Android overview

1

COLLEGE OF ENGINEERING AND TECHNOLOGY

ANDROIDAN OPEN HANDSET ALLIANCE

Submitted By:

Shubhangi Arora

10ECTCS111

Submitted To:

Mrs.Sunita Choudhary

(H.O.D. )

2

INDEX

What is Android? Features of Android Android versions Technology used Setup Emulator AVD Activity Creating a project Project components Xml R class ListView Intent SharedPrefrences Gallery SQLite Database

3

WHAT IS ANDROID……..? Android is an open source operating system Mobile apps Linux based (2.6 kernel) Create by Google and Open Handset Alliance.

4

FEATURES OF ANDROID

Messaging Web browser Multi-touch Multitasking Video calling Multiple language support Connectivity Bluetooth Media support External storage Java support

5

ANDROID VERSIONS Android 1.5 Cupcake(API Level 3) Android 1.6 Donut(API Level 4) Android 2.0 Eclair(API Level 5) Android 2.0.1 Eclair(API Level 6) Android 2.1 Eclair(API Level 7) Android 2.2 Froyo(API Level 8) Android 2.3 Gingerbread(API Level 9) Android 2.3.3 Gingerbread(API Level 10) Android 3.0 Honeycomb(API Level 11) Android 3.1 Honeycomb (API Level 12) Android 3.2 Honeycomb (API Level 13) Android 4.0 Ice Cream Sandwich(API Level 14) Android 4.0.3 Ice Cream Sandwich (API Level 15) Android 4.1 Jelly Bean(API Level 16) Android 4.2 Jelly Bean (API Level 17) Android 4.3 Jelly Bean (API Level 18) Android 4.4 Kit Kat(API Level 19)

6

TECHNOLOGY & TOOLS USED

DataBase used: SQLite Programming Languages: XML && java IDE :Eclipse,ADT

7

SETUP

Download the Android SDK. Install the ADT plugin for Eclipse (if you’ll use

the Eclipse IDE). Download the latest SDK tools and platforms

using the SDK Manager.

8

EMULATOR

A virtual mobile device. Develop and test Android applications without

using a physical device.

9

AVD MANAGER

10

AVD

Creation of AVD Default AVD

11

Activity

An Activity is an application component that provides a screen with which users can interact in order to do something, such as dial the phone, take a photo, send an email. Each activity is gives a window in which to draw its user interface.

An Application usually consists of multiple activities that are loosely bounded to each other.

12

13

CREATING A PROJECT

14

PROJECT COMPONENTS

src – your source code gen – auto-generated code (usually

just R.java) Included libraries Resources Drawables (like .png images) Layouts Values (like strings) Manifest file

15

XML

Used to define some of the resourcesLayouts (UI)Strings

Manifest file Shouldn’t usually have to edit it directly,

Eclipse can do that for you Preferred way of creating UIs

Separates the description of the layout from any actual code that controls it

Can easily take a UI from one platform to another

16

R CLASS

Auto-generated: you shouldn’t edit it Contains IDs of the project resources Enforces good software engineering Use findViewById and Resources object

to get access to the resourcesEx. Button b =

(Button)findViewById(R.id.button1)Ex.

getResources().getString(R.string.hello));

17

LISTVIEW

ListView is a view group that displays a list of scrollable items.

18

INTENT

Intent are asynchronous messages which allow application components to request functionality from other Android components. Intents allow you to interact with components from the own and other applications. For example an activity can start an external activity for taking a picture.

Ex. Intent in=new Intent(Act.this,Klm.class);startActivity();

currentclass

reference

newActivitywhere wehave to go

19

20

SHAREDPREFERENCES

For any particular set of preferences, there is a single instance of this class that all clients share. Modifications to the preferences must go through an SharedPreferences.Editor object to ensure the preference values remain in a consistent state and control when they are committed to storage.

21

ABOUT SQLITE

SQLite is an embedded SQL database engine. SQLite does not have a separate server process. SQLite reads and writes directly to ordinary disk

files.

22

SQLITE DATABASE

SQLiteDatabase has methods to create, delete, execute SQL commands, and perform other common database management tasks.

Database names must be unique within an application, not across all applications.

23