Engineering and Industrial Mobile Application (APP) Development

Technology Training that WorksTechnology Training that Workswww.idc-online.com/slideshare

Engineering and Industrial Mobile Application (App) Development


Day 3

Day 2

Day 1

Topics• Introduction• Environment Setup• Basic Project

– Starting Out

– User Interface Design

– Coding and Behaviour

– Android Resources and Feeds

– Long-running processes

– Creating Home Screen Widgets

– Publishing to Play Store

• Advanced Development– Task Reminders

– Menu Design and Lists

– User Input

– Dynamic & Multi-Pane UI

– Relative Layout

– Persistent Data Storage

– Alarm Manager

• Advanced Development cont.– Status Bar Updates

– Preferences Framework

– Multi-Device Support and Tablet Development

– Porting to tablets

– Beyond Google


Android:• An operating system

• was designed for mobile, touch-screen devices

• is Linux-based

• uses open source code

• can be connected to other devices

• Android Inc. established in 2003– at the time, for non-touch

devices

IntroductionBackground, history of app development

• Google buys Android Inc 2005

• Apple iPhone released in 2007

• Open Handset Alliance formed in 2007– manufacturers of H/W and S/W

• Android SDK released in 2008

• First Android phones released


IntroductionBackground, history of app development

Year Version Name API Distribution

2008 1.6 Donut 4 0.1%

Source: Murach’s Android Programming, 2013 (Author: Joel Murach)

2009 2.1 Eclair 7 1.7%

2010 2.2 Froyo 8 4.0%

2010 2.3-2.3.2 Gingerbread 9 0.1%

2010 2.3.3-2.3.7 Gingerbread 10 39.7%

2011 3.2 Honeycomb 13 0.2%

2011 4.0.3-4.0.4 Ice cream sandwich

15 29.3%

2012 4.1 Jelly bean 16 23.0%

2012 4.2 17 2.0%

2013 4.3 18 0%


Introduction

Why develop for Android?

– Free & open O/S

– Big market share

– Multi-device

– Maintained by Google

– Manufacturer participation

– Existing marketplace

– Short time to market

The latest figures ...

Android taking up 81% of the marketiOS at 16% Windows Phone 3%”

Preston Gralla ComputerWorld, May 13, 2014


Introduction

Why develop for Android?

– Accessory supportOpen Accessory Support

allows

external USB hardware

to interact with

an Android device


Introduction• Features

– Java– Intents (Action + Data)– Cursor-less controls– View– Multi operations / threads– Background services– Fragments– Loaders– Support Library– Action Bar– Widgets– Touch-screen– Sensors– Multimedia– Security– Online


Introduction


Requirements

• Java programming knowledge

• Understanding of XML

• Computer hardware and software:– 1.6GHz– 1GB RAM– 3GB HDD space– Windows XP– Mac OS X 10.5.8– Ubuntu Linux


• IDE

• SDK

• ADT

• AVD

Terminology

- Integrated Development Environment

- Software Development Kit

- Android Development Tool (plug-in)

- Android Virtual Device (Emulator)


Configure Android SDK

and ADT

Install and run Eclipse

Install Android & Eclipse

components

Write java code in Eclipse

Emulate the output

Run on an Android device

Android Development & Deployment


New Android project

• In Eclipse start a New Android Project


New Android application fieldsApplication Name: The name that users will see

Project Name: Internal project & folder names

Package Name: Package namespace for Java programming

Minimum Req SDK: Minimum version support

Target SDK: Highest version tested

Compile With: Version used to compile the app.

Theme: User Interface style


Create a new project Create custom launcher icon:The icon used to start the app

Create activityMakes a default “activity” (User Interface)

Mark this project as a libraryTo be used for importing into other apps

Create project in WorkspaceUse the default workspace or another

Working sets:Eclipse can use Working Sets to groups projects


Starting Out

• Configure Launcher Icon

• A set of four generalized densities:

– ldpi (low), – mdpi(medium),– hdpi (high), and – xhdpi (extra high)


Aside: Supporting multiple screensDensity-independent pixelssmall screens are at least 426dp x 320dp

normal screens are at least 470dp x 320dp

large screens are at least 640dp x 480dp

xlarge screens are at least 960dp x 720dpA set of four generalized densities:

ldpi (low), mdpi(medium),hdpi (high), and xhdpi (extra high)


Activity template

Blank: Standard action bar, and navigation tabs

Full screen: Toggles UI visibility on user interaction

Master/Detail Flow: Collection of objects / menu with details for each object. Tablets and handsets


Starting OutActivity Name: Name of activity class

Layout Name: Layout name for activity layout

Fragment Layout: The name of the content fragment

Navigation Type: The type of navigation to use – Swipe, Action bar tabs, Action bar spinner, and Navigation drawer.


Starting Out

• Auto-generated filesApp behaviour (src): Actions coded in Java

gen: Java code generated as app is developed

Android: Default Android libraries

Assets: Images, raw binary assets

Bin, libs: referencing third party libraries

Resources (res): UI layouts, strings, colours, etc. defined in XML (External)

Config files: General configuration of app resource integration


Auto-generated java class

Navigate to the code


Android Development with Eclipse

The Wizard creates an override of the onCreate method of Activity

buttonAct is a sub-class of Activity


Activities

• The main Activity class is a child of the Activity parent class

• An Activity is a single entity that is used to perform actions

• An app may have many separate activities– the user interacts with them one at a time

• onCreate() is the default method called by the Android system when your Activity starts

– it is where you should perform all initialization and User Interaction setups

• An Activity usually has a user interface


• The output will come from default values in the class “R”• More on “R” later• First let’s run the code

Where are the values?


Run the code

Run the application


Run as Android

Application


Emulating the output• Run app using the “Run” button

• The emulator will automatically start the Hello World app

• Alternatively you can Start the Emulator from the AVD Manager


Emulator

The Eclipse plugin:•automatically creates a new run configuration for your project •& launches the Emulator

The emulator might take several minutes to boot

When the emulator is booted, the Eclipse plugin:•installs your application and•launches the default Activity


Emulator

The text below is also a String found in strings.xml

The text in the grey bar is the application title

•The Eclipse plugin creates this text automatically

•The string is defined in res/values/strings.xml & referenced by AndroidManifest.xml


Copy .apk to device

You could copy the app to a device and run it …


DO YOU WANT TO KNOW MORE?

If you are interested in further training or information, please visit:

http://idc-online.com/slideshare

Engineering and Industrial Mobile Application (APP) Development

Engineering

Transcript of Engineering and Industrial Mobile Application (APP) Development