iPhone Dev Camp Keynote

July 7th, 2007 The iPhone: What We Know, What We Don’t Know Christopher Allen 1

Christopher Allen 2

The iPhone: What we Know 3

The iPhone: What We Know Essential Reading <http://developer.apple.com/iphone/> 4

The iPhone: What We Know Essential Reading <http://www.iPhoneWebDev.com/> 5

The iPhone: What We Know Use Web Standards 6

The iPhone: What We Know Use Web Standards HTML 4.01 XHTML 1.0 CSS 2.1 and partial CSS 3.xx JavaScript 1.4, including DOM support AJAX technologies, including XMLHTTPRequest PDF Quicktime 7

The iPhone: What We Know Things to Avoid Flash SVG Java applets Plug-in installation Embedded Video Custom x.509 certiﬁcates 8

The iPhone: What We Know Follow Web Best Practices Separate HTML, CSS and Javascript Use well-structured and valid HTML Use columns and blocks no wide columns or text across page Avoid framesets Use CSS or iframes Size graphic elements appropriately don’t rely on browser scaling! Use small background images tile the pieces Don’t send unneeded data no 50K javascript where 10% is used 9

The iPhone: What We Know The Finger is Not a Mouse Fingers are bigger and blunter Links and buttons need to be larger Select 80px by 80px, with 20px of free space between 10

The iPhone: What We Know The Finger is Not a Mouse Fingers are bigger and blunter Links and buttons need to be larger Select 80px by 80px, with 20px of free space between Fingers can do more... Double tap Zoom in and center a block Touch and hold Display an information bubble One or Two-ﬁnder Drag Move the viewport or pan Flick Scroll up or down Pinch Zoom in or out 11

The iPhone: What We Know Design for Size 12

The iPhone: What We Know Be careful during user input 13

The iPhone: What We Know Use Columns 14

The iPhone: What We Know Use Small Blocks 15

The iPhone: What We Know Orientation a Problem 16

The iPhone: What We Know NY Times Portrait 17

The iPhone: What We Know NY Times Landscape 18

The iPhone: What We Know Viewports, not Windows 19

The iPhone: What We Know Viewports not Windows Use <meta Meta Tag name=\"viewport\"/> defaults to width=\"480\" may look good on NY Times, but probably not on your site simple (twice portrait) width=\"640\" native portrait width=\"320\"; initial-scale=”1.0”; maximum-scale=”1.0”; minimum- scale=”1.0”; user-scalable=”false” useful width=\"480\"; maximum-scale=”0.6667”; your mileage may vary—try, try again! 20

The iPhone: What We Know <body style=\"-webkit-text-size-adjust:none\"> <body style=\"-webkit-text-size-adjust:auto\"> <div style=\"-webkit-text-size-adjust:200%\"> 21

The iPhone: What We Know Use tel:, mailto: & maps.google.com/maps? 22

The iPhone: What We Know PDF works 23

The iPhone: What We Know H.264 with AAC 24

The iPhone: What We Know Use Reference Movies 25

The iPhone: What We Know Identifying the iPhone Use CSS if possible iPhone <link media=\"only screen and (max-device-width: 480px)\" href=\"iPhone.css\" type=\"text/css\" rel=\"stylesheet\" /> not-iPhone <link media=\"screen\" href=\"fancy.css\" type=\"text/css\" rel=\"stylesheet\" /> bug: apple suggested doesn’t work on IE - workaround in progress Use user-agent only as need if(navigator.userAgent.indexOf ('iPhone') != -1) 26

The iPhone: What We Know Working events window.onload formfield.onfocus formfield.onclick formfield.onblur formfield.onchange formfield.onmouseout formfield.onmouseover formfield.onmousedown * formfield.onmouseup form.onreset * triggered but not as expected Others of these may work oddly! 27

The iPhone: What We Know Non-functional events window.oncontextmenu window.onresize * (partial, buggy) window.onscroll window.onerror formfield.ondblclick formfield.onselect formfield.onkeydown formfield.onkeypress formfield.onkeyup form.onsubmit formfield.onmouseenter formfield.onmouseleave formfield.onmousemove document.onkeydown document.onkeypress document.onkeyup 28

The iPhone: What We Know Be aware, also no... window.showModalDialog() hover styles tool tips mousedown, instead happens right before mouseup 29

The iPhone: What We Know Limit sizes HTML, CSS, Javascript <10MB don’t send unneeded Javascript Javascript execution <5 sec GIF, PNG, and TIFF up to 8 MB i.e width * height * 4 < 8 MB Animated GIF <2MB or only ﬁrst frame shown JPG up to 128MB will be subsampled internally Non-streamed media <10MB 30

The iPhone: What we’ve Learned 31

The iPhone: What We’ve Learned Examples <http://www.iPhoneWebDev.com/examples/> 32

The iPhone: What We’ve Learned Examples viewport samples view source bookmarklet selecting di!erent keypads changing CSS on orientation change hiding the URL bar onload mailto: with arguments iPhone user-agent detection event testing 33

The iPhone: What We’ve Learned Exemplars gasapp.com Joe Hewitt’s navigation demo movie.app (in 5 hours o! of nav) telemoose tada lists Soon to be Exemplars iPhone dragging 34

The iPhone: What We’ve Learned Bugs & Workarounds viewportwindow.pageYO!set always 0 no workaround window.resize event irregular but there is hack around based on width second text entry fails to invoke keyboard hack using javascript tel: tags do not conform to RFC for p and w characters use non-conforming comma , bare images in safari render on 980px use new page 35

The iPhone: What We’ve Learned Discussions Four kinds of iPhone web pages compatible, friendly, optimized, and web app Standard for an iPhone friendly icon for directory apps What qualities does an exemplar iPhone web app have? Two ﬁnger scrolling Development libraries Sound in iPhone web games Implementing the back button Type faces, type sizes Debugging javascript, FireBug Alpha/Beta testing new web apps 36

The iPhone: What We’ve Learned Examples <http://www.iPhoneWebDev/examples.com/> 37

The iPhone: What we Don’t Know 38

The iPhone: What We Don’t Know Open Questions <http://barcamp.org/iPhoneDevCampOpenQuestions> 39

The iPhone: What We Don’t Know Open Questions What is the list CSS3 and how should we use it? What Canvas support is available and how much can we do? How do we get the URL input panel? Are background pages executing? Do we know when the browser is interrupted by phone call? How do we get/set scaling ratio? A CSS3 media query that doesn’t break IE? Persistent storage - can we rely on cookies? Any Google Gears? 40

The iPhone: What We Don’t Know Open Questions (continued) Without many events, how do we make ui widgets How do we make two-ﬁnger scrolling widgets How to do animations faster size, direction, tricks? What does iSafari do when... opening .lnk, .web archives What does mail do when... receiving .vcf (vCard), .m3u, .url .lnk or .web archives How best to use PDF and .doc OpenID for iPhone? 41

The iPhone: What We Don’t Know Open Questions <http://barcamp.org/iPhoneDevCampOpenQuestions> 42

iPhoneDevCamp Hack-a-Thon 43

iPhone DevCamp Hack-a-Thon MacHack (b:1985 d:2003) 44

iPhoneDevCamp Hack-a-thon Values Contribution assisting the commons o!ering value usefuless Sharing helping others source code available Openness good questions open to people and ideas free or open source Fun & Cool! but we value simplicity & elegance 45

iPhoneDevCamp Hack-a-thon We may give out tickets or smaller prizes for... best question on Open Questions best answer on Open Questions travelled furthest most useless hack best looking worst looking best docs most fun 46

iPhoneDevCamp Hack-a-thon Diverse Teams Client coders (javascript) Server coders (PHP, Perl, Ruby, etc.) CSS/DHTML Artists User Interface/Experience Testing Documentation Hardware 47

iPhone DevCamp Hack-a-Thon Signup by 1pm Sunday <http://barcamp.pbwiki.com/ iPhoneDevCampHackAThon> 48

iPhone DevCamp Hack-a-Thon 5 minutes! 49

iPhone DevCamp Hack-a-Thon x2 x3 Hack-a-Thon Demo & Contest, Sunday 2pm-5pm 50

<mailto:ChristopherA@iPhoneWebDev.com> 51

iPhone Dev Camp Keynote

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