Bitmap to ByteArray Android

public static byte[] convertBitmapToByteArray(Bitmap bitmap) {
if (bitmap == null) {
return null;
} else {
byte[] b = null;
try {
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
bitmap.compress(CompressFormat.PNG, 0, byteArrayOutputStream);
b = byteArrayOutputStream.toByteArray();
} catch (Exception e) {
e.printStackTrace();
}
return b;
}

}

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