使用Phonegap将base64字符串作为pdf写入电话存储

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.

Answer 1

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")

Answer 2

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