mobile business

1

Mobile Business

Cuauhtemoc Delgado

28.11.2007

Development of Business Applications

2

Mobile Business

Presentation Contents:

Background

WAP

WML

WMLScript

Demo

3

Background (1/2)‏

Wireless data market and the Internet are growing very

quickly. New and exciting information services.

Users in movement. Services without desktop access.

Most of the original technology developed for the Internet

has been designed for desktop and larger computers.

Most of the designs for medium to high bandwidth,

generally reliable data networks.

source: Wireless Application Protocol Forum – WAP-210-WAPArch-20010712-a.pdf

4

Background (2/2)‏

Services for Hand-held devices?, but...

Less powerful CPUs,

Less memory (ROM and RAM),

Restricted power consumption,

Smaller displays, and

Different input devices (e.g., a phone

keypad).

source: Wireless Application Protocol Forum – WAP-210-WAPArch-20010712-a.pdf

5

Mobile Business

The solution ?

6

Wireless Application Protocol

WAP is published by the WAP Forum, founded in

1997 by Ericsson, Motorola, Nokia, and Unwired

Planet. Forum members now represent over 90%

of the global handset market, as well as leading

infrastructure providers, software developers and

other organizations

7

Mobile Business


Background

WAP

WML

WMLScript

Demo

8

What is WAP?

http://www.w3schools.com/wap/wap_intro.asp

The wireless industry came up with the idea of WAP. The point of this standard was to

show internet contents on wireless clients, like mobile phones.

WAP stands for Wireless Application Protocol

WAP is an application communication protocol

WAP is used to access services and information

WAP is inherited from Internet standards

WAP is for handheld devices such as mobile phones

WAP is a protocol designed for micro browsers

WAP enables the creating of web applications for mobile devices.

WAP uses the mark-up language WML (not HTML)

WML is defined as an XML 1.0 application

The wireless services provided by WAP are independent of the underlying digital

wireless network technology

9

WAP outside

Checking train table information

Ticket purchase

Flight check in

Viewing traffic information

Checking weather conditions

Looking up stock values

Looking up phone numbers

Looking up addresses

Looking up sport results

10

WAP MODEL

WAP CLIENT

WAP GATEWAY

WEB BROWSER

http://www.javaworld.com/javaworld/jw-06-2000/jw-0602-wap.html?page=2

11

WAP BROWSER

* WAP uses a Micro

Browser.

* minimal demands

on hardware, memory

and CPU.

* display restricted

mark-up language

called WML.

12

WAP GATEWAY

Intermediary between the mobile and Internet networks.

Takes care of the necessary binary encoding of content.

Can also translate WML to/from HTML

DNS resolution.

http://articles.techrepublic.com.com/5100-22-1045252.html

13

WEB SERVER

HTML

DYNAMIC HTML

WML

DYNAMIC WML

14

Mobile Business


Background

WAP

WML

WMLScript

Demo

15

XML first...

XML stands for

EXtensible Markup

Language.

XML is designed to

describe data and to

focus on what data is.

<note>

<to>SnFco.</to>

<from>Fulda</from>

<subj>Reminder</subj>

<body>

Start working!, demo on

1st. December

</body>

</note>

16

What is WML?


WML stands for Wireless Markup Language. It is a

mark-up language inherited from HTML, but WML

is based on XML, so it is much stricter than HTML.

WML is used to create pages that can be displayed

in a WAP browser. Pages in WML are called

DECKS. Decks are constructed as a set of

CARDS.

Home pages .wml instead of .html





17

WML Overview

WML Tags

WML Decks and Cards

WML examples

18

WML Tags

WML is mostly about text.

The use of tables and images is strongly

restricted.

Since WML is an XML application, all tags are

case sensitive (<wml> is not the same as

<WML>)‏

All tags must be properly closed.

19

WML Decks And Cards

WML pages are called DECKS.

DECKS are constructed as a set of CARDS.

CARDS related to each other with links.

When a WML page is accessed all the cards in the

page are downloaded from the WAP server.

Navigation between the cards is done by the phone

computer - inside the phone - without any extra

access trips to the server.http://www.w3schools.com/wap/wap_intro.asp





20

WML examples

<?xml version="1.0"?>

<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN"

"http://www.wapforum.org/DTD/wml_1.1.xml">

<wml>

<card id="city" title="Fulda Guide">





<a title="Education" href="#education">Education</a> 

<a title="Restaurants" href="#food">Restaurants</a> 

<a title="Shopping" href="#shopping">Shopping</a> 

<a title="Weather" href="#weather">Weather</a> 



</card>

<card id="food" title="Restaurants">

<img src="food.bwmp" alt="logo"/>



<a title="Chinese" href="#chinese">Chinese</a> 

<a title="German" href="#german">German</a> 

<a title="Greek" href="#greek">Greek</a> 

<a title="Italian" href="#italian">Italian</a> 



</card>

</wml>

21

WML tags summary

Paragraphs

Line breaks

Text Formating

Tables

Links

Images (.wbmp)‏

input fields

select an option

go, previous, refresh

set and read variables

22

Mobile Business


Background

WAP

WML

WMLScript

Demo

23

What Is WMLScript?

WMLScript is the scripting language used in WML pages

WMLScript is a light version of the JavaScript language

WML scripts are not embedded in the WML pages. WML pages

only contains references to script URLs

WMLScript is compiled into byte code on the server before it is

sent to the WAP browser

WMLScript is a part of the WAP specification

Used to validate user input, generate dialog boxes, view error

messages.http://www.w3schools.com/wmlscript/default.asp

24

Calling WmlScript

<?xml version="1.0"?>

<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN"

"http://www.wapforum.org/DTD/wml_1.1.xml">

<wml>

<card id="no1" title="Go to URL">

<do type="options" label="Go">

<go href="check.wmls#go_url('yahoo')"/>

</do>

</card>

</wml>

/* this is check.wmls */

extern function go_url(the_url)

{

if (the_url=="yahoo")

{

WMLBrowser.go("http://wap.yahoo.com/")

}

}

25

WmlScript Summary

Dialogs Library

Float Library

Lang Library

String Library

Url Library

WmlBrowser Library

26

Mobile Business


Background

WAP

WML

WMLScript

Demo