AsyncTask加载图片

http://blog.csdn.net/sodino/article/details/7741674

http://www.cnblogs.com/weisenz/archive/2012/04/17/2453421.html

http://blog.csdn.net/wangjinyu501/article/details/8219317

http://www.open-open.com/lib/view/open1330657336952.html

http://www.cnblogs.com/imlucky/archive/2012/07/31/2616317.html

http://blog.163.com/ppy2790@126/blog/static/103242241201382423551678/

http://www.oschina.net/code/snippet_176897_7207

http://mobile.51cto.com/android-266516_1.htm

http://blog.csdn.net/shaojie519/article/details/6595720

http://blog.csdn.net/zircon_1973/article/details/7693839