I found Facebook Android SDK has deprecated its class Session in its 4.x version. What class or method I should use to replace Session.OpenRequest? Thanks.
The classes you need to look into are CallbackManager and LoginManager (and also AccessToken). I replaced my old Session.OpenRequest code with something akin to the following, it may be helpful as a starting point:
FacebookSdk.sdkInitialize(getApplicationContext());
m_CallbackManager = CallbackManager.Factory.create();
LoginManager.getInstance().registerCallback(m_CallbackManager,
new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
completeLogin();
}
@Override
public void onCancel() {
// TODO: this
}
@Override
public void onError(FacebookException exception) {
// TODO: this
}
});
LoginManager.getInstance().logInWithReadPermissions(this, Arrays.asList("public_profile", "user_friends"));