I followed the steps from this and it crashes my app when running. Below is my entire code.
public class MainActivity extends FragmentActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.requestWindowFeature(Window.FEATURE_NO_TITLE);
        this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
        TextView tx = (TextView)findViewById(R.id.textView5);
        Typeface tf = Typeface.createFromAsset(getAssets(),"fonts/myriad_pro_regular.ttf");
        tx.setTypeface(tf);
        setContentView(R.layout.activity_main);
    }
}
When I add the below codes
TextView tx = (TextView)findViewById(R.id.textView5);
Typeface tf = Typeface.createFromAsset(getAssets(),"fonts/myriad_pro_regular.ttf");
tx.setTypeface(tf);
The app crashes and I have no idea what I did wrong here.