BitmapFactory.decodeByteArray sometimes returns null for same image

Asked Sep 15 '15 at 14:58

Active Sep 15 '15 at 14:58

Viewed 439 times

I am trying to decode a byte array. The decodeByteArray returns NULL sometimes and sometimes it returns bitmap for the same image. I am calling this inside doInBackground. This is what I am doing:

 public static Bitmap decodeSampledBitmapFromResource(byte[] data,
                                                        int reqWidth, int reqHeight) {
    final BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeByteArray(data, 0, data.length, options);
    options.inScaled = true;
    options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
    options.inJustDecodeBounds = false;
    Bitmap bmpOriginal = BitmapFactory.decodeByteArray(data, 0, data.length, options);
    return toGrayScale(bmpOriginal);
}

This behavior seems to be happening only on certain phones.

asked Sep 15 '15 at 14:58

android_eng

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This may be caused by memory allocation. It looks like the image is too large for certain phones to properly decode the image. Have you checked your LogCat? – Mike Sep 15 '15 at 15:03
what should I be looking for in the logCat ? – android_eng Sep 15 '15 at 15:12
For exceptions like(these are highlighted in red usually) http://docs.oracle.com/javase/8/docs/api/java/lang/OutOfMemoryError.html – Mike Sep 15 '15 at 15:29
I don't see anything there – android_eng Sep 15 '15 at 15:45
Does your app crash? – Mike Sep 15 '15 at 16:02
yes. It crashes. i Have added a unCaughtExceptionHandler – android_eng Sep 15 '15 at 16:06
1

Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/89717/discussion-between-mike-and-rohit-ramkumar). – Mike Sep 15 '15 at 16:10

BitmapFactory.decodeByteArray sometimes returns null for same image

0 Answers0