White background when Android app start up

Question

Every when my app starts up, there's a white background displays in a short time. Despite of using splash screen, the problem is still exists. I would like to set the start up screen to black instead of white as default!

This is my splash's screen activity:

public class SplashActivity extends Activity {

private static String TAG = SplashActivity.class.getName();
private static long SLEEP_TIME = 1;    // Sleep for some time

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.requestWindowFeature(Window.FEATURE_NO_TITLE);    // Removes title bar
    setContentView(R.layout.splash);

    // Start timer and launch main activity
    IntentLauncher launcher = new IntentLauncher();
    launcher.start();
}

private class IntentLauncher extends Thread {

    /**
      * Sleep for some time and than start new activity.
      */ 
    @Override
    public void run() {
        try {
            // Sleeping
            Thread.sleep(SLEEP_TIME*1000);
        } catch (Exception e) {
            Log.e(TAG, e.getMessage());
        }

        // Start main activity
        Intent intent = new Intent(SplashActivity.this, MainActivity.class);
        SplashActivity.this.startActivity(intent);
        SplashActivity.this.finish();
    }

}

@Override
protected void onPause() {
    super.onPause();
    overridePendingTransition(R.anim.fade_in, R.anim.fade_out);
}
}

Answer 1

in styles.xml, in the theme specified in your AndroidManifest.xml, add the following line:

<item name="android:windowBackground">@android:color/black</item>

Answer 2

Use this tag in your manifest:

android:theme="@android:style/Theme.NoTitleBar.Fullscreen"

instead of :

this.requestWindowFeature(Window.FEATURE_NO_TITLE);