NullPointerException on a page [duplicate]
NullPointerException on a page [duplicate] This question already has an answer here: So basically I am trying to implement this tutorial here: https://github.com/medyo/android-about-page I have added the necessary dependencies in gradle. However when I open my AboutCreator Activity my app crashes Code for AboutCreatorActivity public class AboutCreatorActivity extends AppCompatActivity { @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP) @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_about_creator); //setTitle("About Page"); getSupportActionBar().setDisplayHomeAsUpEnabled(true); getWindow().getDecorView().setSystemUiVisibility( View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN); FancyAboutPage fancyAboutPage=findViewById(R.id.fancyaboutpage); //fancyAboutPage.setCoverTintColor(Color.BLUE); //Optional fancyAbo...