Android splash screen ImageView not loading

Question

My Android application is supposed to show a splash screen consisting solely of an ImageView while it is still loading. The ImageView should just display a local resource. Here is my code:

public class GameActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        ImageView splash = new ImageView(this);
        splash.setImageResource(R.drawable.splashImage);

        RelativeLayout layout = new RelativeLayout(this);
        layout.setId(R.id.gameView);
        uilayout addView(splash, someLayoutParams);
        setContentView(layout, someOtherLayoutParams);
        // with a return-statement, the image would be displayed now

        final GameActivity activity = this;
        this.findViewById(R.id.gameView).getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                // this is supposed to wait until the image has been fully loaded
                activity.init(this);
            }
        });
    }

    public void init(ViewTreeObserver.OnGlobalLayoutListener listener) {
        try {
            findViewById(R.id.gameView).getViewTreeObserver().removeOnGlobalLayoutListener(listener);
        } catch (NoSuchMethodError x) {
            findViewById(R.id.gameView).getViewTreeObserver().removeGlobalOnLayoutListener(listener);
        } finally {
            LinearLayout layout = new LinearLayout(this);
            // lots of stuff
            setContentView(layout);
        }
    }
}

My problem is that as soon as I execute code after the first call for setContentView(), my splash screen image is not displayed and the new layout immediately shows up. I would appreciate any help on how to solve this problem.

EDIT: It was my fault to assume that my code was the ideal solution for a splash screen. This tutorial really helped me out. My solution based on this tutorial:

@drawable/layer-list_splash:

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:drawable="@color/color_background"/>

    <item>
        <bitmap
            android:gravity="center"
            android:src="@drawable/sprite_splash"/>
    </item>
</layer-list>

and my styles.xml:

<resources>
    <style name="AppTheme" parent="Theme.AppCompat.NoActionBar">
        <item name="android:windowBackground">@drawable/layers_splash</item>
    </style>
</resources>

Answer 1

How about running the activity.init() after 2 secs to show the splash screen?

new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            activity.init();
        }
    }, 2000)