Getting start on Android - By Amit Yadav

Why Android? Introduction to Android How to get started? Emulator Dive in Resource available Q&A

Topics covered

Open market place Instant publishing & feedback You can create anything Create background apps(mail notifications,

FB updates, twitter etc)

Why Android?

Develop on ANY platform FREE Windows Linux Mac

Why Android? (cont…)

Open software platform for mobile development A complete stack – OS, Middleware, Applications An Open Handset Alliance (OHA) project Powered by Linux operating system Fast application development in Java Open source under the Apache 2 license

Introduction to Android

Android can run on multiple platforms Mobiles Notebook Desktop

Why Android? (cont…)

Android Architecture

Linux Kernel

Works as a HAL(H/w Acceleration Layer) 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 Framework

API interface Activity manager – manages application life

cycle.

Applications

Built in and user apps Can replace built in apps

Things to start with Java Developer Kit(JDK) Eclipse Android SDK Android Developer Tool(ADT)

How to get started? (cont…)

How to get started? (cont…)

Emulator

Create new Android Application Project Application Name Project Name Package Name Minimum Required SDK Target SDK Compile With Theme

android create project --target <target-id> --name MyFirstApp \ --path <path-to-workspace>/MyFirstApp --activity MainActivity \ --package com.example.myfirstapp

Dive in…

Dive in…(Application Building Blocks)

AndroidManifest.XML Activities Views & ViewGroup Intents Services Notifications Content Providers

Dive in…(Manifest File)

The manifest file describes the fundamental characteristics of the app and defines each of its components.

Dive in…(Activities)

This represents the presentation layer of an Android Application e.g. a screen which user sees.

An Android app can have several activities and the app can switch between these activities during runtime

Dive in…(Views & ViewGroup)

Views are basic building blocks Views object are usually UI widgets(buttons,

text field etc) ViewGroups are invisible containers Organized as tree to build the GUI Described as an XML in the layout resource

Dive in…(Intents)

Intents are used to move from Activity to Activity

Describes what an application wants Provides late runtime bindings

Dive in…(Services)

They run in the background They don’t interact with users Run on the main thread of the process Is kept running as long as

Is Started Has Connections

Dive in…(Notifications)

Notify the users about the events NotificationManager is used for this purpose Types

Persistent icon Turning LEDS Sound or Vibrations

Dive in…(Content Providers)

ContentProviders are objects that can Retrieve Data Store Data

Data is available for all the applications Only way to share data across packages Backend is SQLite

Resource available

http://androidcore.com/home.html Here you can find more than 300 tutorial for android this is the best site for android.

http://www.androidpeople.com/android-tutorial/ This is the another good site for android.

http://developer.android.com This is site here you find all the documentation of Android.

http://en.wikipedia.org/wiki/Android_(operating_system) This is the link of Wikipedia for Android

http://www.vogella.de/articles/Android/article.html#overview This is the another good site for Android Development.

http://www.pdftop.com/ebook/android+tutorial/ This is the link here you find lot of book related to Android

http://code.google.com/p/android-wheel/ This is the side here you find source code of the projects.

Q&A

Q&A