isSessionValid() returns NO when Facebook native application is installed
-
26-10-2019 - |
Question
I have an issue with SSO using the Facebook SDK for Android. The problem occurs only when the native Facebook application is installed. When it's not installed, everything works fine, specifically:
Facebook facebook = new Facebook(APP_ID);
facebook.authorize(mActivity, , new DialogListener() {
...
});
facebook.isSessionValid(); // returns true
But when the native application is installed, facebook.isSessionValid()
still returns false
despite the fact that I called the authorize
method.
I should add that I created an native Android based Facebook application with the hashkey generated from my debug certificate using keytool
.
keytool -exportcert -alias androiddebugkey -keystore ~/.android/debug.keystore | openssl sha1 -binary | openssl base64
What is going on?
Solution
SOLVED! :)
I sure hope this will work for you as well. The problem is that Windows generates an invalid key.
Run this with your app:
try {
PackageInfo info = getPackageManager().getPackageInfo("**YOURPACKAGENAME**", PackageManager.GET_SIGNATURES);
for (Signature signature : info.signatures) {
MessageDigest md = MessageDigest.getInstance("SHA");
md.update(signature.toByteArray());
Log.i("PXR", Base64.encodeBytes(md.digest()));
}
}
catch (NameNotFoundException e) {}
catch (NoSuchAlgorithmException e) {}
Don't forget to get Base64 (http://iharder.sourceforge.net/current/java/base64/).
The generated key is on your logcat, replace the old one with this.
Solution thanks to: http://p-xr.com/implementing-facebook-into-your-app-invalid-key-with-keytool/
OTHER TIPS
In addition to what Lior wrote
you can do the log like this:
Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
so you can use Andorid Base64