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How PhoneGap really works
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Ilya Pukhalski
February 12, 2013
Programming
5
980
How PhoneGap really works
PhoneGap (PhoneGap API's, PhoneGap plugins, PhoneGap Build) from behind
Ilya Pukhalski
February 12, 2013
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Transcript
Ilya Pukhalski, EPAM SEC 2013 PHONEGAP How really works
@witchfinderx 2 Ilya Pukhalski, EPAM Mobile Competency Center
WHAT WILL WE DISCUSS? 3
— That mobile mobile world... — What is PhoneGap? -
A brief history of PhoneGap - How PhoneGap works - PhoneGap APIs - Plugins - Cons and limitations — PhoneGap Build — The future is closer than you think 4
THAT MOBILE MOBILE WORLD... 5
6 June, 2007
7 +
8 July 10, 2008
9 One of the main world problems today
Everything is WEB 10
11 What's in common?
12 All of them have a browser
PHONEGAP 13
PhoneGap is an open source framework that enables to build
cross-platform hybrid mobile applications using web technologies (HTML, CSS, JavaScript). 14
PhoneGap 2.3.0 15
HISTORY OF PHONEGAP 16
iPhoneDevCamp 2008 17 PhoneGap 1.0 2009 Migration to Apache Cordova
2012 IBM get involved into development late 2009 PhoneGap Build official launch late 2012
HOW PHONEGAP WORKS 18
19
20
21
22
None
24
25 PhoneGap Build Process
PHONEGAP API'S 26
27 — Accelerometer — Camera — Compass (excl. iPhone 3/3G,
BlackBerry OS 5+ and Symbian) — Contacts (excl. WebOS) — File (excl. WebOS, Symbian, Bada) — Geolocation — Media (excl. BlackBerry OS 5+, WebOS, Symbian, Bada) — Network — Notification — Storage (excl. Bada)
28
29 API call example `navigator' is a global namespace for
all API calls
HELLO WORLD 30
Including cordova.js
32 Adding listener on "deviceready"event
33 showAlert(); will display a native notification
34 Show notification as soon as device is ready
PLUGINS 35
36
37 HelloWorld.js
38 PhoneGap Bridge exec call
39 PhoneGap Bridge exec call Cordova.exec bridge CDV-HelloWorld.js
40 CLI for plugin boilerplate
41 CLI for plugin boilerplate
42 iOS native code #import <Cordova/CDVPlugin.h> @interface HelloWorld : CDVPlugin
@end #import "HelloWorld.h" @implementation HelloWorld @end HelloWorld.h HelloWorld.m Inheritance
43 Adding methods #import <Cordova/CDVPlugin.h> @interface HelloWorld : CDVPlugin -
(void)add:(CDVInvokedUrlCommand*)command; @end #import "HelloWorld.h" @implementation HelloWorld - (void)add:(CDVInvokedUrlCommand*)command { } @end HelloWorld.h HelloWorld.m Instance method Instance method
44 Retrieving arguments #import "HelloWorld.h" @implementation HelloWorld - (void)add:(CDVInvokedUrlCommand*)command {
double a = [[command.arguments objectAtIndex:0] doubleValue]; double b = [[command.arguments objectAtIndex:1] doubleValue]; double result = a + b; } @end HelloWorld.m Retrieve arguments; Addition.
45 Sending the result #import "HelloWorld.h" @implementation HelloWorld - (void)add:(CDVInvokedUrlCommand*)command
{ double a = [[command.arguments objectAtIndex:0] doubleValue]; double b = [[command.arguments objectAtIndex:1] doubleValue]; double result = a + b; CDVPluginResult* pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK messageAsDouble:result]; [self writeJavascript: [pluginResult toSuccessCallbackString:command.callbackId]]; } @end HelloWorld.m Send result back
46 Adding plugin mapping to Cordova.plist
47 Calling our plugin from JS
CONS & LIMITATIONS 48
— Fast changing inconsistent API — Lacks and inaccuracies in
documentation — Some device specific API's are still unavailable for some OS — Dealing with cross-platform web development issues 49
PHONEGAP BUILD 50
51 PhoneGap Build is a cloud based service built on
the top of PhoneGap framework.
— PhoneGap Build is a cloud service — PhoneGap Build
API can help in establishing CI — No need to have different environment OS and SDK's to build an application 52 PhoneGap Build Pros
THE FUTURE IS CLOSER THAN YOU THINK 53
Some API's are already accessible 54
55 Device Specific API's accessibility: Accelerometer
Device Specific API's accessibility: File API (incl. camera uploads)
Average support is ~70%
58 https://vimeo.com/55486684 Sencha Fastbook
QUESTIONS? 59
@witchfinderx 60
@witchfinderx 60