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A PresentationOn

Android

Submitted to:-

Dr. K.K. Agarwal

Ms. Kusum Yadav

Mr. Hitesh Maharwal

Submitted by:-

Sunil Kumar

IV yr, B.Tech (IT)

10EJCIT089

Content• What is Android?• Android Versions• Android Architecture• Application building blocks• Development tools• Hello Android Example• Application Lifecycle• Android Layouts• References

What Is Android?• Android is an Open software platform for

mobile development.• Android is an Linux-based operating system.• Fast application development in Java• A complete stack – OS, Middleware,

Applications• Its initially developed by Android,Inc., which

Google backed financially.

Android versions?

There are 17 API till now.

The Android 1st version is 1.0 and this family is

known as Alpha.

The latest version of Android is 4.4

which is known as Kit-Kat.

Upcoming AndroidVersion

Android LASSI /LADDO

It is based on Indian dishes

Android Architecture

Linux Kernel

Device drivers

Memory management

Process management

Networking

Libraries

• C/C++ libraries• Interface through Java• Surface manager – Handling UI Windows• 2D and 3D graphics• Media codecs, SQLite, Browser engine

Android Runtime

• Dalvik VM– Dex files– Compact and efficient than class files– Limited memory and battery power

• Core Libraries– Java 5 Std edition– Collections, I/O etc…

Application Building Blocks

• Activity• IntentReceiver• Service• ContentProvider

Activities

• Represents the presentation layer of an Android application, e.g. a screen which the user sees. An Android application can have several activities and it can be switched between them during runtime of the application. But, they can:– Be faceless– Be in a floating window– Return a value

Intents

• Think of Intents as a verb and object; a description of what you want done– E.g. VIEW, CALL, PLAY etc..

• System matches Intent with Activity that can best provide the service

• Activities and Intent Receivers describe what Intents they can service

Intents

GMail

Contacts

Home

Blogger

Chat

Client component makes a request for a specific action

“Pick photo”

PicasaSystem picks best component for that action

New components can use existing functionality

Blogger

Photo Gallery

Services

• Faceless components that run in the background– E.g. music player, network download etc…

ContentProviders

• Enables sharing of data across applications– E.g. address book, photo gallery

• Provides uniform APIs for:– querying– delete, update and insert.

• Content is represented by URI and MIME type

Development Tools

• Eclipse

• JDK

• Android SDK 1.0-2.0

• 1GB RAM,20GB HARD DISK,I/O devices etc

The Emulator

• QEMU-based ARM emulator• Runs the same image as the

device

• Limitations:– No Camera support

Devices

Android Example

• It’s a Android Example for Hello world Application

• Generating UIs– Views – building blocks– E.g. TextView, EditText, Button– Placed into Layouts

Views

Application Lifecycle

• Application run in their own processes (VM)• Processes are started and stopped as needed

to run an application's components• Processes may be killed to reclaim resources

Android Layouts

Linear Layout

Relative Layout

Frame Layout

Table Layout etc

Location Manager

Notification Manager

Location Manager

Conclusion

• Android is a open source so there is no requirement of any type of instrument to make a application it’s a free of cost.

• Android is more reliable and it provide the facility to the programmer to connect one activity to the another activity

References Websites• http://developer.android.com• http://stackoverflow.com Books• Beginning Android by Mark L.Murphy• Android Application development by Wei-

Meng Lee• Professional Android development by Reto

Meier

Thank you!!! Any Queries???Don’t feel awkward