Android single sign-on

Question

I\'m getting login failed invalid key error while using an updated version of Facebook. If I delete it - it\'s working fine..

What is t

Answer 1

Please follow this link Generate correct Hash Key

You can generate Hash key problematically for both signed and unsigned app. And copy this key from your Logcat.

Answer 2

better use this piece of code

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

    } catch (NoSuchAlgorithmException e) {

    }

Answer 3

The correct way to create a hash key

Please follow the following steps.

Here are the steps:

1. Download OpenSSL from Google Code

2. Extract it. Create a folder- OpenSSL in C:/ and copy the extracted code here.

3. detect the debug.keystore file path. If you don't find it, then do a search in C:/ and use the path in the command in next step.

4. detect your keytool.exe path and go to that dir/ in a command prompt and run this command (in one line):

   $ keytool -exportcert -alias androiddebugkey -keystore "C:\Documents and Settings\Administrator.android\debug.keystore" | "C:\OpenSSL\bin\openssl" sha1 -binary |"C:\OpenSSL\bin\openssl" base64

5. it will ask for a password. Put "android", that's all. You will get a key-hash.

Answer 4

Well, this might not be an answer, I guess you checked Android, the Facebook SDK, SSO, and You.

Are you using Windows XP for generating a hash? Maybe there lies the problem.

Answer 5

First, you need to create the hash key using the below code according to your path.

C:\Documents and Settings\Logistic103>keytool -export -alias androiddebugkey -keystore "C:\Documents and Settings\Logistic103\.android\debug.keystore" | E:\Downloads\openssl-0.9.8k_WIN32\bin\openssl.exe sha1 -binary | E:\Downloads\openssl-0.9.8k_WIN32\bin\openssl.exe enc -a -e

Then enter the password:

Enter keystore password:  android

Then go to Facebook developers and login into Facebook. After login goto your application and click on edit setttings link:

Then add the generated key as under to your application,

And that's how you do it ;)

The above steps works well for me.