Image Encoding And Decoding Using Base64 In Android Application

In my application I have faced a small issue in encoding and decoding images to String and pass it to web service. After getting the bitmap image, I convert it into byte[]

Solution 1:

In the case of OutOfMemoryError, below code helps me.

publicString BitMapToString(Bitmap bitmap){
        ByteArrayOutputStream baos=new  ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.JPEG,100, baos);
        byte [] b=baos.toByteArray();
        String temp=null;
        try{
        System.gc();
        temp=Base64.encodeToString(b, Base64.DEFAULT);
        }catch(Exception e){
            e.printStackTrace();
        }catch(OutOfMemoryError e){
            baos=new  ByteArrayOutputStream();
            bitmap.compress(Bitmap.CompressFormat.JPEG,50, baos);
            b=baos.toByteArray();
            temp=Base64.encodeToString(b, Base64.DEFAULT);
            Log.e("EWN", "Out of memory error catched");
        }
        return temp;
  }

Basically what i did is : i catch OutofMemoryError and in that catch block i resize it by 50% and then i encode it to string.

Solution 2:

Try My Below Sample Code Of Project

Bitmapbmp= (Bitmap) data.getExtras().get("data");

        img.setImageBitmap(bmp);
        btnadd.requestFocus();

        ByteArrayOutputStreambaos=newByteArrayOutputStream();
        bmp.compress(Bitmap.CompressFormat.JPEG, 100, baos);
        byte[] b = baos.toByteArray();
        encodedImageString = Base64.encodeToString(b, Base64.DEFAULT);

        byte[] bytarray = Base64.decode(encodedImageString, Base64.DEFAULT);
        Bitmapbmimage= BitmapFactory.decodeByteArray(bytarray, 0,
                bytarray.length);