private void getAppKeyHash(){try{PackageInfo info = getPackageManager().getPackageInfo(getPackageName(), PackageManager.GET_SIGNATURES);for(Signature signature : info.signatures){MessageDigest md;md = MessageDigest.getInstance("SHA");md.update(signature.toByteArray());String something = new String (Base64.encode(md.digest(),0));Log.i("KAKAO","Hash Key :::::>"+ something);}}catch(Exception e){Log..