Android Facebook SDK: generate release key hash

Question

I'm building an app in which users can log in with Facebook.

I've created the hash keys like following:

try {          PackageInfo info = getPackageManager().getPackageInfo(          "com.app.package",          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));          Toast.makeText(getApplicationContext(), Base64.encodeToString(md.digest(),                  Base64.DEFAULT), Toast.LENGTH_LONG).show();          }          } catch (NameNotFoundException e) {           } catch (NoSuchAlgorithmException e) {           } 

In debug mode, everything works well.

When I export the project for release, it gives this error:

"Invalid key hash. The key hash ****************** does not match any stored key hashes" 

I paste the key printed in the Facebook Developer dashboard, but the application still gives me that error.

The complete package of my actvity is "com.app.package.views" and I tried to use this package (as Google Play Package Name) in the dashboard, but nothing changed.

How can I solve it? How can I generate the right release key hash?

Answer 1

You followed the steps that facebook provides for the creation of a login application?

You need a 'Production keyhash' obtained starting your release keystore:

From comand line:

keytool -exportcert -alias <RELEASE_KEY_ALIAS> -keystore <RELEASE_KEY_PATH> | openssl sha1 -binary | openssl base64 

And add this key on facebook app page options.

More information: https://developers.facebook.com/docs/android/getting-started/

Answer 2

I find a solution. for MAC

Use this one to get YOUR_RELEASE_KEY_ALIAS:

keytool -list -keystore /Users/***/Documents/keystore/***.jks 

and this one to get your release keyhash:

keytool -exportcert -alias YOUR_RELEASE_KEY_ALIAS -keystore /Users/***/Documents/keystore/***.jks | openssl sha1 -binary | openssl base64 

It works for me.