ScaleImage.java

public class Abc extends MainScreen
{
	Bitmap boxImage=Bitmap.getBitmapResource("box_s2.png"),scaleBitmap;
	//box_s2.png this image original height is 380X230;

	public Abc()
	{
		setTitle("Loading Screen");
		createGUI();
	}

	private void createGUI()
	{

		if(Display.getWidth()==480 && Display.getHeight()==360)
		{
			scaleBitmap=new Bitmap(150, 150);//Your required width and height;
			boxImage.scaleInto(scaleBitmap, Bitmap.FILTER_LANCZOS);
		}
		else//Means normal screens decrease the size;
		{
			scaleBitmap=new Bitmap(100, 100);
			boxImage.scaleInto(scaleBitmap, Bitmap.FILTER_LANCZOS);
		}
		BitmapField bitmapField=new BitmapField(scaleBitmap); //Here you use the GridField Manager;
		add(bitmapField);
	}

	public boolean onMenu(int instance)
	{
		return true;
	}
}