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Toshiro Shimura

iPhoneサイトを構築しよう--第1回:iPhoneサイト構築で知っておきたい5項目 - page2 - builder by ZDNet Japan - 0 views

  • 先日発売されたiPod touchには、iPhone同様、ブラウザにSafari 3が採用された。そのため、先頃アップルが公開したドキュメントを参考にして、iPod touch向けにモバイルコンテンツを配信することが可能だ。本稿ではiPhoneサイト構築にあたり、知っておきたい5つのTipsを紹介する。
  • 1. タブブラウジング  iPhone、iPod touchでは厳密には「タブ」ではないが、複数のWebサイトを同時に開いてのブラウジングが可能だ。様々なページを見比べたり参照しながらブラウジングすることがストレスなく行える。利用者にとって便利といえるが、特定のページに居座るという可能性は低くなる。モバイルコンテンツには元々そういった部分はあったが、マルチタスクはさらにそれを加速させるだろう。
  • 2. 柔軟なサイトデザインの実現  他のブラウザではサポートしきれていないCSS 2.1および一部のCSS3がSafariでは利用できるのも、マークアップエンジニアの心を揺さぶる部分だ。  CSSといえばWebサイトのレイアウトを組むときや装飾に役立つというイメージがあるが、iPhone/iPod touchではそれ以上の役割を果たしている。一部の携帯電話で利用可能なOperaにも実装されているが、SafariではCSS3のメディアクエリ(Media Queries)が利用できる。  メディアクエリを利用すれば、デバイス、スクリーンサイズ、色に応じて異なるスタイルをページに継承させることが可能だ。パソコンで閲覧できるページをそのまま見られるのが強みではあるが、可能な限りストレスのない体験を提供したいところだ。その際、わざわざ専用ページを設けるのではなく、メディアクエリを利用してオールインワンソリューションを提供することができる。(注釈2) 注釈2 <link media="only screen and (max-device-width: 480px)" href="iphone.css" type="text/css" rel="stylesheet" />  メディアクエリはCSSファイル内に書き込むことが可能だが、上記のようにHTMLのlinkタグ内に記述することもできる。iPhone/iPod touchは横に傾けた際の幅が480pxなので、スクリーンサイズが最大480px(max-device-width: 480px)を想定したCSSファイルを用意しておくと良いだろう。
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  • 3. JavaScriptを利用したWebアプリケーション開発  CSS3と同様、Safariでは高いレベルでJavaScriptのサポートを実現している。詳しくはアップルが公開している「Web Kit DOMプログラミングトピックの紹介」を参照して欲しいが、様々なアニメーション効果やAjaxを利用することができるのだ。メディアクエリーを利用して最適化したサイトデザインを提供することができるが、JavaScriptを組み合わせてデバイスを回転したときに異なるレイアウトを提供するといったことも難しくない。  今までのWebサイト開発で慣れ親しんでいたJavaScriptをそのまま使っても動作するが、注意も必要だ。Safariは早いJavaScriptレンダリングを売りにしているものの、パソコン上で起動しているSafariに比べると大幅に遅くなる。iPhoneとMacBookを対象にしたレンダリングスピードのテストがブログ「John Murch the Self Proclaimed Geek Guru」で公開されているが、CPUの影響かiPhoneのほうが遅いのが分かる。パソコンと同等のJavaScriptが利用できるが、iPhone向けにJavaScriptを最適化するか、利用するJavaScriptの量を削る努力は惜しまないほうが良いだろう。(注釈3)
thanaads Thanaads Noo

iWow Adapter, Sound-Enhancer for iPhone and iPod Touch | iPhone News Updated - 0 views

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    SRS Labs' recently introduced their iWow Adaptor which attaches to the dock of an iPhone or iPod touch at CES.
thanaads Thanaads Noo

Dynadel releases Beauty 1.0 - Face Analysis for iPhone and iPod Touch | iPhone News Updated - 0 views

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    Dynadel today announced the release of "Beauty" for iPhone and iPod touch. The Dynadel's Beauty application is a simple face analysis tool used to determine how proportional and symmetric a frontal face photo is. Facial symmetry is one of a number of aesthetic traits associated with health, physical attractiveness and beauty of a person. It is also commonly referred as a factor in both interpersonal attraction and interpersonal chemistry.
thanaads Thanaads Noo

New Jailbreaking Tool Available for Some iPhone Users | iPhone News Updated - 0 views

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    The iPhone hacking faithful can now unlock and jailbreak their original iPhone, iPhone 3G, and iPod Touch 1G devices with the much-awaited PwnageTool 3.1. Unfortunately, the hacking tool does not yet support the iPhone 3GS or the new iPod Touch, but an update is expected soon.
thanaads Thanaads Noo

Apple's Halloween Treat Feels Like a Trick | iPhone News Updated - 2 views

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    With the way Apple's been making money these days, I wouldn't have been surprised to hear they were giving out real iPods to any trick-or-treaters visiting their stores yesterday. They weren't, of course, but the alternative was pretty cute.
thanaads Thanaads Noo

iPad's Lasting Impact? A Mixed Bag | iPhone News Updated - 0 views

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    What will be the lasting impact of Apple's iPad? Some argue the iPad will do for tablet computing what Apple's iPod did for digital music and MP3 players. Is this a good or bad thing? Apple's big reveal Thursday, complete with independent iPad reviews and the debut of thousands of iPad apps, has only fueled the sport of Apple musing on this topic.
thanaads Thanaads Noo

Easter Bunny Tracker for iPad, iPhone, and iPod Touch | iPhone News Updated - 0 views

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    Although NORAD has a Santa Tracker for Christmas, unfortunately it doesn't have a device to track the travels of the Easter Bunny. Not to worry, however, since Apple has created an application that follows the Bunny's every move leading up to Easter.
thanaads Thanaads Noo

Apple's iPhone and iPod Monopolies Must Go | iPhone News Updated - 0 views

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    With a year and 1.5 billion downloads under its belt, maybe its time for Apple's App Store - and Music Store - to get some competition. Whether Apple likes it or not.
thanaads Thanaads Noo

If an iPhone Falls in the Forest | iPhone News Updated - 0 views

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    iPhactory says its iPhorest app for iPhone and iPod touch, now on the Apple App Store, is an environmentally conscious app.
thanaads Thanaads Noo

Apple shares rise as tablet anticipation builds | iPhone News Updated - 0 views

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    Shares of Apple Inc reached their all-time high on Thursday, as excitement builds over the expected release of its tablet computer.
thanaads Thanaads Noo

Find Your Lost iPhone With An iPhone App | iPhone News Updated - 0 views

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    Apple introduced on Friday a free iPhone and iPad app that lets you locate a lost or stolen iPhone, at a cost - you will need to have an Apple MobileMe subscription that runs at $99 per year.
thanaads Thanaads Noo

App Store: 15,000 apps and 500m downloads | All Apple News - 0 views

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    Apple Inc. is celebrating a huge App Store milestone: 500 million downloads, and over 15,000 apps in the store.
thanaads Thanaads Noo

Apple Dominates Product Searches Online | iPhone News Updated - 0 views

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    The Apple iPhone is currently the most searched for product in the UK, picking up 1.75 percent of all product searches and 14.01 percent of all mobile phone searches during the week ending December 5.
thanaads Thanaads Noo

iPad 'No Tablet,' Says Ex-Apple Exec | iPhone News Updated - 1 views

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    The iPad is too big and lacks communication capabilities, argued the former Apple executive who oversaw the demise of the company's iconic-but-flawed Newton more than a decade ago.
thanaads Thanaads Noo

White iPhone 4G Photos Surface | iPhone News Updated - 1 views

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    Taiwanese site Apple.pro has managed to get hold of what it claims is the "next-generation iPhone 4G" in white color and posted the photos online. Before the color gets all you Apple fans excited, let us remind you that these photos are possibly of a fake iPhone model. But, since there's hardly a fortnight to Worldwide Developer Conference 2010 (which kick-starts on June 7), we might as well wait for it just to be sure.
thanaads Thanaads Noo

Apple Sued Over Multitouch | iPhone News Updated - 0 views

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    Heh. Apple, who has so veraciously defended the multi-touch technology on the iPhone, is under attack for patent infringement by Taiwanese Elan Microelectronics.
thanaads Thanaads Noo

Banned by Apple: 9 iPhone App Rejects | iPhone News Updated - 0 views

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    Apple likes to boast that there's an app for almost anything. But it still works mighty hard to make sure there isn't an app for absolutely everything.
Adam Mills

Recession proof: Apple reports best non-holiday quarter ever - 0 views

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    Apple released their third quarter earnings today and needless to say, especially because of the recession, their numbers are incredible.
thanaads Thanaads Noo

Apple to release iPhone OS 3.0 update today | iPhone News Updated - 0 views

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    Apple is scheduled to release its iPhone OS 3.0 software update today-according to industry rumors, the update will be available for download at 1:00 pm EST.
thanaads Thanaads Noo

Apple Tablet Most-Watched Product of 2010, But By Whom? | iPhone News Updated - 1 views

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    There is no question that PC pundits are eagerly awaiting Apple's supposed new tablet, but what about customers? This is a high-risk game and Apple must know it.
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