??????????У??????????????1?????????
????post ???????????????
????postAtFrontOfQueue ?????????????????????????
????postAtTime ????????????
????postDelayed ??????????????????
???????????????????????????HandlerThread??????? + ??????е????????????????????IO?????????????????????????????????????????￡?????ο???????????
???????????IO???????????????棬???????postAtFrontOfQueue
???????????IOд????????????棬???????postDelayed
???????????????????post
????????????????
??????Android????У?????????????????????????????????????????????е?????????????????????????顣???????????????????CPU???????л????????????????????????????????????????????????????????????????CPU?????
????Android?е???????????Linux?????????????Щ?????????????-20??19??????Android?У????????????????????У?
????THREAD_PRIORITY_DEFAULT??????????????????0
????THREAD_PRIORITY_LOWEST?????????????19
????THREAD_PRIORITY_BACKGROUND ?????????????????????????10
????THREAD_PRIORITY_MORE_FAVORABLE ???THREAD_PRIORITY_DEFAULT??????????-1
????THREAD_PRIORITY_LESS_FAVORABLE ???THREAD_PRIORITY_DEFAULT???????Щ????1
????????????????????????????????????run???????????????????д???
????android.os.Process.setThreadPriority(priority);
????????????????????????￡?
????????????????????ó?THREAD_PRIORITY_BACKGROUND
?????????????????????????????THREAD_PRIORITY_LOWEST
???????????????????????t?????????
???????
??????Android?й?????????????飬????????????????????????????????ù????????????????????????????????????????????????????????????á?