try { PackageInfo info = getPackageManager().getPackageInfo( getPackageName(), PackageManager.GET_SIGNATURES); for (Signature signature : info.signatures) { MessageDigest md = MessageDigest.getInstance("SHA"); md.update(signature.toByteArray()); String hash = Base64.encodeToString(md.digest(), Base64.DEFAULT); Log.d("KeyHash:", hash); } } catch (NameNotFoundException e) { Log.e("name not found",..