Invalid Key hash with Facebook Android SDK

Question

I\'m trying to use Facebook Android SDK to develop a simple app with the Facebook Login Button. But i\'m having trouble with Key Hashes. I\'ve created both a debug key and a rel

Answer 1

 try {
         PackageInfo info = getPackageManager().getPackageInfo("your package name", PackageManager.GET_SIGNATURES);
         for (Signature signature : info.signatures) {
            MessageDigest md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            Log.d("KeyHash:", "KeyHash:  " + Base64.encodeToString(md.digest(), Base64.DEFAULT));
         }
      }
      catch (PackageManager.NameNotFoundException e) {

      }
      catch (NoSuchAlgorithmException e) {

      }