Android弹出窗口实现方法

/*** 弹窗--新手指引* @param cxt * @param id 资源编号* @create_time 2011-7-27 下午05:12:49*/public static void displayWindow(Context cxt, int id) {    final TextView imgTV = new TextView(cxt.getApplicationContext());    imgTV.setBackgroundDrawable(cxt.getResources().getDrawable(id));//设置背景    final WindowManager wm = (WindowManager) cxt.getApplicationContext().getSystemService("window");    WindowManager.LayoutParams wmParams = new WindowManager.LayoutParams();    wmParams.type = 2002;    wmParams.format = 1;    wmParams.flags = 40;    wmParams.width = LayoutParams.FILL_PARENT;    wmParams.height = LayoutParams.FILL_PARENT;    wm.addView(imgTV, wmParams);    imgTV.setOnClickListener(new Button.OnClickListener() {      @Override      public void onClick(View v) {        wm.removeView(imgTV);//点击，将该窗口消失掉      }    });}