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

Chemism

what differenciate the images, except their size? – Perihelion

My friend can you give us your image for try it ? – Yasmeen

All photos jpg. Problem from Android Tablet – Chemism

The string is too large it's in txt file: dropbox.com/s/3n4doyimeo8v9lz/base64image.txt?dl=0 – Chemism

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 – Yasmeen

@ViktorBurmaka Actually i paste your String to this site : Base64 to image and the result : Total Characters : 382324 and size 373.36KB – Yasmeen

@Yasin Kaçmaz Thanks! I'll try. But I successfully decoded 9 MB, and there is only 300 kb – Chemism

@ViktorBurmaka i think size doesnt matter, maybe you can post your method and logcat and we will think about it ? – Yasmeen

@Yasin Kaçmaz Thank you for your attention! I edited the question – Chemism

Answer 1

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("https://i.sstatic.net/E5w9Z.jpg").into(imageView);

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

Udo

Thanks! But I can't use Picasso. I got a few parameters in json, image in base64 one of them – Chemism

Answer 2

Slice the part data:image/jpg;base64, from image64. Only have the encoded string.

You can use substring method for this, it will work.

Unpolite