android中dumpsys命令用法详解

在android手机上， 通过使用adb shell命令可以进入android系统的shell， 该shell除支持一些常用的标准命令之外，还支持一些和android系统相关的其他命令， 这些命令可以打印出系统当前的状态信息。 dumpsys就是这样一个命令。 

使用 adb shell 进入命令行， 敲入dumpsys， 打印出的信息超级多, 在我的nexus 5机器上，输出多达67000行。 首先从打印信息的开始部分看起：

Currently running services:
  SurfaceFlinger
  accessibility
  account
  activity
  alarm
  android.security.keystore
  appops
  appwidget
  assetatlas
  audio
  backup
  battery
  batterypropreg
  batterystats
  bluetooth_manager
  clipboard
  commontime_management
  connectivity
  consumer_ir
  content
  country_detector
  cpuinfo
  dbinfo
  device_policy
  devicestoragemonitor
  diskstats
  display
  display.qservice
  dreams
  drm.drmManager
  dropbox
  entropy
  gfxinfo
  hardware
  input
  input_method
  iphonesubinfo
  isms
  location
  lock_settings
  media.audio_flinger
  media.audio_policy
  media.camera
  media.player
  media_router
  meminfo
  mount
  netpolicy
  netstats
  network_management
  nfc
  notification
  package
  permission
  phone
  power
  print
  procstats
  samplingprofiler
  scheduling_policy
  search
  sensorservice
  serial
  servicediscovery
  simphonebook
  sip
  statusbar
  telephony.registry
  textservices
  uimode
  updatelock
  usagestats
  usb
  user
  vibrator
  wallpaper
  wifi
  wifip2p
  window

由此可知，该命令打印出的是系统当前的所有正在运行的服务的信息。从中可以看到我们常见的一些服务。 activity表示的是ActivityManagerService,用于管理应用程序的四大组件， appops表示的是AppOpsManagerService, 用于管理和配置权限。window表示的是WindowManagerService, 用于管理系统中的窗口， account表示的是AccountManagerService，用于管理系统中的账户信息。

在输出信息中， 紧接着的是每个服务当前的详细状态信息，每个服务的状态信息一般都比较多， 下面列举一个信息较少的服务信息：

-------------------------------------------------------------------------------
DUMP OF SERVICE accessibility:
ACCESSIBILITY MANAGER (dumpsys accessibility)

User state[attributes:{id=0, currentUser=true, accessibilityEnabled=false, touchExplorationEnabled=false, displayMagnificationEnabled=false}
           services:{}]

-------------------------------------------------------------------------------

每个服务信息之间使用横线间隔。

在开发过程中， 使用dumpsys的最常用的用途是查看ActivityManagerService服务的信息。 下面重点分析ActivityManagerService。 该服务的信息从下面一行开始:

-------------------------------------------------------------------------------
DUMP OF SERVICE activity:

我们知道android应用程序的四大组件中有三个是由intent来驱动的。所以在 ActivityManagerService的信息中，专门有一部分来记录当前待处理的Intent， 称为pending intent 。格式如下：

ACTIVITY MANAGER PENDING INTENTS (dumpsys activity intents)
  * PendingIntentRecord{65ced5f0 com.baidu.BaiduMap broadcastIntent}
    uid=10084 packageName=com.baidu.BaiduMap type=broadcastIntent flags=0x0
    requestIntent=act=com.baidu.locTest.LocationServer4.1.8
    sent=true canceled=false
  * PendingIntentRecord{66412b40 com.android.phone broadcastIntent}
    uid=1001 packageName=com.android.phone type=broadcastIntent flags=0x0
    requestIntent=act=com.android.phone.ACTION_CALL_BACK_FROM_NOTIFICATION dat=tel:153%201571%209213 cmp=com.android.phone/.PhoneGlobals$NotificationBroadcastReceiver

直接在shell中键入dumpsys activity intents， 会直接得到这些信息。 每个待处理的intent在 ActivityManagerService内部使用一个PendingIntentRecord对象表示， 并且会显示出所在应用的包名， 并且会指定该intent是用来发送广播， 启动activity或是启动service。

下面的信息是系统中的broadcast receiver的状态信息， 从下面一行开始：

-------------------------------------------------------------------------------
ACTIVITY MANAGER BROADCAST STATE (dumpsys activity broadcasts)

直接在shell中键入umpsys activity broadcasts, 会直接得到这部分信息。

首先会列出系统中所有注册的广播接收者， 格式如下：

 Registered Receivers:
  * ReceiverList{660f2e40 857 com.android.systemui/10012/u-1 remote:660f2ca0}
    app=857:com.android.systemui/u0a12 pid=857 uid=10012 user=-1
    Filter #0: BroadcastFilter{660f2ea0}
      Action: "android.intent.action.SHOW_BRIGHTNESS_DIALOG"
  * ReceiverList{66045cf0 3867 com.meitu.meiyancamera:pushservice/10091/u0 remote:65e756c8}
    app=3867:com.meitu.meiyancamera:pushservice/u0a91 pid=3867 uid=10091 user=0
    Filter #0: BroadcastFilter{66045d50}
      Action: "android.net.conn.CONNECTIVITY_CHANGE"

之后列出的是位于前台的历史广播， 格式如下：

Historical broadcasts [foreground]:
  Historical Broadcast foreground #0:
    BroadcastRecord{65610478 u-1 android.intent.action.TIME_TICK} to user -1
    Intent { act=android.intent.action.TIME_TICK flg=0x50000014 (has extras) }
      extras: Bundle[{android.intent.extra.ALARM_COUNT=1}]
    caller=android null pid=-1 uid=1000
    dispatchClockTime=Tue Oct 07 10:53:00 GMT+08:00 2014
    dispatchTime=-14s534ms finishTime=-14s436ms
    resultTo=null resultCode=0 resultData=null
    resultAbort=false ordered=true sticky=false initialSticky=false
    nextReceiver=10 receiver=null
    Receiver #0: BroadcastFilter{6568af00 u0 ReceiverList{65692db8 748 system/1000/u0 local:65b2a730}}
    Receiver #1: BroadcastFilter{660c8768 u0 ReceiverList{660c81a8 857 com.android.systemui/10012/u0 remote:660c78c0}}
    Receiver #2: BroadcastFilter{65d2d230 u0 ReceiverList{65d2cb20 857 com.android.systemui/10012/u0 remote:65a8bb70}}
    Receiver #3: BroadcastFilter{65f042e8 u0 ReceiverList{65f04d90 857 com.android.systemui/10012/u0 remote:65f9f2c0}}
    Receiver #4: BroadcastFilter{65a9d5f0 u0 ReceiverList{65affbc8 857 com.android.systemui/10012/u0 remote:65b41d50}}
    Receiver #5: BroadcastFilter{6682be08 u0 ReceiverList{6682bda8 857 com.android.systemui/10012/u0 remote:665c2478}}
    Receiver #6: BroadcastFilter{667a6c48 u0 ReceiverList{6671f128 857 com.android.systemui/10012/u0 remote:662c4048}}
    Receiver #7: BroadcastFilter{66901318 u0 ReceiverList{66949870 11260 com.youku.phone:MMS/10080/u0 remote:6695e528}}
    Receiver #8: BroadcastFilter{663a4b60 u0 ReceiverList{663a5148 857 com.android.systemui/10012/u0 remote:663c3530}}
    Receiver #9: BroadcastFilter{6633df98 u0 ReceiverList{6633f628 857 com.android.systemui/10012/u0 remote:66370860}}

然后是位于后台的历史广播，格式如下：

  Historical broadcasts [background]:
  Historical Broadcast background #0:
    BroadcastRecord{66430db0 u0 cn.etouch.ecalendar_CN.ETOUCH.ECALENDAR.WEATHER_HAS_UPDATE} to user 0
    Intent { act=cn.etouch.ecalendar_CN.ETOUCH.ECALENDAR.WEATHER_HAS_UPDATE flg=0x10 (has extras) }
      extras: Bundle[mParcelledData.dataSize=44]
    caller=cn.etouch.ecalendar 3036:cn.etouch.ecalendar:remote/u0a140 pid=3036 uid=10140
    dispatchClockTime=Tue Oct 07 10:53:00 GMT+08:00 2014
    dispatchTime=-14s475ms finishTime=-14s400ms
    resultTo=null resultCode=0 resultData=null
    nextReceiver=5 receiver=null
    Receiver #0: ResolveInfo{66335e40 cn.etouch.ecalendar/.widget.myWidget_weather p=1000 m=0x108000}
      priority=1000 preferredOrder=0 match=0x108000 specificIndex=-1 isDefault=false
      ActivityInfo:
        name=cn.etouch.ecalendar.widget.myWidget_weather
        packageName=cn.etouch.ecalendar
        labelRes=0x7f06016c nonLocalizedLabel=null icon=0x0
        enabled=true exported=true processName=cn.etouch.ecalendar
        taskAffinity=cn.etouch.ecalendar targetActivity=null
        ApplicationInfo:
          packageName=cn.etouch.ecalendar
          labelRes=0x7f060042 nonLocalizedLabel=null icon=0x7f0200c5
          className=cn.etouch.ecalendar.common.ApplicationManager
          processName=cn.etouch.ecalendar
          taskAffinity=cn.etouch.ecalendar
          uid=10140 flags=0x88be44 theme=0x7f0a0029
          requiresSmallestWidthDp=0 compatibleWidthLimitDp=0 largestWidthLimitDp=0
          sourceDir=/data/app/cn.etouch.ecalendar-1.apk
          seinfo=default
          dataDir=/data/data/cn.etouch.ecalendar
          enabled=true targetSdkVersion=11
          supportsRtl=false

下面是provider相关的信息， 格式如下：

-------------------------------------------------------------------------------
ACTIVITY MANAGER CONTENT PROVIDERS (dumpsys activity providers)
  Published single-user content providers (by class):
  * ContentProviderRecord{65cd5f60 u0 com.redbend.vdmc/com.redbend.others.NodeProvider}
    package=com.redbend.vdmc process=com.redbend.vdmc
    proc=ProcessRecord{65d540d8 1018:com.redbend.vdmc/1001}
    uid=1001 provider=android.content.ContentProviderProxy@658b6690
    singleton=true
    authority=com.lge.node
  * ContentProviderRecord{65d1b150 u0 com.android.phone/.IccProvider}
    package=com.android.phone process=com.android.phone
    proc=ProcessRecord{65fe2488 1000:com.android.phone/1001}
    uid=1001 provider=android.content.ContentProviderProxy@660cbf38
    singleton=true
    authority=icc
    isSyncable=false multiprocess=true initOrder=0

直接在命令行键入dumpsys activity providers，可以直接得到provider相关的信息。由输出信息可知， 在AtivityManagerService中，一个provider组件使用一个ContentProviderRecord对象表示。

服务（Service）相关的信息如下：

-------------------------------------------------------------------------------
ACTIVITY MANAGER SERVICES (dumpsys activity services)
  User 0 active services:
  * ServiceRecord{660da0f0 u0 com.android.bluetooth/.hid.HidService}
    intent={act=android.bluetooth.IBluetoothInputDevice cmp=com.android.bluetooth/.hid.HidService}
    packageName=com.android.bluetooth
    processName=com.android.bluetooth
    baseDir=/system/app/Bluetooth.apk
    dataDir=/data/data/com.android.bluetooth
    app=null
    createTime=-1d16h27m16s523ms startingBgTimeout=--
    lastActivity=-17h20m54s385ms restartTime=-- createdFromFg=false
    Bindings:
    * IntentBindRecord{660da3e0}:
      intent={act=android.bluetooth.IBluetoothInputDevice cmp=com.android.bluetooth/.hid.HidService}
      binder=null
      requested=false received=false hasBound=false doRebind=false

在shell中直接键入dumpsys activity services命令， 可以直接得到Service信息。

Activity相关的信息格式如下：

-------------------------------------------------------------------------------
ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)
  Stack #0:
    Task id #1
    * TaskRecord{65cc6860 #1 A=com.google.android.googlequicksearchbox U=0 sz=1}
      numActivities=1 rootWasReset=true userId=0 mTaskType=1 numFullscreen=1 mOnTopOfHome=true
      affinity=com.google.android.googlequicksearchbox
      intent={act=android.intent.action.MAIN cat=[android.intent.category.HOME] flg=0x10600000 cmp=com.google.android.googlequicksearchbox/com.google.android.launcher.GEL}
      realActivity=com.google.android.googlequicksearchbox/com.google.android.launcher.GEL
      Activities=[ActivityRecord{66020ee8 u0 com.google.android.googlequicksearchbox/com.google.android.launcher.GEL t1}]
      askedCompatMode=false
      lastThumbnail=android.graphics.Bitmap@6653bf90 lastDescription=null
      lastActiveTime=144235207 (inactive for 1424s)
      * Hist #0: ActivityRecord{66020ee8 u0 com.google.android.googlequicksearchbox/com.google.android.launcher.GEL t1}
          packageName=com.google.android.googlequicksearchbox processName=com.google.android.googlequicksearchbox
          launchedFromUid=0 launchedFromPackage=null userId=0
          app=ProcessRecord{66105ac8 1058:com.google.android.googlequicksearchbox/u0a19}
          Intent { act=android.intent.action.MAIN cat=[android.intent.category.HOME] flg=0x10000000 cmp=com.google.android.googlequicksearchbox/com.google.android.launcher.GEL }
          frontOfTask=true task=TaskRecord{65cc6860 #1 A=com.google.android.googlequicksearchbox U=0 sz=1}
          taskAffinity=com.google.android.googlequicksearchbox
          realActivity=com.google.android.googlequicksearchbox/com.google.android.launcher.GEL
          baseDir=/system/priv-app/Velvet.apk
          dataDir=/data/user/0/com.google.android.googlequicksearchbox
          stateNotNeeded=true componentSpecified=false mActivityType=1
          compat={480dpi} labelRes=0x7f0a04c5 icon=0x7f030002 theme=0x7f0e000d
          config={1.0 460mcc1mnc zh_CN ldltr sw360dp w360dp h567dp 480dpi nrml port finger -keyb/v/h -nav/h s.11}
          launchFailed=false launchCount=0 lastLaunchTime=-17h20m56s529ms
          haveState=true icicle=Bundle[mParcelledData.dataSize=12720]
          state=STOPPED stopped=true delayedResume=false finishing=false
          keysPaused=false inHistory=true visible=false sleeping=true idle=true
          fullscreen=true noDisplay=false immersive=false launchMode=2
          frozenBeforeDestroy=false thumbnailNeeded=false forceNewConfig=false
          mActivityType=HOME_ACTIVITY_TYPE
          thumbHolder: 65cc6860 bm=android.graphics.Bitmap@6653bf90 desc=null
          waitingVisible=false nowVisible=false lastVisibleTime=-21m53s598ms
    Task id #24
    * TaskRecord{667de460 #24 A=com.android.systemui U=0 sz=1}
      numActivities=1 rootWasReset=false userId=0 mTaskType=2 numFullscreen=1 mOnTopOfHome=true
      affinity=com.android.systemui
      intent={act=com.android.systemui.recent.action.TOGGLE_RECENTS flg=0x10c00000 cmp=com.android.systemui/.recent.RecentsActivity}
      realActivity=com.android.systemui/.recent.RecentsActivity
      Activities=[ActivityRecord{6561e970 u0 com.android.systemui/.recent.RecentsActivity t24}]
      askedCompatMode=false
      lastThumbnail=android.graphics.Bitmap@662b3118 lastDescription=null
      lastActiveTime=87755110 (inactive for 57904s)
      * Hist #0: ActivityRecord{6561e970 u0 com.android.systemui/.recent.RecentsActivity t24}
          packageName=com.android.systemui processName=com.android.systemui
          launchedFromUid=10012 launchedFromPackage=com.android.systemui userId=0
          app=ProcessRecord{6602d698 857:com.android.systemui/u0a12}
          Intent { act=com.android.systemui.recent.action.TOGGLE_RECENTS flg=0x10800000 cmp=com.android.systemui/.recent.RecentsActivity }
          frontOfTask=true task=TaskRecord{667de460 #24 A=com.android.systemui U=0 sz=1}
          taskAffinity=com.android.systemui
          realActivity=com.android.systemui/.recent.RecentsActivity
          baseDir=/system/priv-app/SystemUI.apk
          dataDir=/data/data/com.android.systemui
          stateNotNeeded=false componentSpecified=true mActivityType=2
          compat={480dpi} labelRes=0x7f0a0080 icon=0x10804a5 theme=0x7f0e0000
          config={1.0 460mcc1mnc zh_CN ldltr sw360dp w360dp h567dp 480dpi nrml port finger -keyb/v/h -nav/h s.9}
          launchFailed=false launchCount=0 lastLaunchTime=-9h59m21s658ms
          haveState=true icicle=Bundle[mParcelledData.dataSize=44]
          state=STOPPED stopped=true delayedResume=false finishing=false
          keysPaused=false inHistory=true visible=false sleeping=true idle=true
          fullscreen=true noDisplay=false immersive=false launchMode=3
          frozenBeforeDestroy=false thumbnailNeeded=false forceNewConfig=false
          mActivityType=RECENTS_ACTIVITY_TYPE
          thumbHolder: 667de460 bm=android.graphics.Bitmap@662b3118 desc=null
          waitingVisible=false nowVisible=false lastVisibleTime=-7h8m31s600ms

    Running activities (most recent first):
      TaskRecord{65cc6860 #1 A=com.google.android.googlequicksearchbox U=0 sz=1}
        Run #1: ActivityRecord{66020ee8 u0 com.google.android.googlequicksearchbox/com.google.android.launcher.GEL t1}
      TaskRecord{667de460 #24 A=com.android.systemui U=0 sz=1}
        Run #0: ActivityRecord{6561e970 u0 com.android.systemui/.recent.RecentsActivity t24}

    mLastPausedActivity: ActivityRecord{66020ee8 u0 com.google.android.googlequicksearchbox/com.google.android.launcher.GEL t1}

在shell中直接键入dumpsys activity activities, 可以直接得到activity的相关信息。

和其他组件相比， Activity的管理比较特殊。 Activity是以栈的形式管理的， 每个栈中存在若干个任务（task）， 每个任务又由若干个Activity组成。

上面简单介绍了ActivityManagerService中的四大组件相关的信息。 关于其他服务中的信息， 由于信息量太大， 无法一一介绍， 请读者自行查看。