????說來有點令人難以置信：Facebook竟然花了一年半時間才推出官方iPad應(yīng)用程序，而從去年起，可靠的Facebook非官方應(yīng)用客戶端Friendly for Facebook就已經(jīng)開始流行。據(jù)稱，官方應(yīng)用的開發(fā)工作幾度延誤，有一個內(nèi)部測試版還出現(xiàn)過外泄。不過直到今天，F(xiàn)acebook的8億活躍用戶才終于可以開始下載這款程序。

????它的性能到底如何？我們來對它做個快速測評，看看它到底是無與倫比的杰作，還是令人失望的敗筆。

????拜蘋果公司（Apple）的iTunes所賜，下載這個程序簡單方便，但是一開始運行起來就不是這回事了。剛發(fā)布的這一版中存在漏洞，導(dǎo)致我們的“新聞訂閱”服務(wù)（News Feed）每兩三秒就自動重啟一次，而重啟也無濟(jì)于事。還有人稱，下載所需時間很長，或者干脆出現(xiàn)程序崩潰（Facebook建議碰到這種問題的用戶重裝程序）?？蛻舳瞬粩喑霈F(xiàn)的重啟問題致使“新聞訂閱”，乃至整個程序都無法使用，直到第二天程序更新后才解決了這一問題。

????登錄界面似乎經(jīng)過優(yōu)化，可供多賬戶使用，完成登錄后，就轉(zhuǎn)到了主界面屏幕上，所有可選功能項都列在左側(cè)一欄，比如：“新聞訂閱”，群組，應(yīng)用程序，賬戶設(shè)定及其他應(yīng)用。選擇“新聞訂閱”，它就立刻出現(xiàn)在屏幕右方；點擊左側(cè)，它就會以全屏模式顯示。一條細(xì)長的，類似于Facebook桌面網(wǎng)絡(luò)體驗的藍(lán)色工具欄以及最近更新的iPhone應(yīng)用程序始終顯示在屏幕頂端；屏幕上還有一個Home鍵以及通知、消息即好友請求等圖標(biāo)。

????新界面算不上眩目，但簡潔干凈，非常好用。智能手機(jī)的Facebook應(yīng)用程序會突出短信文本，以便用戶能持續(xù)發(fā)送，而iPad版的Facebook應(yīng)用程序則充分利用了平板電腦較大的屏幕，可以賞心悅目地展示圖片和視頻。

????用戶可以選擇好友標(biāo)簽，親眼看看兩者的不同效果。在iOS版本中，F(xiàn)acebook可滾動顯示的好友列表以顯示好友的名字為主，名字邊上的好友頭像尺寸很小，有時候甚至難以分辨。而在iPad上，好友頭像則會彈出，輕松放大9倍，因此用戶會首先看到頭像，然后才會留意名字。因此，用戶更有可能在這個界面上多逗留一會，端詳好友的頭像，而在手機(jī)上進(jìn)行類似操作時，就不會這么留意頭像了。

????在iPad上瀏覽相冊也更有樂趣。搓擦條（scrubber bar）能讓用戶快速瀏覽幾十張照片。用戶還可以選中某一相冊中的某張照片，捏住將其放大，或是返回查看所有照片。

????It's hard to believe that it took Facebook a year-and-a-half to release its own iPad app, given that solid third-party alternatives like Friendly for Facebook have been available since last year. The app had reportedly been delayed several times and a build even leaked. Yet only now are the social network's 800 million active users able to download it.

????So how is it? We gave the app a quick to spin to find out whether it was the one to rule them all, or just a disappointment.

????Downloading the app was simple thanks to Apple's (AAPL) iTunes, though initially getting it to run wasn't. A bug in the first release caused our News Feed to constantly refresh itself every two or three seconds whether we wanted it to or not, and restarting didn't help. Others have reported issues like long loading times or crashes. (For them, Facebook recommends that they reinstall the app.) The constant refreshing on our end rendered the News Feed, and really the whole app, unusable until a software update the next day fixed the problem.

????Once you're past the log-in, a screen seemingly optimized for multiple accounts, you're shuttled over to a home screen that presents all your selectable options in a left-hand column: News Feed, Messages, Groups, Apps, account settings and so on. Select the News Feed, and it appears instantly on on the right-hand side; swipe to your left, and it'll occupy the entire screen. A slim blue bar resembling Facebook's desktop web experience and the recently-updated iPhone app remains up top the entire time, with a home button and icons for notifications, messages and friend requests.

????The new look isn't very flashy, but it's clean and works extremely well. Where the smartphone apps emphasize text for on-the-go consumption, the iPad app leverages the iPad's larger screen and highlights photos and videos beautifully.

????Select the friends tab, and you'll see for yourself. In the iOS version, that scrollable list of Facebook friends is dominated by friends' names alongside tiny, sometimes inscrutable, profile images. On the iPad, those images have been blown out to easily nine times the size, so your eyes gravitate to the images first, and the names second. Hence, you're more likely to linger and glance at profile photos you probably wouldn't have cared as much about if you were doing the same thing on your phone.

????Wading through photo albums is also generally more fun on the iPad. There's a scrubber bar that lets you quickly skim through tens of images. You can also pinch to zoom in as well as to jump back to all the images in a given album.