onCreate中显示popwindow

// 循环检测activity是否初始化完毕
starnum_seekbar.postDelayed(new Runnable() {

	@Override
	public void run() {
		// TODO Auto-generated method stub
		if (null != getWindow().getDecorView().getWindowToken()) {
			LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
			View undoView = inflater.inflate(
					R.layout.view_seekbarhint2, null);
			starnum_seekbar.showPopup(undoView);
			starnum_seekbar.setProgress(1);
			handler.removeCallbacks(this);
		} else {
			handler.postDelayed(this, 5);
		}

	}
}, 5);