This app has no Android Key hashes configured. - Login with Facebook SDK

Question

I have problem about login with facebook acount in my application. I read to Facebook Doc. And I did all step as Facebook Doc.

First in login with facebook acount in app - SUCCESSFUL ! and than logout in application. I want to login again with my facebook acount. But not working !! And I took this Excepiton ! Please help me !

Exception : This app has no Android Key hashes configured.Configure your app key hashes at http:developers.facebook.com/apps/"APP ID"

Finaly; I used to part of code for HashKey Genarate

 try {
        PackageInfo info =     getPackageManager().getPackageInfo("MY PACKAGE NAME",     PackageManager.GET_SIGNATURES);
        for (android.content.pm.Signature signature : info.signatures) {
            MessageDigest md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            String sign=Base64.encodeToString(md.digest(), Base64.DEFAULT);
            Log.e("MY KEY HASH:", sign);
          //  Toast.makeText(getApplicationContext(),sign,     Toast.LENGTH_LONG).show();
        }
} catch (NameNotFoundException e) {
} catch (NoSuchAlgorithmException e) {
}

I resolved my issue. I should have done setting on Facebook. Steps :

Go to facebook developer's page : https://developers.facebook.com/
Open the App tabs and than click the Setting
Paste the generate hashkey on HashKey's field = If you don't have it yet, get your key hash part of code
And than Single Sign On will be "Yes" : Single Sign On: Enable this setting.

I wanted to share my resolve. Maybe someone need this solution. Good Luck !

Thanks - you assisted me and I had experienced the same problem +1 — Simon
Facebook provides now very good quick start explanation how to generate hashes, after you click on the settings button and add a new platform: For Mac: keytool -exportcert -alias androiddebugkey -keystore ~/.android/debug.keystore | openssl sha1 -binary | openssl base64 For Windows: keytool -exportcert -alias androiddebugkey -keystore %HOMEPATH%\.android\debug.keystore | openssl sha1 -binary | openssl base64 — FilipR
You should post your solution as answer instead, and marking it as an answer. This will stop showing this question as unanswered. — Sufian

Nielarshi Nielarshi · Accepted Answer · 2014-12-14T11:50:31

You need not generate your hash key. When you will try to access facebook from your app, you will get an error msg saying following "[Hash Key]" is not registered or configured. Just copy that key and go to developer.facebook.com where you have registered your app for facebook verification and include under key hashes.

Remember : For every device, the hash key may be different. You need to include it freshly.

By default this key should do : 2jmj7l5rSw0yVb/vlWAYkK/YBwk=

Also, before everything, you need to provide facebook with your App details, along with screenshots of where you are using facebook features and reasons for why you are using. They need to verify that.

This app has no Android Key hashes configured. - Login with Facebook SDK

5 Answers