andriod developer training

Welcome to ANDROID DAY ONE CLASS

Android in a nutshell

www.kerneltraining.com/android-development

Product of OHA (Open Handset Alliance) led by Google.

Software Platform that provides a framework to develop applications for mobile devices.

It includes an OS, middleware and key applications.

Layered platform built on Linux kernel.

http://www.kerneltraining.com/


http://kerneltraining.com/android-development/

Android Powered Devices





Android Features


• Android’s UI includes Windows, Views, Widgets

• Android provides an integrated browser engine –Webkit

• Connectivity – Wi Fi, GPRS, Bluetooth, EDGE, 3G

• SQLite for structured data storage

• Supports GSM telephony, media, camera, compass, accelerometer (hardware dependent)

• Provides 2D and 3D graphics with OpenGL library




Design Philosophy


Small footprint

Power efficiency

Multitasking

Minimal startup time

Quick response to user activity

Support multiple screen

resolutions

Memory protection

Extensible




Platforms Roadmap


2008 1.5-Cupcake

20091.6-

Donut

2.0-Eclair

2.2-Froyo

2.3-Gingerbread3.0-Honeycomb

4.0-Icecream sandwich

4.1-Jelly bean

4.4-KitKat




OS market share –Q3 2014


Source: IDC.




Vendor market share –Q3 2014


Source: IDC.




Statistics galore!


• Smartphone market grew 27.2% year over year in 2014 Q3

• 2014 promises to close at nearly 1.3 billion shipments

• Samsung is the only top five company which had a negative change.

• Apple had its largest Q3 volume sale with the launch of iPhone 6.

• Xiaomi jumped to third position with triple-digit growth




Building Android Apps using






Click Finish





Project View

sign/Text Swit1 Project View

122

Design/Text Switch

3Editor View




SDK Manager


Project View

sign/Text Switch

• Used to download

Android SDK in modular

packages as and when

it is released

• Also used to download

latest contents

specifically whenever it

gets updated




AVD Manager


Project View

sign/Text Switch

• Create and manage Android Virtual Devices(AVDs)




Android Virtual Device(AVD)


Project View

sign/Text Switch

• A QEMU-based virtual mobile device

• An emulation tool used to design, debug, and test Android

applications in an Android run-time environment. The emulator

supports AVD configurations.

Emulated Device Key Keyboard Key

Home HOME

Back ESC

Call/dial button F3

Hangup/end call button F4

Search F5

Power button F7

Audio volume up button KEYPAD_PLUS, Ctrl-F5

Audio volume down button KEYPAD_MINUS, Ctrl-F6

Switch to previous layout orientation (for example, portrait, landscape)

KEYPAD_7, Ctrl-F11




Android Project Structure





Android app - Anatomy


Project View

sign/Text Switch

• java folder – contains

source files

• res – contains non-code

resources such as

images

• Gradle scripts – contains

build scripts used

internally

• Manifests – contains the

Android Manifest file




Debugging using DDMS(Dalvik Debug Monitor Server)


Project View

sign/Text Switch

Flat files




App Development Procedure


Project View

sign/Text Switch

Android API

SDK / NDK

Programming

Language

Data Handling

Flat files

Test, Sign & Package

AAPTKeytool

Publishing

GooglePlay




Views - Introduction


lGoogle

Play




Views


Project View

sign/Text Switch

Flat files

lGoogle

Play

Android provides a wide variety of UI Elements called views.

Following are some of the most commonly used views:

– Button

– TextView

– EditText

– ListView

A view can be customized by setting its properties at the time of

declaration in the layout xml file.

We can provide id to a view to be able to manipulate it using Java code.

– Checkbox

– RadioButton

– Spinner

– ImageView




TextView


Project View

sign/Text Switch

Flat files

lGoogle

Play

TextView is used as a UI component in Android to display non-

editable information in the UI.

<TextView> tag is used in the layout XML file to create a

TextView.

Some of the most important attributes for TextView are:

android:layout_width : specifies the width

android:layout_height : specifies the height

android:text : specifies the text displayed

android:id : specifies the id of the view




TextView


Project View

sign/Text Switch

lGoogle

Play

<TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerHorizontal="true"android:layout_centerVertical="true"android:text="Hi, this is my info

page“android:id="@+id/myMessage"

/>




TextView


Project View

sign/Text Switch

Flat files

lGoogle

Play

Adding android:id attribute to the TextView tag generates a unique id which is associated with the current TextView.

This id can be used to manage the TextView in the activity code as follows:

@Overridepublic void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);TextView tv =

(TextView)findViewById(R.id.myMessage);tv.setText("I have changed the text

dynamically!");}




Button


Project View

sign/Text Switch

Flat files

lGoogle

Play

<Button> tag is used to generate a button in an Android

application.

Some of the important attributes for button are:

— android:layout_width

— android:layout_height

— android:text

— android:id

The click of a button generates a click event

This event is handled by onClick() method of OnClickListener

interface




Questions?





THANK YOUfor attending Demo of





andriod developer training

Education

android sdk

android features

class android

android day

android virtual deviceavd

android virtual devicesavds

test android applications

android powered devices