How to create a Facebook key hash?

Question

In the Facebook android tutorial we are told to use following code to create a key hash:

keytool -exportcert -alias androiddebugkey -keystore ~/.andro

Answer 1

There are two ways to generate Hashkey for Facebook.

1. You can use the following code snippet

    try {
        PackageInfo info = getPackageManager().getPackageInfo(getPackageName(), PackageManager.GET_SIGNATURES);
        for (Signature signature : info.signatures) {
            MessageDigest messageDigest= MessageDigest.getInstance("SHA");
            messageDigest.update(signature.toByteArray());
            String hashKey = new String(Base64.encode(messageDigest.digest(), 0));
            Log.i("Hash Key ", "value is " + hashKey);
        }
    } catch (NoSuchAlgorithmException e) {
        Log.e("Exception ", "is ", e);
    } catch (Exception e) {
        Log.e("Exception ", "is ", e);
    }
   

2. You can create Hashkey for Facebook Online by pasting your SHA1 on This link

Happy Coding :)