Write base64 string as pdf to phone storage using Phonegap

Question

I have requirement to write pdf to phone storage using Phonegap, but phonegap only supports text writting in file. I have base64 string which contains pdf doc, and I want to save it to Phonestorage. I have tried to convert base64 to utf-8 using atob function and then write it to pdf, but it is not also working.

Is there something else that I should try? or is there any plugin available?

Any help would be appreciated.

score 0 · Answer 1 · answered Jun 20 '14 at 11:21

0

Create a normal pdf writer method in java. For the same iText or any other pdf writers can be used. Expose a public method in this writer class as a Javascript Interface. Eg :

Class PdfWriter{

@JavascriptInterface
    public void writeToPdf(String dataToBeWritten) {
        writeToFile(dataToBeWritten);
    }
}

Register this as a JavascriptInterface with the webview.

Once the webview is loaded, you should be able to call:

window.PdfWriter.writeToPdf("data_to_be_written")

answered Jun 20 '14 at 11:21

MIdhun Krishna

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I prefer to write it using Java script only, because I am creating hybrid application – Mohammad Ashfaq Jun 20 '14 at 11:28
Basically you are creating a Cordova Plugin manually with the above approach. From your question it seems you are fine with using a Plugin. You can also try the approach mentioned in [this](http://www.tricedesigns.com/2014/01/08/generating-pdf-inside-of-phonegap-apps/) post – MIdhun Krishna Jun 20 '14 at 11:46

score 0 · Answer 2 · edited May 23 '17 at 12:33

0

The base64 PDF data needs to be converted to a fileblob.

You can then save that fileblob as a PDF file using the cordova-file plugin.

Convert base64 string as pdf in phonegap

edited May 23 '17 at 12:33

Community

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answered Apr 07 '16 at 13:53

Jorn Theunissen

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That's correct, but Blob may not be supported by all the Rendering Engines. – Mohammad Ashfaq Apr 12 '16 at 05:48
The answer in the linked post has been updated. If blob is not supported by the render engine it falls back to the older blobbuilder. – Jorn Theunissen Jul 07 '16 at 15:22

Write base64 string as pdf to phone storage using Phonegap

2 Answers2