December 2013
Intermediate to advanced
752 pages
16h
Chinese
Content preview from MOBILE WEB程式設計--第二版
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第二章
• 寬螢幕 16:9，用於標準的高清晰度電視。
• 寬螢幕 15:9，用於桌上型 LCD 電腦螢幕。
• 歐規寬螢幕 5:3，用於超級 16 mm 底片。
手機的特性會影響長寬比，你會發現下列的項目：
• 具有縱向（較高）與橫向（較寬）模式的手機與平板。
• 螢幕的寬度比高度還長的手機，如大部分 BB10 之前的 BlackBerry 智慧型手機。
• 螢幕的高度比寬度還長的手機，而且沒有旋轉機制，如大部分的功能型手機。
你可能會認為大部分的行動設備都應該有一個寬螢幕，因為它們都是「現代」的機器，
但還是要先確認一下，例如，市面上的每一個 iPad 都使用標準的 4:3 長寬比，iPhone 4S
則是 3:2。
寬螢幕的 PC 螢幕曾經使用 16:10，但從 2008 年開始，HD TV 標準開始
推廣 16:9 長寬比。但是在平板的世界，我們可以看到 16:10 與 16:9 兩種
寬螢幕平板，以及 15:9 與 4:3 的產品。
輸入方法
現在的行動設備有許多不同的輸入方式，它們已經改變行動 Web App 的開發方式。單一
設備可能只支援一種輸入方法，也可能有許多輸入方式。輸入的方法包括：
• 數字鍵盤。
• 英文字母鍵盤（ABC 或 QWERTY）。
• 螢幕上的虛擬鍵盤。
• 觸控。
• 多點觸控。
• 外接鍵盤（無線或有線）。
• 手寫辨識。
• 語音辨識。
瞭解行動 Web
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當然它們有各種的組合，例如觸控設備可能會有螢幕鍵盤，也可能有完整的 QWERTY ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.