Bitmap - Base64 String - Bitmap conversion android

Question

I am encoding an image in the following way and store it in my database:

 public String getStringImage(Bitmap bmp){
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    bmp.compress(Bitmap.CompressFormat.JPEG, 100, baos);
    byte[] imageBytes = baos.toByteArray();
    String encodedImage = Base64.encodeToString(imageBytes, Base64.DEFAULT);
    return encodedImage;
}

Now I am trying to decode it in the following way and display it in an ImageView :

  try{
        InputStream stream = new ByteArrayInputStream(image.getBytes());
        Bitmap bitmap = BitmapFactory.decodeStream(stream);
        return bitmap;
    }
    catch (Exception e) {
        return null;
    }

}

However the ImageView remains blank and the image is not displayed. Am I missing something?

rabz100 · Accepted Answer · 2016-02-28 02:42:26Z

2

Try decoding the string first from Base64.

 public static Bitmap decodeBase64(String input) {
        byte[] decodedByte = Base64.decode(input, 0);
        return BitmapFactory.decodeByteArray(decodedByte, 0, decodedByte.length);
 }

In you case:

 try{
        byte[] decodedByte = Base64.decode(input, 0);
        InputStream stream = new ByteArrayInputStream(decodedByte);
        Bitmap bitmap = BitmapFactory.decodeStream(stream);
        return bitmap;
    }
    catch (Exception e) {
        return null;
    }

edited Feb 28, 2016 at 2:42

answered Feb 28, 2016 at 2:40

rabz100

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2 Comments

Alk Over a year ago

Are you saying I should do this instead of my try/catch block or in addition to it?

Alk Over a year ago

It works when I simply replace the try catch with the code you provided :)

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