I want to make my slider be always on top. - Already done. But I cant make him move. What changes should I do?
public class SliderOnTop extends Service {
    private SeekBar seekBar;
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }
    @Override
    public void onCreate() {
        super.onCreate();
        WindowManager.LayoutParams params = new WindowManager.LayoutParams(
                WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
                WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
                PixelFormat.TRANSLUCENT);
        WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
        RelativeLayout layout = new RelativeLayout(this);
        layout.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
        seekBar = new SeekBar(this);
        RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, 45);
        lp.bottomMargin = 0;
        lp.leftMargin = 0;
        layout.addView(seekBar, lp);
        wm.addView(layout, params);
    }
}