Encode and decode bitmap object in base64 string in Android

public static String encodeToBase64(Bitmap image, Bitmap.CompressFormat compressFormat, int quality){    ByteArrayOutputStream byteArrayOS = new ByteArrayOutputStream();    image.compress(compressFormat, quality, byteArrayOS);    return Base64.encodeToString(byteArrayOS.toByteArray(), Base64.DEFAULT);}public static Bitmap decodeBase64(String input){    byte[] decodedBytes = Base64.decode(input, 0);    return BitmapFactory.decodeByteArray(decodedBytes, 0, decodedBytes.length);}

Example usage:

String myBase64Image = encodeToBase64(myBitmap, Bitmap.CompressFormat.JPEG, 100);Bitmap myBitmapAgain = decodeBase64(myBase64Image);

Hope this will help you

 Bitmap bitmap = BitmapFactory.decodeStream(this.getContentResolver().openInputStream(uri));

(if you are referencing URI to construct bitmap) OR

Resources resources = this.getResources();Bitmap bitmap= BitmapFactory.decodeResource(resources , R.drawable.logo);

(if you are referencing drawable to construct bitmap)

Then Encode it

 ByteArrayOutputStream stream = new ByteArrayOutputStream();   bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream); byte[] image = stream.toByteArray(); String encodedImage = Base64.encode(image, Base64.DEFAULT);

For Decoding Logic will be exactly reverse of encoding

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

To encode the bimap to image:

 ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();    bitmap.compress(Bitmap.CompressFormat.PNG, 80, byteArrayOutputStream);   byte[] imageBytes = byteArrayOutputStream.toByteArray();   String encodedImage = Base64.encodeToString(imageBytes, Base64.DEFAULT);    Log.d("bytearray", String.valueOf(byteArrayOutputStream.toByteArray()));    Log.d("encodedimage",encodedImage);