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Android???????

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

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Activity???

Activity????

Activity?????????????????????????????????

Activity??????

• running??????????????
• paused???????????????
• stopped?????????????
• killed????????

Activity??????

• onCreate()???Activity??????
• onStart()?????Activity
  -.onResume()?????
• onPause()?????
• onStop()?????
• onDestroy()???Activity
• onRestart()?????

???????

• ??????
• ????????????
• ????????????
• ?????????
• ?????????

Activity????

Activity????????????

Activity?????

• standard?????
• singletop??????
• singletask??????
• singleinstance????

scheme?????

scheme??App???????????????

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Fragment???

Fragment????????????

Fragment?Activity?????????????????????????????

Activity??Fragment????

• ???????static newInstance()
• ???????FragmentFactory.create()

FragmentPageAdapter?FragmentPageStateAdapter????

• FragmentPageAdapter??????????Fragment??????
• FragmentPageStateAdapter??????????Fragment????Fragment???

Fragment??????

• onAttach()????Activity
• onCreate()???Fragment
• onCreateView()???Fragment??
• onActivityCreated()?Activity????
• onStart()?????
  -.onResume()?????
• onPause()???
• onStop()???
• onDestroyView()?????
• onDestroy()???Fragment
• onDetach()??Activity??

Fragment????

• Fragment??Activity?getActivity()
• Activity??Fragment?????
• Fragment????FragmentManager.findFragmentById

Fragment?replace?add?remove???

• replace?????Fragment
• add?????Fragment
• remove?????Fragment

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Service???

Service????

Service????????????????????

Service?Thread????

• Service????????????????
• Thread??????????????Activity???

Service?????

• startService???????
• bindService????????????

Service?????

• startService?onCreate() ? onStartCommand() ? onDestroy()
• bindService?onCreate() ? onBind() ? onUnbind() ? onDestroy()

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Broadcast Receiver???

Broadcast Receiver????

Broadcast????????????????Intent?????

Broadcast Receiver??????

• ???????
  -??App???

Broadcast Receiver????

• ?????????
• ??????????
• ???????App??
• Sticky????????

Broadcast Receiver????

• ?????????
• ??????Activity????

Broadcast Receiver????

• ????????BroadcastReceiver???onReceive()
• ??Binder??
• AMS????

LocalBroadcastManager???

• ????
• ????
• ???

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WebView???

WebView??????

API16?????????????????WebView.addJavascriptInterface?

WebView?????

• ?onDestroy()???WebView??
• ??WebView.destroy()

WebView?jsbridge?

??JavaScript????????????

WebViewClient?onPageFinished?

???WebChromeClient.onProgressChanged?

WebView?????

??onDestroy()??System.exit(0)?

WebView?????

??????????????

WebView?????

• ????
• ???Context

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Binder???

Linux?????

• ???????????
• ???????????
• Binder????????

Binder????

????????????

Binder?????

• Service??Object?add??
• Client??Binder????????
  -Binder??ServiceManager????

AIDL?

• Stub????Proxy
• transact()??????
  -???????

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Handler???

Handler????

??MessageQueue?Runnable?????

Handler?????

• post(runnable)
• sendMessage(message)

Handler????????

????????????????

• ???Activity
• ???????
• removeCallback()

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AsyncTask???

AsyncTask????

??????Handler??????

AsyncTask?????

• ?????Params?Progress?Result
• ?????onPreExecute?doInBackground?onProgressUpdate?onPostExecute?onCancelled

AsyncTask????????

????????????????

• ???Activity
• ???????
• cancel()

AsyncTask?????

?Activity????????

AsyncTask?????

???????????Activity????AsyncTask?????

AsyncTask??????

• 2.3????
• 2.3????
• ????executeOnExecutor()????

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HandlerThread???

HandlerThread????

???????????????

HandlerThread???

• ?????Thread
• Looper???
• ????

IntentService???

IntentService????

???Service??????????????????

IntentService?????

• ???IntentService
• ??onHandlerIntent()
• ??????????

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??

???????

?????????????????????????????????????????????????????????????????????????