进过查找资料知道，android的页面置顶到状态栏只支持linearlayout和textview,而slidingmenu继承的是RelativeLayout，所以需要在RelativeLayout根部局下插入一个textview，修改attachToActivity方法，如下图：

		switch (slideStyle) {
		case SLIDING_WINDOW:
			mActionbarOverlay = false;
			ViewGroup decor = (ViewGroup) activity.getWindow().getDecorView();
			ViewGroup decorChild = (ViewGroup) decor.getChildAt(0);
			// save ActionBar themes that have transparent assets
			decorChild.setBackgroundResource(background);
			decor.removeView(decorChild);
		//	decor.addView(this);  注释掉
			setContent(decorChild);
           //解决侧边栏沉浸问题
			RelativeLayout relativeLayout = new RelativeLayout(activity);
			TextView textView = new TextView(activity);
			textView.setFitsSystemWindows(true);
			relativeLayout.addView(textView);
			relativeLayout.addView(this);
			decor.addView(relativeLayout);
			break;
		case SLIDING_CONTENT:
			mActionbarOverlay = actionbarOverlay;
			// take the above view out of
			ViewGroup contentParent = (ViewGroup)activity.findViewById(android.R.id.content);
			View content = contentParent.getChildAt(0);
			contentParent.removeView(content);
			contentParent.addView(this);
			setContent(content);
			// save people from having transparent backgrounds
			if (content.getBackground() == null)
				content.setBackgroundResource(background);
			break;
		}
	}