Android: how to load pdf within app? - android

I have:
First goal: figure out how to load a PDF from the internet and display it whithin my app
Second (maybe more complex) goal: download a pdf and display OFFLINE within my app
I looked for some solution on stackoverflow and on the Internet but I can't figure out how to implement it
For example I found Mupdf and the source code of some PDF viewer for Android but I'm quite confused: why is so difficult to display a "simple PDF"? Is there any Java library that will do it without incorporate external source code etc.?
Any suggestion is really appreciated.
Thanks in advance!

There are some libraries and sdk.
This might help you
http://www.qoppa.com/android/pdfsdk/
http://code.google.com/p/droidreader/

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This is reference link for the app:
https://play.google.com/store/apps/details?id=com.winjit.hclite&hl=en
Getting the text of a pdf is a hard task in android. You can check this other similar questions to this topic which all have no straight forward answer: Link, Link, Link.
If you cant workaround this there are commercial libarys out there which you can find pretty easy with your search engine of choice (I don't want to promote them here).

How to read, display, open pdf file in android

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You have a very good library (AndroidPdfViewer) for API 11+ that can open, zoom and have animations.
It's simple to use just read the .readme file.
It's based on PdfiumAndroid for decoding the pdf.
You should have a url to access that document . You can use HttpURLConnection class and read subsequent bytes through it . Here is a nice example android download a file

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I have downloaded a PDF viewer library. It opens properly but am not sure whether it is possible to hide words in that document.
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Thanks in advance.
May be you are using muPDF Library and seriously muPDF or other libraries which renders PDF uses Images for rendering data they are not in text format so the modifications you want will be pretty hard to do so.
You may use iText Library for this, itext Library can extract the text from PDF and then you show the text as you want.

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I'm working in an app, and I need which the app can generate a PDF file with the app data saved in XML's.
I need make this in one of two ways, but I don't know how, the ways are:
Generate a PDF from a existing HTML
Edit an existing PDF and add text.
I don't know how iText or droidText can help me.
Any suggestion?
How about having a look at this StackOverflow post?
Android - how to convert html to pdf?
I'm guessing your question requires a similar, if not exactly identical approach.
(By the way, performing a Google search on "generate PDF from HTML android" yielded 305,000,000 other results, many of which seem legitimate answers on your question...)

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I want to show pdf file in android, but this must work without Internet connection and other appliacation. Can I show pdf file in webView or other view?
Yes you can show your PDF to your custom view. For, this you've to use one External Jar file for that. I've already answered like similar to your question. Just check it out.
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Using another app to display your PDFs is a really nice way to do it. Unless you have superiors forcing you to avoid other apps, I'd do it that way. There are good, free pdf viewing apps available so it won't cost your users anything.
The transition when opening a pdf in another app is pretty seamless and it's not always obvious that another app is being used.
The alternative, as SpK said, is to use a jar and write the extra pdf viewing functionality that you need. This is a much harder way to do it.

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