????Android???????????

?????????????Android ????

????????????????????“Android????? & Java???л?????”?У?Android ??????У?

????Dalvik??Android?е?java?????????????????ж???????????????Android??ó??????????????????У???????????????Dalvik??????????

????????java????java????????????????SDK?е?dx???????.dex??????????????С?

????Android??????

????init?????1???????????????0????????и??????μ?init????г??????????????

????——-> /system/bin/sh

????——-> /system/bin/mediaserver

????——-> zygote

????—————–> system_server

????—————–>com.android.phone

????—————–>android.process.acore(Home)

????… …

????kthreadd?????2???????????????0???????????????????????????????????????????????

????Android?????????

???????????????????????Android?????????????????????Main Thread????????????????????UI??????????磺????????????????????????????????????????????????????????????????????д???????????????????????UI????

?????????Android ??????????????????????? Android UI??????????????????????Щ??????????UI???????С?

??????????UI???????????UI?????????android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views???????????java???????

????????UI?????????????????????????????UI?????????????????????UI???????????????ж??????????С????????????????????????????????????????UI??????5s??????????????????????????????????ó???

????????????????????????UI?????趨??????Υ??????????????android???????????Message Queue?????????????