Question

I’d like to authenticate my users using the Facebook SSO service. I managed to handle basic login with the official Android Facebook sdk, which was quite painless, but it seems that the sdk just can’t handle device rotation – at least I couldn’t find a way to get it work correctly.

The auth code:

loginButtonFacebook.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // Do FB login
                facebook.authorize(LoginActivity.this, new DialogListener() {
                    @Override
                    public void onComplete(Bundle values) {
                        Toast.makeText(LoginActivity.this, "Facebook login successful", Toast.LENGTH_SHORT).show();

                        Log.d(TAG, "FACEBOOK LOGIN SUCCESSFUL");
                        //loginFB(facebook.getAccessToken());
                    }

                    @Override
                    public void onFacebookError(FacebookError error) {
                        Toast.makeText(LoginActivity.this, "FacebookError:" +error.getLocalizedMessage(), Toast.LENGTH_SHORT).show();
                    }

                    @Override
                    public void onError(DialogError e) {
                        Toast.makeText(LoginActivity.this, "Error: "+e.getLocalizedMessage(), Toast.LENGTH_SHORT).show();
                    }

                    @Override
                    public void onCancel() {
                        Toast.makeText(LoginActivity.this, "Cancelled!", Toast.LENGTH_SHORT).show();
                    }
                });
            }
        });

My Activity also needs to handle the result from the FB login activity:

@Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        facebook.authorizeCallback(requestCode, resultCode, data);
    }

This works, but the facebook.authorize(…) method need a reference for my current Activity, so it can do a callback later. But if the device is rotated when the user is in the facebook authorization Activity, my previous Activity gets destroyed. So after the user authorizes my app., I don’t get the callback about this.

Has anyone found a solution for this?

Thanks

Answer 1

in your manifest file under your activity name just add the following line

android:configChanges="orientation"

inside your activity

@Override
public void onConfigurationChanged(Configuration newConfig) 
{
    super.onConfigurationChanged(newConfig);
    ................
}

Refer here and here