Check Your Key Hash Android
How to Check your Key Hash for Facebook#
Because generation of the Key hash using the commandline sometimes does not work or works only the first time.
keytool -exportcert -alias androiddebugkey -keystore ~/.android/debug.keystore | openssl sha1 -binary | openssl base64
Password is: android
Use the following code, in an activity. It should output to Logcat
PackageInfo info = null;
try {
info = getPackageManager().getPackageInfo(getPackageName(), PackageManager.GET_SIGNATURES);
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
for (Signature signature : info.signatures)
{
MessageDigest md = null;
try {
md = MessageDigest.getInstance("SHA");
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
md.update(signature.toByteArray());
Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
}
Also if you get an error similar to this when Logging your session and state variables:
{Session state:CLOSED_LOGIN_FAILED, token:{AccessToken token:ACCESS_TOKEN_REMOVED permissions:[]}, appId:131***64547}
Make sure you have this code:
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Session.getActiveSession().onActivityResult(this, requestCode, resultCode, data);
}
Source: http://stackoverflow.com/questions/23046136/facebook-login-fails-session-stateclosed-login-failed-tokenaccesstoken-tok/23047317#23047317 http://stackoverflow.com/questions/21851575/session-stateopening-tokenaccesstoken-tokenaccess-token-removed-permission https://developers.facebook.com/docs/android/getting-started/