Android Facebook : Invalid Key. Android Key Mismatch

When i used the simple facebook login for Android which i made a few days ago i didn't have this prolbem. Now when i run the app i get an 'invalid key' - 'Android key mismatch' 06-

Solution 1:

The key that is displayed in your error logs is the app signature sent by facebook. All you need to do is copy this key and paste it in your app dashboard,android app key_hash section.

Solution 2:

Make sure to set the key on the developers site (Native Android App Key Hash) to the hash of your signing cert. This is different than the API key.

See the instructions here, Step 4: Add app signature to the Facebook Apphttps://developers.facebook.com/docs/mobile/android/sso/

Es2Fbgrno9htovlX6FcXiex6u0I is your hash - set the "Android Key Hash" to this value on the site.

Solution 3:

Generate a SHA1, this link can help you. Generating SHA1