隐藏服务中的通知栏

Question

我使用以下代码在我的服务中显示视图，如何禁用/隐藏/阻止在我的代码中打开通知栏？

public void onStart(final Intent intent, final int n) 
{

    numIs = 1;
    this.view = ((LayoutInflater)this.getSystemService("layout_inflater")).inflate(R.layout.screen, (ViewGroup)null);
    this.windowManager = (WindowManager)this.getSystemService("window");
    final WindowManager.LayoutParams windowManagerLayoutParams = new WindowManager.LayoutParams();
    windowManagerLayoutParams.type = 2002;
    windowManagerLayoutParams.format = 1;
    windowManagerLayoutParams.flags = 40;
    windowManagerLayoutParams.height = -1;
    windowManagerLayoutParams.width = -1;
    this.windowManager.addView(this.view, (WindowManager.LayoutParams)windowManagerLayoutParams);      
}