?4? Android????

1
?4? Android????
2
4.1 ??????

• ???????
• ?????????Android????????????????,???Android???????
  ????
• ????????Android??????????

3
4.1 ??????

• Android?????????????
• ????
• ????
• ????
• ????
• ???

4
4.1 ??????

• ????
• ?????Android?????????,???????????,????????
• ????Activity?????????
• ?????Activity??,????Activity?????????
• ??????????????????,?onCreate()?onStart()?onDestroy
  ()
• ???BroadcastReceiver????onReceive()??
• Android??????????????,????????????,???????????,???
  ????????????

5
4.1 ??????

• ????
• ??????????????????,??????????,??????????
• ??????????,?????????????Activity??,????????????
• Android?????????????,?????????,Android????????????
  ?????????

6
4.1 ??????

• ????
• ????????????????
• ??????
• ???????
• Android???????????????????????,???????????

7
4.1 ??????

• ????
• ??????????????????,???????????Activity???
• Android????????????????,????????,?????????????????
  ?????

8
4.1 ??????

• ???
• ????????????????
• ?????????????????
• ?????Android???????????,Android???????????????,???
  ????????,?????????
• ?????????,??????????????
• ???????????????????????
• ??????????????????????

9
4.2 Android??

• ??????????????,Android????????????
• Android??????????,???Activity?Service?BroadcaseRec
  eiver?ContentProvider

10
4.2 Android??

• Activity
• Activity?Android??????,??????????,????????????????
  
• Android?????????????Activity,?????????????Activity
  ,??????????????
• ?????????????,???????,???
• Service
• Service????????,??????????????

11
4.2 Android??

• BroadcaseReceiver
• BroadcaseReceiver???????????????
• ?????????
• ??????Activity??Notification???????????
• Notification????????????,?????????????????????????
  ???????

12
4.2 Android??

• ContentProvider
• ContentProvider?Android?????????????????,????????C
  ontentProvider?????????????
• ??????????????????,????SQLite?????
• Android????????????ContentProvider,???????????????
  ?

13
4.2 Android??

• ??????
• ??Android????????????,????????????????
• ??????,?????????????????????????

14
4.3 Activity????

• Activity????
• Activity?????Activity?????????
• Activity???????,???????????????????????
• ????,Activity???????????,????????,?????????
• ????,Activity?????????,?Activity????????????,?????
  ??????
• ????,Activity?????????????,??????Activity???Activi
  ty????
• ?????,??????????Activity????????

15
4.3 Activity????

• Activity???????????

16
4.3 Activity????

• Activity?
• ?????????

17
4.3 Activity????

• ???????

18
4.3 Activity????

• Activity???????????

19
4.3 Activity????

• Activity????/?????????

20
4.3 Activity????

• Activity???????????
• Activity??????
• Activity???????????????????????????
• ??????????????????

21
4.3 Activity????

• ?????
• ???????Activity??????????,??onCreate(),???onDestro
  y()
• ??????onCreate()????Activity????????????,??onDestr
  oy()???????
• ?????????,Android??????onDestroy()??,???????

22
4.3 Activity????

• ??????
• ???????Activity??????????????,???onStart(),???onSt
  op()

23
4.3 Activity????

• ??????
• onStart()????????????????????
• onStop()??????????????????????????????
• onRestart()???onSart()????,???Activity????????????
  ,???????????
• onStart()?onStop()??????
• onStart()?onStop()???????????BroadcastReceiver

24
4.3 Activity????

• ??????
• ???????Activity???????,???????????,???onResume(),?
  ??onPause()
• ?Activity????????onResume()?onPause()?????,???????
  ??????????????

25
4.3 Activity????

• ??????
• onPause()??????????????
• ?onPause()???,onStop()?onDestroy()????Android????
• onPause()?????????,?????????????

26
4.3 Activity????

• onPause()?onSaveInstanceState()???
• ?????????????????????,???????
• onPause()???????????,?????????????????????????
• onSaveInstanceState()?????????????,???????Bundle?
• Bundle??????????????
• ?onSaveInstanceState()???Bundle????,?????onRestore
  InstanceState()?onCreate()?,?????Bundle????????

27
4.3 Activity????

• ????????Android??
• ????ActivityLifeCycle
• ???edu.hrbeu.ActivityLifeCycle
• Activity??ActivityLifeCycle

28
4.3 Activity????

• ActivityLifeCycle.java?????

29
4.3 Activity????

• ActivityLifeCycle.java?????

30
4.3 Activity????

• ActivityLifeCycle.java?????

31
4.3 Activity????

• ActivityLifeCycle.java?????
• ?????????????????????????????,????????????LogCat
  ?
• ?????????????,?LogCat?????LifeCycleFilter,??????by
  Log Tag,??????LIFTCYCLE

32
4.3 Activity????

• ?????
• ?????ActivityLifeCycle ?LogCat??
• ??ActivityLifeCycle
• ?????????
• ??ActivityLifeCycle
• LogCat????

33
4.3 Activity????

• ?????
• ???????onCreate() ? onStart()? onResume() ?
  onPause()? onStop()? onDestroy()
• ??onCreate()??????
• ??onStart()?Activity??????
• ??onResume()??????
• ??onPause()?onStop()?onDestroy(),?????????

34
4.3 Activity????

• ??????
• ????
• ??ActivityLifeCycle
• ???/????????????
• ????????????
• ActivityLifeCycle????????
• ???????LogCat????

35
4.3 Activity????

• ??????
• ??????? onSaveInstanceState ()? onPause()?
  onStop() ? onRestart()? onStart()? onResume()
• ??onSaveInstanceState()????Activity??
• ??onPause()?onStop(),??????Activity???
• ??onRestart()??????????????
• ??onStart()?onResume()????Activity,???????

36
4.3 Activity????

• ??????
• ??IDA???????Dev Tools ? Development Settings ?
  Immediately destroy activities (IDA)???IDA

37
4.3 Activity????

• ??????
• ??IDA??????????????onSaveInstanceState()?
  onPause()? onStop()? onDestroy()? onCreate()?
  onStart()? onRestoreInstanceState()? onResume()
• ??onRestoreInstanceState()??Activity??????
• ???????????????????????

38
4.3 Activity????

• ??????
• ???????LogCat??
• ??ActivityLifeCycle
• ???????????????
• ???????????
• LogCat?????

39
4.3 Activity????

• ??????
• ????????onSaveInstanceState() ? onPause() ?
  onResume()
• ??onSaveInstanceState ()??Activity???
• ??onPause()???????
• ??onResume()????????

40
4.4 ????

• Android???????????LogCat?DevTools,??????
  ????????????
• 4.4.1 LogCat
• LogCat??????????????,??????Eclipse???????
• ???????????Dalvik??????????????ActivityManager???
  PackagerManager???Homeloader ???WindowsManager???A
  ndroid?????????????

41
4.4 ????

• 4.4.1 LogCat
• ????Window ? Show View ? Other
• ??Show View?????,???Andoird ? LogCat???LogCat

42
4.4 ????

• 4.4.1 LogCat
• LogCat???,????Eclipse?????

43
4.4 ????

• 4.4.1 LogCat
• LogCat?????????????????????? ,?????????
• V??(Verbose)?? D??(Debug)??
• I??(Info)?? W??(Warn)??
• E ??(Error)??

44
4.4 ????

• 4.4.1 LogCat
• ?LogCat?,?????????????????????,??????????????LogCa
  t???,??????????????????

45
4.4 ????

• 4.4.1 LogCat
• LogCat???????,???????-?,???????????????????
  ??????(Tag)??????????(Pid)?????(Level),???????????
  ?

46
4.4 ????

• 4.4.1 LogCat
• ??????
• ??android.util.Log?
• ??Log.v()? Log.d()? Log.i() ?Log.w() ?
  Log.e()?????????????
• ??????????,??????????????LogCat?
• ?????????????????
• ????????????
• Log.v()????????,Log.d()????????,Log.i()????????,
  Log.w()????????,Log.e()?????????

47
4.4 ????

• 4.4.1 LogCat
• ???Log????????

48
4.4 ????

• 4.4.1 LogCat
• ???5???android.util.Log?
• ?8?????????????LogCat??????????????,??????????????
  ??
• ?14?????????,Log.v()??????????????,?????????????
• ?15???18?????????????????????????

49
4.4 ????

• 4.4.1 LogCat
• LogCat???????
• LogCat????????????????????

50
4.4 ????

• 4.4.1 LogCat
• ?????
• ??
• ????????LogcatFilter
• ?????????LOGCAT

51
4.4 ????

• 4.4.1 LogCat
• LogCat????????
• ???????????,???????,?????LOGCAT,?????LogcatFilter?
  ??

52
4.4 ????

• 4.4.2 DevTools
• DevTools???????????
• ????????????????Development Settings?Exception
  Browser?Google Login Service?Instrumentation?Media
  Scanner?Package Browser?Pointer Location?Raw
  Image Viewer?Running processes?Terminal Emulator

53
4.4 ????

• 4.4.2 DevTools
• DevTools?????

54
4.4 ????

• 4.4.2 DevTools
• Development Settings
• Development Settings?????????????
• ?????????,?????????????
• ??????????

55
4.4 ????

• 4.4.2 DevTools
• Development Settings??

56
4.4 ????

• 4.4.2 DevTools

57
4.4 ????

• 4.4.2 DevTools
• Package Browser
• Package Browser?Android???????????,???????????Andr
  oid????????,?????????????????????ID????apk????????
  ???????
• ????????????Activity?Service?BroadcastReceiver?Pro
  vider?????

58
4.4 ????

• 4.4.2 DevTools
• Package Browser??ActivityLifeCycle???????

59
4.4 ????

• 4.4.2 DevTools
• Pointer Location
• Pointer Location??????????,????????X????Y???
• Pointer Location?????

60
4.4 ????

• 4.4.2 DevTools
• Running processes
• Running processes?????Android??????????,??????????
  ?,????????????????
• Andoird??????????????com.android.phone???????

61
4.4 ????

• 4.4.2 DevTools
• Andoird?????????????

• com.android.phone???????

62
4.4 ????

• 4.4.2 DevTools
• Terminal Emulator
• Terminal Emulator??????????Linux???????,????????,?
  ????????su??
• ??????root?????,????ADB??
• ???Terminal Emulator??????,??ls??,?????????????