Android Training

By: Adham Enayatwitter : @adhamenaya

fb.: adham.enayaa.it@hotmail.com

Session 2: Prepare Android Development Environment

Sunday, March 27, 2012

April 12, 2023 Open source Training (Android Course) Adham Enaya

Downloading development environment

• Eclipse IDE(Google-supported)– Download: http://www.eclipse.org/downloads

• Android SDK– SDK Manager– Android Platform– SDK samples …etc.– Emulator and debugger – Download: http://developer.android.com/sdk/index.html

• Android Development Tools(ADT)– Install plug-in: http://dl-ssl.google.com/android/eclipse

April 12, 2023 Open source Training (Android Course) Adham Enaya

Configuring the development environment

1. Installing the ADT plug-in:– Go to Help menu in eclipse -> Choose Install new

software -> Add -> Set the name and location of the plug-in .

2. Go to Window -> Preferences.3. Select Android -> Set the location of android

SDK folder.

April 12, 2023 Open source Training (Android Course) Adham Enaya

Android SDK & AVD Manager

• Helps to:– Browse the installed packages.– The available packages to install.– To create Android virtual devices – It is connected directly with Google servers to

install packages from them.– You can download :

• Android platforms, documentation, samples tools..• Third party Add-ons, i.e. Google APIs to use Google Maps

in the application.

April 12, 2023 Open source Training (Android Course) Adham Enaya

Creating Android Virtual Device (AVD)

• AVD: is and emulator instance modeling the actual device.

1. Go to window -> Android SDK and AVD Manger.

2. Select Virtual Devices-> enter the AVD properties:

1. Device name.2. Target platform ( i.e. Android 2.3- level 9).3. You can choose a specific hardware(i.e.

Create Hello World Application (1)

• In Eclipse -> New -> Project -> Android Project.

• Enter Project Name.– Choose Create New Project in workspace.

• Choose the build target ( The android platform you app runs on !)

• Click Next.

Create Hello World Application (2)

• Enter Application info:– Application Name ( User-friendly name).– Package Name (At least 2 identifiers i.e

adham.android).– Check create Activity to create a UI for the

application.– Set the Minimum SDK that you app will run on.– Finish !

Project Anatomy (1)

• src : a folder contains on the java source code for the project.

• R.java in gen folder: – R.java is eclipse generated java file.– We will not modify it anytime!– Contains memory references for all project

resources i.e. :• GUI objects, layout, strings values.

– Helps in accessing the res objects easily.

Project Anatomy (2)

• Android 2.3: jar files contains the core android libraries.

• assets: contains the resources for the application i.e. database or external file.

• bin: contains any external libraries.

Project Anatomy (3)

• res: – drawable : contains the images for the application

i.e. application icon.– drawable-hdpi : contains images for high

definition screens.– drawable-ldpi : contains images for low definition

screens.– drawable-mdpi : contains images for medium

definition screens.

Project Anatomy (4)

• layout: contains the xml- definition for the GUI layout and it’s components.

• values : contains the xml files the represents the constants values for the application i.e. strings.xml to store all constant strings.

Project Anatomy (4)

• AndroidManifest.xml: contains all information about the application.– The package name of the application.– Application version (<major>.<minor>.<point> )– Application icon.– Application name from strimgs.xml.– android:minSdkVersion: specifies the minimum

version of the OS on which the application will run.

Project Anatomy (5)

– Definition of all activities in the application.• The action for the intent filter is named

android.intent.action.MAIN to indicate that this activity serves as the entry point for the application. • The category for the intent-filter is named

android.intent.category.LAUNCHER to indicate that the application can be launched from the device’s Launcher icon.

April 12, 2023 Open source Training (Android Course) Adham Enaya

Any Question ?

Best,