Android

Development

Session 1

Agenda

What is Android ?

What tools will be used in development ?

Installation and configuration

First App “Hello World Example” and Run it

What files exists in Android project ?

How to install App in real phone or tablet ?

How to publish App in Google Play ?

What is Android ?

An open-source software platform

Used primarily to power mobile phones

The open and customizable nature of Android allows it to be used on other electronics

Laptops, Tablets

Smart TVs (Google TV)

Cameras (Galaxy Camera)

Smart Glasses (Google Glass)

Android@Home

Tools

ADT Bundle

Code will be in JAVA

Installation

Install JRE

Unpack the ZIP file (named adt-bundle-

<os_platform>.zip) and save it to an

appropriate location, such as a

"Development" directory in your home

directory.

Open the adt-bundle-

<os_platform>/eclipse/ directory and

launch eclipse.

a set of programming tools for

developing Java applications.

Hello World

Creating a New Project1. In Eclipse, choose File→New→Android Application Project If Android Project is not an option under File→New, choose Other and look

for Android Project in there.

2. Type „HelloWorld‟ as a project name A project name should be one word. (“CamelCase” naming convention is

preferred)

3. Next, you need to choose the build target. The build target tells the build tools which version of the Android

platform you are building for.

4. You need to fill out your project properties next. “The application name “: is the plain English name of your application.

“The package name”: for example „android.section‟

5. Specify An activity that is going to be represented by a Java class. Its name should adhere to Java class naming conventions: start with

an upper-case letter and use CamelCase to separate words.

So, type „HelloWorld‟ for your activity name or leave it as „HelloWorldActivity‟.

6. Finally, click on the Finish button, and Eclipse will create your project.

Hello World

app name that appears to users

name of your project directory and the name visible in Eclipse.

namespace for your app

Run - Hello World

First, We will create new Android Virtual Machine

(AVD)

In Eclipse, Window AVD Manager New

Specify Name then target (2.1)

Finally, Create AVD

Then right click on the project run as

Android Application

src

Contains the .java source files for your project

Android Project Files

gen Contains the R.java file, a compiler-generated file

that references all the resources found in your

project. You should not modify this file

assets Contains all the raw data used by your application,

such as HTML, text files, databases … etc

bin Contains output directory of the build. This is where

you can find the final .apk file and other compiled resources

Android Project Files

libs Contains project libraries

res Contains all the resources used in your application

res/drawable Contains bitmap files (PNG, JPEG, or GIF)

Android Project Files

res/layout Contains definition for the user interface (UI) of your

application

res/menu Contains XML files that define application menus

res/values Contains XML files that contain a collection of

resources, such as string and color definitions

Android Project Files

res/values/strings Contains all the strings in our program

AndroidManifest.xml The control file that describes the nature of the

application

What permissions are requested, and external libs needed

What API Levels are supported or required

Install App

Copy the APK file to your Android’s memory

card and insert the card into your phone.

Download and install the Apps Installer

application from the Android Market

Once installed, the Apps Installer will display

the APK files on the memory card.

Click and install your APK files.

Publish App

Visit the Google Play Developer Console at https://play.google.com/apps/publish/.

Enter basic information about your developer identity— developer name, email address, and so on. You can modify this information later.

Read and accept the Developer Distribution Agreement that applies to your country or region. Note that apps and store listings that you publish on Google Play must comply with the Developer Program Policies and US export law

Pay a $25 USD registration fee using Google Wallet. If you don't have a Google Wallet account, you can quickly set one up during the process.

When you need to select your Emulator

device (mobile, tablet) manually

Go to Run Run Configurations Target tab

Always prompt to pick device.

Note

References

http://en.wikipedia.org/wiki/Android_(opera

ting_system)

http://en.wikipedia.org/wiki/Google_Glass

http://en.wikipedia.org/wiki/Google_TV

http://developer.android.com/training/inde

x.html

Samsung GALAXY S4

http://en.wikipedia.org/wiki/Graphics_displa

y_resolution

http://developer.android.com/distribute/go

ogleplay/publish/register.html

Questions