How to Share Image using Facebook android

Question

I am trying to share Image and Content via Facebook,but what i am trying is if user is not logged in via Facebook,and user click on Share button then first it should ask for

Answer 1

First time when you try to log in, access token is null. So, it is going on else part. Do this in else part, I think so it may work for you :

LoginManager.getInstance().registerCallback(mcallbackManager, new FacebookCallback()
            {
            @Override
            public void onSuccess(LoginResult loginResult) {

                GraphRequest request = GraphRequest.newMeRequest(loginResult.getAccessToken(), new GraphRequest.GraphJSONObjectCallback() {
                    @Override
                    public void onCompleted(JSONObject jsonObject, GraphResponse graphResponse) {

}
});

}
});