How to convert Byte Array to PDF file in Android?

Here is one of the way of creating PDF from Byte Array.

File dir = Environment.getExternalStorageDirectory(); File assist = new File("/mnt/sdcard/Sample.pdf"); try { InputStream fis = new FileInputStream(assist); long length = assist.length(); if (length > Integer.MAX_VALUE) { Log.e("MainActivity", "cannnottt readddd"); } byte[] bytes = new byte[(int) length]; int offset = 0; int numRead = 0; while (offset < bytes.length && (numRead = fis.read(bytes, offset, bytes.length - offset)) >= 0) { offset += numRead; } File data = new File(dir, "mydemo.pdf"); OutputStream op = new FileOutputStream(data); op.write(bytes); } catch (Exception ex) { Log.e("MainActivity", "" + ex.getMessage()) } 

Use FileOutputStream and its write(byte[]) method.

_{# Assuming that you have data content which is ready to be writen in PDF.}

There are also some pdf writers api available for android.

See:

• Android pdf writer
• How to create pdf on android

You can use the Common IO library which will help convert simply from file to byte array or from byte array to file.

 File mFile = new File(filePath); FileUtils.writeByteArrayToFile(mFile, yourArray);