Android BitmapFactory returning null on Base64 decoded byte array

Question

I have a server with several photos from 1.5 kb to 9 Mb. The photos from PC, tablets and phones. The sever encode them to Base64 strings and then send them to an Android client. One 300 kb photo return null when decoding in BitmapFactory.decodeByteArray... But it's valid image and good decoded in online decoder.

byte[] decodedString = Base64.decode(image64, Base64.DEFAULT);
Bitmap decodedByte = BitmapFactory.decodeByteArray(decodedString, 0, ecodedString.length);

For 2 days I can not find the answer (

Any ideas? Thanks!

P.S.

 private boolean decodeImage64(String uid, String image64, String name) {
    Bitmap decodedByte;
    boolean result = false;
    if (image64 != null && !image64.isEmpty()) {

        try {
            Log.e(TAG, "decodeImage64: image64.getBytes().length = " + image64.getBytes().length);
            byte[] decodedString = Base64.decode(image64, Base64.DEFAULT);
            Log.e(TAG, "decodeImage64: decodedString = " + decodedString + "  , decodedString.length = " + decodedString.length);
            decodedByte = BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);
            Log.e(TAG, "decodeImage64: decodedByte = " + decodedByte);

            if (decodedByte != null) {
                FileOutputStream out = null;
                try {
                    out = new FileOutputStream(getImageFolderName() + "/" + uid + ".png");
                    decodedByte.compress(Bitmap.CompressFormat.PNG, 100, out);
                    decodedByte.recycle();
                    out.close();

                } catch (Exception e) {
                    Log.e(TAG, Log.getStackTraceString(e));
                } finally {
                    try {
                        if (out != null) {
                            out.close();
                        }
                        if (decodedByte != null){
                            decodedByte.recycle();
                        }
                    } catch (IOException e) {
                        Log.e(TAG, Log.getStackTraceString(e));
                    }
                }
                result = true;
            }else {
                Log.e(TAG, "  !!!!!!!!!!!!!!!!!!!!!!! decodeImage64: decodedByte = null "  + name);
            }
        }catch (Exception e){
            Log.e(TAG, Log.getStackTraceString(e));
        }
    } else {
        Log.e(TAG, "decodeImage64: image = null " + name);
    }
    return result;
}

And logcat

good image:

06-29 02:33:57.465 18197-18584/cps.agrovisio E/myLogs:  ------------------------- doInBackground: Good photo
06-29 02:34:13.993 18197-18584/cps.agrovisio E/myLogs: decodeImage64: image64.getBytes().length = 2264744
06-29 02:34:14.085 18197-18584/cps.agrovisio E/myLogs: decodeImage64: decodedString = [B@bb8956d  , decodedString.length = 1676499
06-29 02:34:14.635 18197-18584/cps.agrovisio E/myLogs: decodeImage64: decodedByte = android.graphics.Bitmap@a6d05a2

bad image:

06-29 02:33:56.041 18197-18584/сps.agrovisio E/myLogs:  ------------------------- doInBackground: Bad photo 
06-29 02:33:57.177 18197-18584/cps.agrovisio E/myLogs: decodeImage64: image64.getBytes().length = 372570
06-29 02:33:57.194 18197-18584/cps.agrovisio E/myLogs: decodeImage64: decodedString = [B@abcf243  , decodedString.length = 275799
06-29 02:33:57.245 18197-18584/cps.agrovisio E/myLogs: decodeImage64: decodedByte = null

The string is too large it's in txt file: dropbox.com/s/3n4doyimeo8v9lz/base64image.txt?dl=0 — Viktor Burmaka
I think the problem is your String bigger than 64k , when i want to add to my project it give me constant string too long so can you get the size of string in there : get string size in bytes — Yasin Kaçmaz

Pato94 Pato94 · Accepted Answer · 2016-06-28T22:43:11

This may not be the answer you're looking for but have you considered using a framework? I've been using Picasso and it's as easy as: Picasso.with(context).load("http://i.imgur.com/DvpvklR.png").into(imageView);

http://square.github.io/picasso/

Android BitmapFactory returning null on Base64 decoded byte array

2 Answers