Android Workshop: Day 1 Part 3

Android Application Development
Environment Setup

Ahsanul Karim
ahsanul.karim@sentinelbd.com
Workshop: Day 1 Part 3 Sentinel Solutions Ltd.
http://www.sentinelbd.com
http://androidstream.wordpress.com

Setting up Development Environment
System Requirements
Supported OS
1. Windows XP (32-bit), Vista (32- or 64-bit), or Windows 7
(32- or 64-bit)
2. Mac OS X 10.5.8 or later (x86 only)
3. Linux (tested on Ubuntu Linux, Lucid Lynx)

Supported Development Environment (Eclipse IDE based)
1. Eclipse 3.4 (Ganymede) or greater/Eclipse Classic (versions
3.5.1 and higher)
2. JDK 1.5 or 1.6
3. ADT Plugin

Setting up Development Environment(Contd.)
To set up the development environment, we need:
1. Java Development Kit (JDK 1.5+, 1.6 is preferable)
2. Eclipse IDE
3. Android SDK

Setting up Development Environment (Contd.)
Android SDK Link: http://developer.android.com/sdk/index.html

Download and Install the SDK starter package from the table above
(Highlighted)

Android SDK Setup (3)
3. ADT Plugin for Eclipse

ADT Plugin:
Android Development Tools (ADT) is a plugin for the Eclipse IDE for

1. extending the capabilities of Eclipse to set up new Android projects
2. creating an application UI
3. adding components based on the Android Framework API
4. debugging your applications using the Android SDK tools
5. exporting signed (or unsigned) APKs in order to distribute your application

We’ll see the 5 points gradually during development

4. Installing the ADT

1. Start Eclipse, then select Help >
Install New Software....
2. Click Add, in the top-right
corner.
3. In the next window, you'll see a
list of the tools to be
downloaded. Click Next.
4. Read and accept the license
agreements, then click Finish.
5. When the installation
completes, restart Eclipse.

5. Set SDK path

1. Start Eclipse, then select
Window > Preferences
2. Browse and show the path of
Android SDK.
3. Press Apply and OK.

Development Environment Setup is now completed!

In Our Lab (1)

In Our Lab (2)
First we install JDK

We have already done that

In Our Lab (3.1)
We’ll setup Eclipse Indigo
Stand-alone Eclipse: just decompress and run eclipse.exe

You can create a shortcut in the desktop for eclipse.exe

In Our Lab (3.3)

Choose your WorkSpace

In Our Lab (3.5)

In Our Lab (3.6)

We’ll become familiar to our new IDE gradually and I swear you’ll start loving it

In Our Lab (4.1)
We’ll setup ADT Plugin

In Our Lab (4.2)

In Our Lab (4.3)

In Our Lab (4.4)

In Our Lab (4.5)

In Our Lab (4.6)

In Our Lab (4.7)

Adding ADT Pluging is DONE… You’ll now get a message

In Our Lab (5.1)
We’ll setup android SDK
After restarting Eclipse we get:

Don’t forget to ask me about the red marks

In Our Lab (5.2)
SDK and AVD Manager: If we click on it:

So, we have to set the location of Android SDK and show it to our IDE

To do so….

In Our Lab (5.3)

In Our Lab (5.4)

In Our Lab (5.5)

In Our Lab (5.6)

In Our Lab (5.6)
We’ll setup DDMS

Now We are Ready

Let’s say “Hello” to the Android World!

Let’s Go Deep…
Created Project has the following structure

Project Structure

-Source (src)
-Generated Class (gen)
-Android 1.6 library
-Assets (assets)
-Resource(res)
-drawable-hdpi
-drawable-ldpi
-drawable-mdpi
-layout
-values
-AndroidMenifest.xml
-default.properties

Let’s Go Deep… (Contd.)
To run the app in emulator, we have to do the following steps:

1. Create AVD (Android Virtual Device)
2. Create Run Configuration
3. Run the Application

To run the app in device, we have to do the following steps:

1. Install device driver
2. Connect device through USB
4. Run the Application

We’ll run the app in emulator for now

1. Create AVD (Android Virtual Device)
Use Android SDK & AVD Manager to create AVD


1. Create a Run
Configuration
2. Browse and select
the project to run

3. Select AVD & Run

Click Run to start AVD/emulator

Result in Emulator

Now its time to analyze how it works

Project Structure…
Created Project has the following structure

Project Structure

-Source (src)
-Generated Class (gen)
-Android 1.6 library
-Assets (assets)
-Resource(res)
-drawable-hdpi
-drawable-ldpi
-drawable-mdpi
-layout
-values
-default.properties

Project Structure (Contd.)
-Source (src)
We have used only one class here which is an Activity named HalloActivity. We’ll
describe about Activity in detail with lifecycle shortly. For now we can consider
Activity as Android analogue for the window or dialog in a desktop application. It
can load view from xml layout (here main.xml under res/layout folder)

In the HelloActivity class the view
of the Activity is set from main.xml
given below

-res/layout/main.xml
1. UI Layout can be defined from source code using View or by layout xmls.
2. The layout xml can be generated by visual tool given by ADT

-res/drawable
1. From Android 1.6 to support different screen sizes and screen densities graphic files
are kept in 3 different folders drawable-hdpi, drawable-ldpi and drawable-mdpi
2. In our current project, they contain only default icon file with different dimensions
to support devices with different screen resolution.
-assets
Holds other static files you wish packaged with the application for deployment
onto the device. In this project, we have none
-gen/R.java -values/strings.xml


XML file describing the application being built and what components –
activities, services, etc. – are being supplied by that application

Android Workshop: Day 1 Part 3

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Android Workshop: Day 1 Part 3