introactivity: allow to override onCreate again

README.md

@@ -14,7 +14,8 @@ Watch it on [YouTube](https://www.youtube.com/watch?v=4vUe8xVAEIM).
 ## How do I use IntroActivity?
 Simple. Just create an `Activity` and extend `IntroActivity.`
 
-By extending `IntroActivity`, you'll automatically implement the `initialize()` method. This is where you set up your intro screens and any custom styling. It is not possible to override `onCreate()` as this is used by the library to set up your intro screen.
+By extending `IntroActivity`, you'll automatically implement the `initialize()` method. This is where you set up your intro screens and any custom styling.
+If you need to override `onCreate()`, be sure to call `super.onCreate()`, as the library relies on it.
 
 Here's an example of how to extend `IntroActivity` and add a basic intro screen:
 

library/src/main/java/com/miz/introactivity/IntroActivity.java

@@ -3,6 +3,7 @@
 import android.animation.ArgbEvaluator;
 import android.graphics.PorterDuff;
 import android.os.Bundle;
+import android.support.annotation.CallSuper;
 import android.support.v4.content.ContextCompat;
 import android.support.v4.view.ViewPager;
 import android.support.v7.app.AppCompatActivity;
@@ -28,7 +29,8 @@ public abstract class IntroActivity extends AppCompatActivity {
     private int mProgressCircleColor;
 
     @Override
-    protected final void onCreate(Bundle savedInstanceState) {
+    @CallSuper
+    protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
         setTheme(R.style.IntroActivity_Theme);