google
  services. This requires users to set up their
  Google account on their mobile devices.

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Architecture of Android Cloud to Device
Messaging (C2DM)
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Enabling C2DM

• The first time the application needs to use the
  messaging service, it fires off a registration
  Intent to a C2DM server.
• If the registration is successful, the C2DM
  server broadcasts a REGISTRATION Intent which
  gives the application a registration ID. The
  application should store this ID for later use.

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Enabling C2DM

• To complete the registration, the application
  sends the registration ID to the application
  server. The application server typically stores
  the registration ID in a database.

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Enabling C2DMThe application must include
the id package name is the unique identifier of
our application on Android.
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Enabling C2DMGoogle's servers will
generate a token, the registration id and return
it to the application.
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Enabling C2DM.This token will allow us to
send a message from the content. Once received,
it must be sent to our application server to be
stored.
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Sending a Message

• The application has a registration ID that allows
  it to receive messages for a particular device.
• The third-party application server has stored the
  registration ID.
• The application server sends a message to C2DM
  servers.

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Sending a Message

• Google enqueue and stores the message in case the
  device is inactive.
• When the device is online, Google sends the
  message to the device.

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Receiving a Message
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Receiving a Message

• The system receives the incoming message and
  extracts the raw key/value pairs from the message
  payload.
• The system passes the key/value pairs to the
  targeted Android application in a
  com.google.android.c2dm.intent.RECEIVE Intent as
  a set of extras.
• The Android application extracts the raw data
  from the RECEIVE Intent by key.

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• Thank You

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• India
• Gurgaon ( Haryana )
• 795, Udyog Vihar, Phase-V
• Gurgaon(Haryana) India
• Ph 91 124 4101350
• 91 124 4748100
• Write to us at sales_at_otssolutions.com

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