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Pack It Get your app ready for the App Store Sunday, October 9, 2011

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Agenda Hybrid Apps Introducing PhoneGap Using Native APIs Writing Custom PhoneGap Extensions Sunday, October 9, 2011

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Mobile Web Is Broken No Camera No Push Notifications No Filesystem Access No Audio Recording No Contacts Sunday, October 9, 2011

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Mobile Web Is Broken No Camera No Push Notifications No Filesystem Access No Audio Recording No Contacts Sunday, October 9, 2011

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Mobile Web Is Broken No Camera No Push Notifications No Filesystem Access No Audio Recording No Contacts Sunday, October 9, 2011

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Mobile Web Is Broken No Camera No Push Notifications No Filesystem Access No Audio Recording No Contacts Sunday, October 9, 2011

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Mobile Web Is Broken No Camera No Push Notifications No Filesystem Access No Audio Recording No Contacts Sunday, October 9, 2011

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Mobile Web Is Broken No Camera No Push Notifications No Filesystem Access No Audio Recording No Contacts Sunday, October 9, 2011

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Native Apps Are Broken Rewrite same UI code over and over again Solve the same bugs Maintainability nightmare Sunday, October 9, 2011

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Hybrid Apps A native app with an embedded web view Runs mobile web code “in the box” Runs native code “in the frame” Sunday, October 9, 2011

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Hybrid Apps Mobile HTML Native Wrapper Sunday, October 9, 2011

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Hybrid Apps + Most of the app is written once in HTML/JS Native parts are written in platform specific code (Objective C, Java, etc.) Works like a native app - can send to app store Developer controls native code - can use native APIs Sunday, October 9, 2011

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Hybrid Apps - Complex Code Requires many programming languages and data transfer between them Hard to debug Sunday, October 9, 2011

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Introducing PhoneGap Open Source “connecting” solution from mobile web to native Exports native APIs to JS code using plugins Also has an online beta build system Sunday, October 9, 2011

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Selected Apps Runners Ally Taxi Madrid Binary Clock HAL 9000 Tank Inside Trader Radios Roadtripper Sunday, October 9, 2011

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PhoneGap Demo Sunday, October 9, 2011

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PhoneGap Native Build Install the SDK (Android or iPhone) Install PhoneGap lib Compile & Go Sunday, October 9, 2011

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Using The Build Server Have a web app prepare a config.xml file Have an app icon image (png) Register for the beta at: https://build.phonegap.com/start Sunday, October 9, 2011

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Directory Structure / index.html config.xml icon.png assets/ css/ js/ img/ assets dir holds all the files that are accessible from the html It acts as the root of the web page Can use a komodo template Sunday, October 9, 2011

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Config.xml An xml file with all metadata on your app Used by PhoneGap’s build servers Optional but highly recommended Full spec: https://build.phonegap.com/docs/ config-xml Sunday, October 9, 2011

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Config.xml Elements ! PhoneGap: Getting Started ! ! ! A template for getting started with PhoneGap development and build.phonegap.com ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Widget xml root element App Name & Description Platforms for the Build Server Features (for permissions) App Icon Sunday, October 9, 2011

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Manual Build Can also install locally as an addon to eclipse or xcode When used locally, no need for config.xml Can integrate with private native code Some features are still missing from build server Requires native toolchain Sunday, October 9, 2011

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Installing Android SDK Full SDK installation instructions: http://developer.android.com/sdk/installing.html When all is ready, start a new project and follow PhoneGap step-by-step instructions at: https://github.com/phonegap/phonegap/blob/ master/Android/README.md Sunday, October 9, 2011

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Q & A Phonegap Installation & Configuration Sunday, October 9, 2011

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PhoneGap API JavaScript interfaces to native device features All required objects are inserted to the window by phonegap.js No need for native code Sunday, October 9, 2011

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PhoneGap’s APIs Accelerometer Compass Device Geolocation Storage Camera Connection Events Media Capture Contacts File Notification Sunday, October 9, 2011

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PhoneGap’s APIs Accelerometer Compass Device Geolocation Storage Camera Connection Events Media Capture Contacts File Notification Sunday, October 9, 2011

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Device Information var name = device.name var phonegap_version = device.phonegap var os_name = device.platform var os_version = device.version var uuid = device.uuid Demo: examples/phonegap/DeviceInfo Sunday, October 9, 2011

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Notifications navigator.notification.alert(‘foo’); navigator.notification.confirm(‘are you sure ?’, yesCallback, [title], [labels]); navigator.notification.beep(times); navigator.notification.vibrate(ms); Sunday, October 9, 2011

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Notifications iPhone ignores vibrate times PhoneGap implements beeping on the iPhone by playing an audio file. Developer must provide the audio file named beep.wav and placed in the www/ root folder Sunday, October 9, 2011

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Exercise Use PhoneGap to write a native application that shows current device details in a jQM style form Add vibrate and beep buttons Sunday, October 9, 2011

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Contacts Access An API for reading & writing Contacts information contacts.create to add a new contact contact.find to fetch a contact’s information Sunday, October 9, 2011

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Contact Object id displayName name (ContactName) nickname phoneNumbers (ContactField[]) emails (ContactField[]) addresses array ims (ContactField[]) organizations (ContactOrganizations[]) birthday (Date) note (String) photos (ContactField[]) categories (ContactField[]) urls (ContactField[]) Sunday, October 9, 2011

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Contacts Object Not all properties are supported on all device platforms and versions Data type is specified in parens or string Check API docs for full documentation on supported features and platforms Sunday, October 9, 2011

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Address Book Example Show full contact list in a jQM list Exercise: write contact info page Sunday, October 9, 2011

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Adding Contacts Create a contact with contacts.create Modify the contact’s properties Save it to the device’s address book using contact.save Sunday, October 9, 2011

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Q & A Device Notification Contacts Accelerometer Events Camera Sunday, October 9, 2011

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Accelerometer Mobile Movement Detection Sunday, October 9, 2011

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Accelerometer Most mobile devices have accelerometers that detect device motion An accelerometer reports device position using x,y,z coordinate vector Need to register for accelerometer events Sunday, October 9, 2011

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Accelerometer Register for Notifications Handle accelerometer changes Unregister when done Sunday, October 9, 2011

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Accelerometer API watchAccelerometer(success, error, options) clearWatch(watchId) API Doc: http://docs.phonegap.com/ phonegap_accelerometer_accelerometer.md.html Sunday, October 9, 2011

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Demo examples/phonegap/ Bouncers Sunday, October 9, 2011

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Accelerometer Takeaways accelerometer measures acceleration. That is measured in m/ s2 Imagine a ball inside your phone. Now measure that ball’s acceleration when the phone moves Sunday, October 9, 2011

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Exercise Use accelerometer API to write a “shake” detector App should display a red box in the center When user shakes the phone, box changes color to blue Bonus: Have the box shade correspond to the shaking power (stronger shake means darker color) Sunday, October 9, 2011

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Q & A Accelerometer Sunday, October 9, 2011

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PhoneGap Events PhoneGap triggers events when things happen on the device We already know the “deviceready” event Handling events is performed using event listeners in the DOM Events are triggered on the document object Sunday, October 9, 2011

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PhoneGap Events Write a handler function Bind an Event Handler using: document.addEventListener(‘eventname’, handler, false); Can also bind using jQuery Sunday, October 9, 2011

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PhoneGap Events backbutton deviceready menubutton pause resume searchbutton online offline Sunday, October 9, 2011

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BackButton Event Android devices have a back button Default behavior - go back one page. Tapping back on the first page leaves the app Implement event to override Sunday, October 9, 2011

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Menu Button Menus are not enabled in phonegap by default Users expect menu button to show them extra options. This can now be performed A footer with buttons or any other menu layout will work here Still cannot use platform menus Sunday, October 9, 2011

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Pause/Resume Events Android & iOS platforms can send an app to the background if something more important happens No JS will run after a pause. This is your last chance to save data or report back to server App will resume on a ‘resume’ event Sunday, October 9, 2011

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online/offline events When device gets connected to the internet, phonegap sends an online event When device gets disconnected, phonegap sends an offline event Use these to control behavior of network related apps Sunday, October 9, 2011

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CAMERA API TAKE AND SHARE PHOTOS Sunday, October 9, 2011

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Camera API Takes a picture using the device camera Can also request for a saved image (from photo gallery) iPhone: use built in photo edit dialog for cropping Sunday, October 9, 2011

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Camera API options = { quality : 75, destinationType : Camera.DestinationType.DATA_URL, sourceType : Camera.PictureSourceType.CAMERA, allowEdit : true, encodingType : Camera.EncodingType.JPEG, targetWidth : 100, targetHeight : 100 }; navigator.camera.getPicture(success, error, options); Sunday, October 9, 2011

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Quality is ranged 0..100 Destination type selects between DATA_URL and FILE_URI PictureSourceType selects between PHOTOLIBRARY, CAMERA, SAVEDPHOTOALBUM Camera API Sunday, October 9, 2011

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Use The Image - Data function onSuccess(imageData) { var img = document.querySelector(‘#img’); img.src = “data:image/jpeg;base64,” + imageData } function onFail(msg) { alert(‘fail because: ‘ + msg); } Sunday, October 9, 2011

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Use The Image - File function onSuccess(imageURI) { var img = document.querySelector(‘#img’); img.src = imageURI; } function onFail(msg) { alert(‘fail because: ‘ + msg); } Sunday, October 9, 2011

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Camera Tips Use FILE_URI destination type to save on device memory Use DATA_URL to post the data remotely Sunday, October 9, 2011

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Camera API - Missing Check if device actually has a camera (consider iPod touch/iPads) Use image overlay Sunday, October 9, 2011

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Exercise Write a connection indicator app App has a big circle in the middle Circle color is red when offline, and green when online Tapping the circle when it’s green takes a picture, and use it as a background image. Tapping the circle when it’s red takes a picture from the gallery and use it as a background image Sunday, October 9, 2011

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PhoneGap Plugins Each API we examined is just native code “connected” to JS, and bridged by PhoneGap Extending PhoneGap is easy by writing dedicated plugins in native Java or Objective C code A plugin can perform any native task Sunday, October 9, 2011

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Q & A Sunday, October 9, 2011

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Thank You Ynon Perek [email protected] ynonperek.com Sunday, October 9, 2011