ipad iphone開發_如何在iPhone或iPad上閱讀PDF文件

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PDFs are something of a necessary evil. Sure, they’re a handy way to preserve any document in the style you intended, and can be read on virtually any device…but if your device doesn’t have a good built-in PDF reader, finding one can be a pain.

PDF是必不可少的。 當然，它們是一種方便的方式來保存您想要的樣式的任何文檔，並且幾乎可以在任何設備上閱讀…但是，如果您的設備沒有內置的良好PDF閱讀器，那麼找到一個可能會很麻煩。

It’s no different on an iPhone or iPad. The default method to read PDF files on these devices is using iBooks, which was included as a preloaded app beginning with iOS 8. Sure, you can view PDFs in Safari, but you won’t have very many additional options. And while iBooks is sufficient and has some nice features, there are other apps that make reading PDFs downright luxurious, and these can all be downloaded from the App Store.

在iPhone或iPad上沒有什麼不同。 在這些設備上閱讀PDF文件的默認方法是使用iBooks，它是從iOS 8開始作爲預加載的應用程序提供的。當然，您可以在Safari中查看PDF，但是您沒有太多其他選擇。 儘管iBooks足夠了並且具有一些不錯的功能，但是還有其他一些應用程序可以使閱讀PDF變得非常豪華，這些都可以從App Store下載。

使用iBooks代替Safari進行基本閱讀 (Use iBooks Instead of Safari for Basic Reading)

When you open a PDF file in Safari, you can read it like other web content, but you also have the option to open it in iBooks, which will appear in the upper-right corner of the page. If you have other PDF readers installed, then you could tap 「Open in…」 instead.

在Safari中打開PDF文件時，您可以像閱讀其他Web內容一樣閱讀它，但也可以選擇在iBooks中打開它，該文件將顯示在頁面的右上角。 如果您安裝了其他PDF閱讀器，則可以點擊「在...中打開」。

Reading PDFs in iBooks provides three main features. First, you can adjust the brightness.

在iBooks中閱讀PDF具有三個主要功能。 首先，您可以調節亮度。

If you tap the magnifying glass icon, you can search for any word or page number.

如果點擊放大鏡圖標，則可以搜索任何單詞或頁碼。

Finally, if you want to mark your place in a document or save a particularly interesting location, you can tap the bookmark feature.

最後，如果您想在文檔中標記位置或保存特別有趣的位置，則可以點擊書籤功能。

If you tap the icon with the three lines in the upper-left corner, you’ll see all the pages in the document including the ones you have bookmarked.

如果點擊左上角的三行圖標，您將看到文檔中的所有頁面，包括已添加書籤的頁面。

Here you see what we mean by this, note, if you wanted to see just the pages you’ve bookmarked, you could just tap the bookmark icon.

注意，在這裏您可以看到我們的意思，請注意，如果您只想查看已添加書籤的頁面，則只需點擊書籤圖標即可。

iBooks is great for basic PDF reading. It has enough rudimentary features to make it a lot better than Safari. Still, if you want something with more advanced features, such as text-to-speech or markup capabilities, then you will want to look to other options.

iBooks非常適合基本的PDF閱讀。 它具有足夠的基本功能，使其比Safari更好。 不過，如果您想要具有更高級功能(例如文本到語音或標記功能)的東西，那麼您將需要尋找其他選項。

如果喜歡功能，請使用Foxit (Use Foxit if You Like Features)

One such option (and probably the best) is Foxit Reader, available in the App Store for free. Foxit is a full-featured PDF reader that puts iBooks to shame.

福昕閱讀器是其中一種(也許是最好的)選擇，可在App Store中免費獲得。 福昕(Foxit)是功能齊全的PDF閱讀器，它使iBooks蒙羞。

Aside from giving you the ability to change brightness and search for text, Foxit also has a wide range of view modes.

除了爲您提供更改亮度和搜索文本的功能外，Foxit還具有多種查看模式。

Best of all, many of these views can be used together. For example, in the following screenshot, we’ve enable night mode, crop mode, and shown the document as one continuous page.

最好的是，其中許多視圖可以一起使用。 例如，在以下屏幕截圖中，我們啓用了夜間模式，裁剪模式，並將文檔顯示爲連續的一頁。

One of the best features found in FoxIt, however, is the text-to-speech feature. Simply tap on the speaker icon, and FoxIt will read the document to you. This could go a long way towards helping you be more productive. Say for example you boss sends you a long document he or she wants you to go over. You could then just have Foxit read it to you in the car ride home.

但是，FoxIt中最好的功能之一就是文本到語音功能。 只需點擊揚聲器圖標，FoxIt就會爲您閱讀文檔。 這可能有助於您提高工作效率。 舉例來說，您的老闆給您發送了一份長文件，他或她希望您過去。 然後，您可以在駕車回家時讓福昕閱讀給您看。

You can also read pages as a single column rather than having to pinch to zoom, which is another killer feature. When you tap the button shown in the following screenshot, the entire document will zoom to a single column making it far easier to read.

您還可以將頁面讀爲單列，而不必進行縮放，這是另一個殺手級功能。 當您點擊以下屏幕快照中顯示的按鈕時，整個文檔將縮放到單個列，使其更易於閱讀。

Then, tap the options at the bottom of the viewer to enlarge or decrease the size of the text as well as advance to the next page or go back to the previous.

然後，點擊查看器底部的選項，以放大或縮小文本的大小以及前進到下一頁或返回上一頁。

Finally, there’s markup mode, which will unveil a host of cool options, too many to list here, but for example, you can mark certain parts of a document, highlight passages, and add notes.

最後，還有標記模式，它將顯示許多很酷的選項，在這裏太多了，但例如，您可以標記文檔的某些部分，突出顯示段落並添加註釋。

FoxIt offers additional in-app purchases, most notably the ability to add cloud drive support for some of the most popular services.

FoxIt提供了額外的應用內購買功能，尤其是能夠爲某些最受歡迎的服務添加雲驅動器支持。

There’s much more to Foxit so we urge you to check it out if you’re looking for something chock full of features without charging you a nickel.

福昕(Foxit)還有更多功能，因此，如果您要查找的是功能齊全的產品而又不收取任何費用，我們建議您檢查一下。

使用Adobe Acrobat創建和轉換PDF (Create and Convert PDFs with Adobe Acrobat)

Finally, there’s always the old familiar Adobe Acrobat, which is also available in the App Store for free, but doesn’t have nearly the same feature set as Foxit. That said, it does allow you to create PDFs, export them to other file formats, and convert photos to PDF, which is something you can’t do with iBooks or Foxit, unless you pay for the 「Create PDF for iPhone」 addon.

最後，總是有舊的熟悉的Adobe Acrobat，它也可以在App Store中免費獲得，但功能卻幾乎與Foxit相同。 也就是說，它確實允許您創建PDF，將其導出爲其他文件格式，以及將照片轉換爲PDF，這是iBooks或Foxit無法做到的，除非您爲「爲iPhone創建PDF」附加組件付費。

Acrobat provides the ability to bookmark pages, change the view mode, add text markup, search, and more. The markup features are good, but not as extensive as Foxit’s.

Acrobat提供了對頁面添加書籤，更改視圖模式，添加文本標記，搜索等功能。 標記功能不錯，但不如Foxit廣泛。

You can also open PDFs from the Adobe cloud or you can add your Dropbox account to open and save PDFs located there.

您也可以從Adobe雲中打開PDF，也可以添加Dropbox帳戶來打開並保存其中的PDF。

Acrobat is suitable for users who are looking for something between the feature-rich Foxit and iBooks. You can still add markup and bookmark locations but you won’t have the luxury of text-to-speech or the nice full-screen column view.

Acrobat適合在功能豐富的Foxit和iBooks之間尋找東西的用戶。 您仍然可以添加標記和書籤位置，但是您將無法享受文本到語音轉換或漂亮的全屏列視圖的便利。

However you choose to read PDFs on your iPhone or iPad, whether it’s using Safari, iBooks, Foxit, or Acrobat, the fact is you have options, and in fact, there are even more readers available in the App Store for you to explore. So, if you’re not exactly thrilled with reading PDFs on your iPhone or iPad because of iBook’s limited features, do yourself a favor and check out Foxit Reader or Adobe Acrobat.

但是，無論您是使用Safari，iBooks，Foxit還是Acrobat，都選擇在iPhone或iPad上閱讀PDF，事實是您可以選擇，實際上，App Store中還有更多讀者可以瀏覽。 因此，如果您由於iBook的功能有限而對在iPhone或iPad上閱讀PDF感到不滿意，請幫自己一個忙，並查看Foxit Reader或Adobe Acrobat。

翻譯自: https://www.howtogeek.com/244254/how-to-read-pdf-files-on-your-iphone-or-ipad/

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