NullPointerException

public class MyActivity {
	
	private com.github.glomadrian.roadrunner.IndeterminateRoadRunner customProgressBarSVG;
	
	@Override
    protected void onCreate(Bundle savedInstanceState) {
    	super.onCreate(savedInstanceState);
        setContentView(R.layout.test2);
        
        customProgressBarSVG = (IndeterminateRoadRunner) this.findViewById(R.id.customProgressBarSVG);
        customProgressBarSVG.start();
    }
    
}