Here is a gdx Game class which creates and sets a screen, which clears and then uses a SpriteBatch to draw a single texture. This pair of classes "flickers" or "tears".. it seems to blink as a grey bar goes from top to bottom.

blank-game-flickers

public class BlankGame extends Game {

  MainScreen screen;

  @Override
	public void create () {
		MainScreen screen = new MainScreen();
		this.setScreen(screen);
	}

	@Override
	public void dispose () {
		screen.dispose();
	}

	@Override
	public void render () {
		super.render();
	}
}

public class MainScreen implements Screen {

  SpriteBatch batch = new SpriteBatch();

	@Override
	public void resize (int width, int height) {

		batch.begin();

		Texture tile = new Texture(Gdx.files.internal("thatch.png"));
		int tWidth = tile.getWidth();
		int tHeight = tile.getHeight();
		if (tWidth <= 0 || tHeight <= 0) {
			throw new RuntimeException("expected tile width and height");
		}
		int sWidth = Gdx.graphics.getWidth();
		int sHeight = Gdx.graphics.getHeight();

		Gdx.gl.glClearColor(0.1f, 0.1f, 0.1f, 1);
		Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);

		batch.draw(tile, (sWidth - tWidth) / 2, (sHeight - tHeight) / 2);

		batch.end();
	}

	@Override
	public void render (float delta) {
	}

	@Override
	public void show () {
		// TODO Auto-generated method stub

	}

	@Override
	public void hide () {
		// TODO Auto-generated method stub

	}

	@Override
	public void pause () {
		// TODO Auto-generated method stub

	}

	@Override
	public void resume () {
		// TODO Auto-generated method stub

	}

	@Override
	public void dispose () {
		batch.dispose();
	}
}