关于Android线程优先级设立
关于Android线程优先级设置
http://hi.baidu.com/%CE%D2%BA%DC%B0%AE%D5%C5%B2%AE%C2%D7/blog/item/85a4b051d1205f77843524f1.html
http://android.tgbus.com/Android/tutorial/200901/174644.shtml