Converting the Bitmap to Base64 encodeded text

[mohitt]

Hi Andrew,

I tried converting the Bitmap being captured to Base64 Encoded string using the following code

ByteArrayOutputStream baos = new ByteArrayOutputStream();
signatureView.getImage().compress(Bitmap.CompressFormat.JPEG, 10, baos);
byte[] imageInByte=baos.toByteArray();
String imgInString = Base64.encodeToString(imageInByte,Base64.NO_WRAP);
Log.d(TAg,imgInString);

But, some how it only shows a part of the image not the complete image, but when I write it to Bitmap as per the demo and read the file again, try printing it on log, it is still has partial image, but if I write it to a text file. and get the content of the text file using DDMS. That seems to have the complete content.

Following is the demo code

        Bitmap image = signatureView.getImage();
        File sd = Environment.getExternalStorageDirectory();
        File fichero = new File(sd, "signature.jpg");
        Log.d(TAg, sd.getAbsolutePath());
        try {
            if (sd.canWrite()) {
                fichero.createNewFile();
                OutputStream os = new FileOutputStream(fichero);
                image.compress(Bitmap.CompressFormat.JPEG, 10, os);
                os.close();
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        if (sd.canRead()) {
            if (fichero.canRead()) {
                Bitmap img = BitmapFactory.decodeFile(fichero.getAbsolutePath());
                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                img.compress(Bitmap.CompressFormat.JPEG, 10, baos);
                byte[] imageInByte = baos.toByteArray();
                String imgInString = Base64.encodeToString(imageInByte, Base64.NO_WRAP);
                Log.d(TAg, imgInString);
                File txtFile = new File(sd, "textEncoded.txt");
                if (txtFile.exists())
                    txtFile.delete();
                try {
                    txtFile.createNewFile();
                } catch (IOException e) {
                    e.printStackTrace();
                }

                try {
                    //BufferedWriter for performance, true to set append to file flag
                    BufferedWriter buf = new BufferedWriter(new FileWriter(txtFile, true));
                    buf.append(imgInString);
                    buf.newLine();
                    buf.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }

            }
        }

Any Help is greatly appreciated :) , thanks a ton in advance.

Regards Mohit

[CoatedMoose]

Hey, sorry for taking so long to respond to this issue. You created the issue when I was crazy busy at work, and then I didn't remember to come back to this.

Have you had any luck with this issue?

If I understand you correctly, you are trying to copy the string provided by logcat out to a file. LogCat has a cap on the line length of what can be written out (a few hundred characters I think, but still easily fewer characters than bytes of image). Would this explain the behaviour you are seeing?

[Devang-Targetint]

Hi Andrew,

Thanks for reply. And about the LogCat behaviour, you are right ...

[CoatedMoose]

It sounds like this is solved. Feel free to reopen if not.

[Devang-Targetint]

Sure .... Thanks