Android中dumpsys命令用法简单介绍
在Android手机上，通过使用adbshell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adbshell进入命令行，敲入dumpsys，打印出的信息超级多,在我的nexus5机器上，输出多达67000行。首先从打印信息的开始部分看起：
Currentlyrunningservices: 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：
-------------------------------------------------------------------------------
DUMPOFSERVICEaccessibility:
ACCESSIBILITYMANAGER(dumpsysaccessibility)
Userstate[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:
------------------------------------------------------------------------------- DUMPOFSERVICEactivity:
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pendingintent。格式如下：
ACTIVITYMANAGERPENDINGINTENTS(dumpsysactivityintents)
*PendingIntentRecord{65ced5f0com.baidu.BaiduMapbroadcastIntent}
uid=10084packageName=com.baidu.BaiduMaptype=broadcastIntentflags=0x0
requestIntent=act=com.baidu.locTest.LocationServer4.1.8
sent=truecanceled=false
*PendingIntentRecord{66412b40com.android.phonebroadcastIntent}
uid=1001packageName=com.android.phonetype=broadcastIntentflags=0x0
requestIntent=act=com.android.phone.ACTION_CALL_BACK_FROM_NOTIFICATIONdat=tel:153%201571%209213cmp=com.android.phone/.PhoneGlobals$NotificationBroadcastReceiver
直接在shell中键入dumpsysactivityintents，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broadcastreceiver的状态信息，从下面一行开始：
------------------------------------------------------------------------------- ACTIVITYMANAGERBROADCASTSTATE(dumpsysactivitybroadcasts)
直接在shell中键入umpsysactivitybroadcasts,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：
RegisteredReceivers:
*ReceiverList{660f2e40857com.android.systemui/10012/u-1remote:660f2ca0}
app=857:com.android.systemui/u0a12pid=857uid=10012user=-1
Filter#0:BroadcastFilter{660f2ea0}
Action:"android.intent.action.SHOW_BRIGHTNESS_DIALOG"
*ReceiverList{66045cf03867com.meitu.meiyancamera:pushservice/10091/u0remote:65e756c8}
app=3867:com.meitu.meiyancamera:pushservice/u0a91pid=3867uid=10091user=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：
Historicalbroadcasts[foreground]:
HistoricalBroadcastforeground#0:
BroadcastRecord{65610478u-1android.intent.action.TIME_TICK}touser-1
Intent{act=android.intent.action.TIME_TICKflg=0x50000014(hasextras)}
extras:Bundle[{android.intent.extra.ALARM_COUNT=1}]
caller=androidnullpid=-1uid=1000
dispatchClockTime=TueOct0710:53:00GMT+08:002014
dispatchTime=-14s534msfinishTime=-14s436ms
resultTo=nullresultCode=0resultData=null
resultAbort=falseordered=truesticky=falseinitialSticky=false
nextReceiver=10receiver=null
Receiver#0:BroadcastFilter{6568af00u0ReceiverList{65692db8748system/1000/u0local:65b2a730}}
Receiver#1:BroadcastFilter{660c8768u0ReceiverList{660c81a8857com.android.systemui/10012/u0remote:660c78c0}}
Receiver#2:BroadcastFilter{65d2d230u0ReceiverList{65d2cb20857com.android.systemui/10012/u0remote:65a8bb70}}
Receiver#3:BroadcastFilter{65f042e8u0ReceiverList{65f04d90857com.android.systemui/10012/u0remote:65f9f2c0}}
Receiver#4:BroadcastFilter{65a9d5f0u0ReceiverList{65affbc8857com.android.systemui/10012/u0remote:65b41d50}}
Receiver#5:BroadcastFilter{6682be08u0ReceiverList{6682bda8857com.android.systemui/10012/u0remote:665c2478}}
Receiver#6:BroadcastFilter{667a6c48u0ReceiverList{6671f128857com.android.systemui/10012/u0remote:662c4048}}
Receiver#7:BroadcastFilter{66901318u0ReceiverList{6694987011260com.youku.phone:MMS/10080/u0remote:6695e528}}
Receiver#8:BroadcastFilter{663a4b60u0ReceiverList{663a5148857com.android.systemui/10012/u0remote:663c3530}}
Receiver#9:BroadcastFilter{6633df98u0ReceiverList{6633f628857com.android.systemui/10012/u0remote:66370860}}
然后是位于后台的历史广播，格式如下：
Historicalbroadcasts[background]:
HistoricalBroadcastbackground#0:
BroadcastRecord{66430db0u0cn.etouch.ecalendar_CN.ETOUCH.ECALENDAR.WEATHER_HAS_UPDATE}touser0
Intent{act=cn.etouch.ecalendar_CN.ETOUCH.ECALENDAR.WEATHER_HAS_UPDATEflg=0x10(hasextras)}
extras:Bundle[mParcelledData.dataSize=44]
caller=cn.etouch.ecalendar3036:cn.etouch.ecalendar:remote/u0a140pid=3036uid=10140
dispatchClockTime=TueOct0710:53:00GMT+08:002014
dispatchTime=-14s475msfinishTime=-14s400ms
resultTo=nullresultCode=0resultData=null
nextReceiver=5receiver=null
Receiver#0:ResolveInfo{66335e40cn.etouch.ecalendar/.widget.myWidget_weatherp=1000m=0x108000}
priority=1000preferredOrder=0match=0x108000specificIndex=-1isDefault=false
ActivityInfo:
name=cn.etouch.ecalendar.widget.myWidget_weather
packageName=cn.etouch.ecalendar
labelRes=0x7f06016cnonLocalizedLabel=nullicon=0x0
enabled=trueexported=trueprocessName=cn.etouch.ecalendar
taskAffinity=cn.etouch.ecalendartargetActivity=null
ApplicationInfo:
packageName=cn.etouch.ecalendar
labelRes=0x7f060042nonLocalizedLabel=nullicon=0x7f0200c5
className=cn.etouch.ecalendar.common.ApplicationManager
processName=cn.etouch.ecalendar
taskAffinity=cn.etouch.ecalendar
uid=10140flags=0x88be44theme=0x7f0a0029
requiresSmallestWidthDp=0compatibleWidthLimitDp=0largestWidthLimitDp=0
sourceDir=/data/app/cn.etouch.ecalendar-1.apk
seinfo=default
dataDir=/data/data/cn.etouch.ecalendar
enabled=truetargetSdkVersion=11
supportsRtl=false
下面是provider相关的信息，格式如下：
-------------------------------------------------------------------------------
ACTIVITYMANAGERCONTENTPROVIDERS(dumpsysactivityproviders)
Publishedsingle-usercontentproviders(byclass):
*ContentProviderRecord{65cd5f60u0com.redbend.vdmc/com.redbend.others.NodeProvider}
package=com.redbend.vdmcprocess=com.redbend.vdmc
proc=ProcessRecord{65d540d81018:com.redbend.vdmc/1001}
uid=1001provider=android.content.ContentProviderProxy@658b6690
singleton=true
authority=com.lge.node
*ContentProviderRecord{65d1b150u0com.android.phone/.IccProvider}
package=com.android.phoneprocess=com.android.phone
proc=ProcessRecord{65fe24881000:com.android.phone/1001}
uid=1001provider=android.content.ContentProviderProxy@660cbf38
singleton=true
authority=icc
isSyncable=falsemultiprocess=trueinitOrder=0
直接在命令行键入dumpsysactivityproviders，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：
-------------------------------------------------------------------------------
ACTIVITYMANAGERSERVICES(dumpsysactivityservices)
User0activeservices:
*ServiceRecord{660da0f0u0com.android.bluetooth/.hid.HidService}
intent={act=android.bluetooth.IBluetoothInputDevicecmp=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=-1d16h27m16s523msstartingBgTimeout=--
lastActivity=-17h20m54s385msrestartTime=--createdFromFg=false
Bindings:
*IntentBindRecord{660da3e0}:
intent={act=android.bluetooth.IBluetoothInputDevicecmp=com.android.bluetooth/.hid.HidService}
binder=null
requested=falsereceived=falsehasBound=falsedoRebind=false
在shell中直接键入dumpsysactivityservices命令，可以直接得到Service信息。
Activity相关的信息格式如下：
-------------------------------------------------------------------------------
ACTIVITYMANAGERACTIVITIES(dumpsysactivityactivities)
Stack#0:
Taskid#1
*TaskRecord{65cc6860#1A=com.google.android.googlequicksearchboxU=0sz=1}
numActivities=1rootWasReset=trueuserId=0mTaskType=1numFullscreen=1mOnTopOfHome=true
affinity=com.google.android.googlequicksearchbox
intent={act=android.intent.action.MAINcat=[android.intent.category.HOME]flg=0x10600000cmp=com.google.android.googlequicksearchbox/com.google.android.launcher.GEL}
realActivity=com.google.android.googlequicksearchbox/com.google.android.launcher.GEL
Activities=[ActivityRecord{66020ee8u0com.google.android.googlequicksearchbox/com.google.android.launcher.GELt1}]
askedCompatMode=false
lastThumbnail=android.graphics.Bitmap@6653bf90lastDescription=null
lastActiveTime=144235207(inactivefor1424s)
*Hist#0:ActivityRecord{66020ee8u0com.google.android.googlequicksearchbox/com.google.android.launcher.GELt1}
packageName=com.google.android.googlequicksearchboxprocessName=com.google.android.googlequicksearchbox
launchedFromUid=0launchedFromPackage=nulluserId=0
app=ProcessRecord{66105ac81058:com.google.android.googlequicksearchbox/u0a19}
Intent{act=android.intent.action.MAINcat=[android.intent.category.HOME]flg=0x10000000cmp=com.google.android.googlequicksearchbox/com.google.android.launcher.GEL}
frontOfTask=truetask=TaskRecord{65cc6860#1A=com.google.android.googlequicksearchboxU=0sz=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=truecomponentSpecified=falsemActivityType=1
compat={480dpi}labelRes=0x7f0a04c5icon=0x7f030002theme=0x7f0e000d
config={1.0460mcc1mnczh_CNldltrsw360dpw360dph567dp480dpinrmlportfinger-keyb/v/h-nav/hs.11}
launchFailed=falselaunchCount=0lastLaunchTime=-17h20m56s529ms
haveState=trueicicle=Bundle[mParcelledData.dataSize=12720]
state=STOPPEDstopped=truedelayedResume=falsefinishing=false
keysPaused=falseinHistory=truevisible=falsesleeping=trueidle=true
fullscreen=truenoDisplay=falseimmersive=falselaunchMode=2
frozenBeforeDestroy=falsethumbnailNeeded=falseforceNewConfig=false
mActivityType=HOME_ACTIVITY_TYPE
thumbHolder:65cc6860bm=android.graphics.Bitmap@6653bf90desc=null
waitingVisible=falsenowVisible=falselastVisibleTime=-21m53s598ms
Taskid#24
*TaskRecord{667de460#24A=com.android.systemuiU=0sz=1}
numActivities=1rootWasReset=falseuserId=0mTaskType=2numFullscreen=1mOnTopOfHome=true
affinity=com.android.systemui
intent={act=com.android.systemui.recent.action.TOGGLE_RECENTSflg=0x10c00000cmp=com.android.systemui/.recent.RecentsActivity}
realActivity=com.android.systemui/.recent.RecentsActivity
Activities=[ActivityRecord{6561e970u0com.android.systemui/.recent.RecentsActivityt24}]
askedCompatMode=false
lastThumbnail=android.graphics.Bitmap@662b3118lastDescription=null
lastActiveTime=87755110(inactivefor57904s)
*Hist#0:ActivityRecord{6561e970u0com.android.systemui/.recent.RecentsActivityt24}
packageName=com.android.systemuiprocessName=com.android.systemui
launchedFromUid=10012launchedFromPackage=com.android.systemuiuserId=0
app=ProcessRecord{6602d698857:com.android.systemui/u0a12}
Intent{act=com.android.systemui.recent.action.TOGGLE_RECENTSflg=0x10800000cmp=com.android.systemui/.recent.RecentsActivity}
frontOfTask=truetask=TaskRecord{667de460#24A=com.android.systemuiU=0sz=1}
taskAffinity=com.android.systemui
realActivity=com.android.systemui/.recent.RecentsActivity
baseDir=/system/priv-app/SystemUI.apk
dataDir=/data/data/com.android.systemui
stateNotNeeded=falsecomponentSpecified=truemActivityType=2
compat={480dpi}labelRes=0x7f0a0080icon=0x10804a5theme=0x7f0e0000
config={1.0460mcc1mnczh_CNldltrsw360dpw360dph567dp480dpinrmlportfinger-keyb/v/h-nav/hs.9}
launchFailed=falselaunchCount=0lastLaunchTime=-9h59m21s658ms
haveState=trueicicle=Bundle[mParcelledData.dataSize=44]
state=STOPPEDstopped=truedelayedResume=falsefinishing=false
keysPaused=falseinHistory=truevisible=falsesleeping=trueidle=true
fullscreen=truenoDisplay=falseimmersive=falselaunchMode=3
frozenBeforeDestroy=falsethumbnailNeeded=falseforceNewConfig=false
mActivityType=RECENTS_ACTIVITY_TYPE
thumbHolder:667de460bm=android.graphics.Bitmap@662b3118desc=null
waitingVisible=falsenowVisible=falselastVisibleTime=-7h8m31s600ms
Runningactivities(mostrecentfirst):
TaskRecord{65cc6860#1A=com.google.android.googlequicksearchboxU=0sz=1}
Run#1:ActivityRecord{66020ee8u0com.google.android.googlequicksearchbox/com.google.android.launcher.GELt1}
TaskRecord{667de460#24A=com.android.systemuiU=0sz=1}
Run#0:ActivityRecord{6561e970u0com.android.systemui/.recent.RecentsActivityt24}
mLastPausedActivity:ActivityRecord{66020ee8u0com.google.android.googlequicksearchbox/com.google.android.launcher.GELt1}
在shell中直接键入dumpsysactivityactivities,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。
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