Social App Development with Qt

Nokia Dev Con 2011, INAICTA, jakarta, oct 5, 2011

about andri yadi a (at) dycode (dot) com @andri_yadi

4 years in a row

start my own company & code for food

8 years in mobile development

a movie freak

the ceo

about arif setiawan arif (at) dycode (dot) com @ken121f

master degree in computer engineering

hardcore c/c++ developer

Nokia platform team lead

raise your hand if you’re

developers!

first of all, it’s “qute” not “qiu ti” nor “qi te”

C++ platform-independent

multi platform native-app development

operating systems (Symbian, MeeGo, android, MacOS,

Windows)

native apps access operating system & its function directly

multi platform native-app development

operating systems (Symbian, MeeGo, android, MacOS,

Windows)

Qt framework same code works on all platforms, covers many usecases (GPS, camera)

all you need is Qt SDK 1.1.3

released on Sept 29, 2011

Qt Quick Qt User Interface Creation Kit

Qt Meta-object Language (QML) declarative programming no C++ skill required Qt Creator IDE

Qt mobility bearer management API

contacts

location

messaging

multimedia

publish & subscribe

sensors

service framework

mobility 1.0

camera

document gallery

feedback

Landmarks, map, navigation

organizer

mobility 1.1

mobility 1.2 it’s all about NFC, final for MeeGo system information

social media apps

users need & want to pay social apps

social media apps

social apps on Ovi

social media apps build new social platform and/or leverage existing ones

OAuth

OAuth 1.0 under the hood

complicated! kqoauth is your

friend

show provider’s auth. page in embedded

browser

user grants authorization

redirect to dummy URL with access_token

parse access_token value from URL

save access_token to persistent storage

consumer provider

/dialog/oauth? client_id={APP_ID}&response_type=token&redirect_uri={DUMMY_URL}&scope={SCOPE}

user grants authorization

http://{DUMMY_URL}/#access_token={ACCESS_TOKEN}&expires_in={EXPIRE}

parse access_token value from URL

save access_token to persistent storage

consumer provider

if you think that’s still too hard, there’s thin wrapper

qfacebook(http://gitorious.net/qfacebook)

/oauth2/authenticate? client_id={CLIENT_ID}&response_type=token&redirect_uri={DUMMY_URL}

user grants authorization

http://{DUMMY_URL}/#access_token={ACCESS_T

OKEN}

parse access_token value from URL

save access_token to persistent storage

consumer provider

demo

Movreak movie grid city

Movie detail

Share button

Harmattan ShareUI

QML

Twitter Wrapper

kqOAuth qjson

Qt SDK

signal & slot

Twitter demo architecture

twitter HTTP

user tap sign in to Twitter

request authorization

access token received show auth page

save access_token to persistent storage

QML C++ (kqOAuth)

let’s see the code

where to go from here

Nokia developer - http://developer.nokia.com/

Qt – http://developer.nokia.com/Develop/Qt/

latest Qt SDK download – http://developer.nokia.com/Develop/Qt/Tools

all about NFC - http://developer.nokia.com/Develop/NFC/

kqOAuth - http://gitorious.org/kqoauth

qjson - http://gitorious.org/qjson