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o Introduction About
Android.
o IDE Introduction.
o Setting Up
Environment.
o Dalvik Virtual
Machine.
Android
Introduction
Session 2
2
Tenet Technetronics
13 November, 2013
o Introduction About
Android.
Android
Introduction
Session 2
3
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What is Android? o Operating system based on Linux.
o Open Source by Search Giant.
o Apps typically written in Java.
o Apps run on the Dalvik Virtual Machine(DVM).
o November 2007, Open Handset Alliance formed to develop open standards for mobile devices.
Open Handset Alliance:
o Google formed a group of hardware, software, and
telecommunication companies with the goal of
contributing to Android development
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Android
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History
o Android Inc. was founded by Andy Rubin, Rich miner, Nick
sears and Chris White in 2003.
o Acquired by Google in July 2005.
o The first android phone was HTC G1 Dream(with cupcake)
Released in October 2008.
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Android Evolution 7
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Android Features o Open Source framework
o Very simple.
o Availability of Apps.
o Supports 2D,3D graphics.
o Java support.
o Easy to customize.
o Better Notification System(email and various widgets).
o SQLite Database.
o Bluetooth, EDGE,3G,4G and Wi-Fi .
o Camera ,GPS,Compass, and accelerometer.
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Framework 13 November, 2013
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Application Components
Activities – visual user interface focused on a single thing a user can do
Services – no visual interface – they run in the background
Broadcast Receivers – receive and react to broadcast announcements
Content Providers – allow data exchange between applications
13 November, 2013
Tenet Technetronics
o Introduction About
Android.
o IDE Introduction.
Android
Introduction
Session 2
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IDE: (Integrated
Development Environment) o Programming Environment that consists of
A Code Editor,
A compiler,
A Debugger,
A GUI builder.
o User-Friendly Framework.
o Eclipse, Net beans, Android Studio, Processing, Xamarin Studio, etc.,
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o Introduction About Android.
o IDE Introduction.
o Setting Up
Environment.
Android
Introduction
Session 2
13
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13 November, 2013
Development Tools:
o Java JDK.
o Eclipse or Net beans.
o Android Development Tools(ADT Plugin).
o Android latest SDK
o Programming Languages
Java
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o Run Eclipse.chm file and proceed with the
instructions
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Installation
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o Introduction About
Android.
o IDE Introduction.
o Setting Up
Environment.
o Dalvik Virtual
Machine.
Android
Introduction
Session 2
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Dalvik Virtual Machine o Java-” write once, run anywhere”.
o Software that runs the apps on Android devices.
o Invented by Dan Bornstein(Google).
o Register-based.
o A tool called dx is used to convert some (but not all) Java .class files into the .dex (Dalvik Executable)format.
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DVM
o run on a slow CPU
o Multiple classes are included in a single
.dex file.
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source code Java compiler dx
(conversion tool) .class file
.dex file (Dalvik
executable)
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o First Application (Hello World)
o Layouts & Drawables
o Activity Navigation
o View Group & Views
o Manifest & Permissions
o Menus & Tabs
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Applications
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o First Application (Hello World)
o Layouts & Drawables
o Activity Navigation
o View Group & Views
o Manifest & Permissions
o Menus & Tabs
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Applications
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Select File -> New -> Other -> Android -> Android Project
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o First Application (Hello World)
o Layouts & Drawables
o Activity Navigation
o View Group & Views
o Manifest & Permissions
o Menus & Tabs
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Applications
13 November, 2013
Layouts
o Linear Layout
o Relative Layout
o Frame Layout
o Table Layout
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Linear Layout
oAll the elements are displayed in a linear
fashion
oHorizontally or Vertically
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Relative Layout
o Designed to display child View controls in relation to each other
o Every element arranges itself relative to other elements or a parent element.
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Table Layout
o Designed to organize
child View controls into rows and columns.
o Divide your layouts
into rows and columns.
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Frame Layout oDisplay only a single UI
element at a time, or multiple
UI elements within Frame
Layout
oEach element will be
positioned based on the top
left of the screen.
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Drawables
o referencing an image
file from your project
resources.
o Supported file types are
PNG and JPG.
o Background image for
Layout, button, etc..
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o First Application (Hello World)
o Layouts & Drawables
o Activity Navigation
o View Group & Views
o Manifest & Permissions
o Menus & Tabs
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Applications
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Activity Navigation
o Moving From one Activity to another.
o Pass values from one activity to another
Activity (Intents).
o Example.
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o First Application (Hello World)
o Layouts & Drawables
o Activity Navigation
o View Group & Views
o Manifest & Permissions
o Menus & Tabs
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Applications
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Views And View Groups
we can declare the layout in two ways:
o Programmatically
o Declaring the widgets or UI elements in
XML.
The layout consists of Views and View
Groups.
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View Groups
o Layouts are called View groups
o In which the child Views or View Groups
are arranged either vertically or
horizontally.
o Example
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o First Application (Hello World)
o Layouts & Drawables
o Activity Navigation
o View Group & Views
o Manifest & Permissions
o Menus & Tabs
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Applications
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Manifest and Permissions o A resource file which contains all the details
needed by the android system about the
application.
o This is an xml file which must be named as
AndroidManifest.xml and placed at application
root.
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Android Manifest It allows us to define
o The packages, API, libraries needed for the application.
o Basic building blocks of application like activities, services and etc.
o Details about permissions.
o Set of classes needed before launch.
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Elements of AndroidManifest.xml o uses-permission
o permission
o permission-group
o permission-tree
o Instrumentation
o uses-sdk
o uses-configuration
o uses-feature
o supports-screens, compatible-screens
o supports-gl-texture
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Elements of Manifest o uses-permission purpose of security.
o permission Access Control.
o uses- sdk the platform compatibility.
o uses-configuration set of hardware and software requirement.
o supports-screens,
and compatible-screens screen configuration mode and size of the screen
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Example
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o First Application (Hello World)
o Layouts & Drawables
o Activity Navigation
o View Group & Views
o Manifest & Permissions
o Menus & Tabs
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Applications
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Menu o A common user interface component in
many types of applications.
o Interface for managing the items in a menu.
o If you're developing for Android 2.3 or lower, users can reveal the options menu panel by pressing the Menu button.
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Menu
o Context menus a floating list of menu items that appears when a user
touches and holds a particular item displayed in the view
o Options menus the one that appears when a user touches the menu
button on the mobile.
o Sub menus a floating list of menu items that appears when the user
touches a menu item that contains a nested menu
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Tabs o A nice way to present multiple
thing on a Single Screen
o Tabs in the action bar make it easy to explore and switch between different views or functional aspects.
o Example
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