Android Event Log 日志是极好的，可以及时记录程序的运行状态信息，和出现异常的时候的异常状态信息，是程序运行的后知后觉的晴雨表。它可以给我们查找问题指明方向，带来查找问题的便利。因此，可以读懂Android Event Log显得很重要。为了让您可以懂它，使用它，我来做一个小小总结。
event log: 09-06 16:18:46.197 1632 2405 I am_proc_start: [0,4394,1000,com.android.usbsecurity,broadcast,com.android.usbsecurity/.UsbSecurityReceiver]
log-tag tag-values部分是下面这部分： am_proc_start: [0,4394,1000,com.android.usbsecurity,broadcast,com.android.usbsecurity/.UsbSecurityReceiver] 根据am_proc_start这个关键字，在/system/etc/event-log-tags文件或在…/server/am/EventLogTags.logtags中找到它的定义： 30014 am_proc_start (User|1|5),(PID|1|5),(UID|1|5),(Process Name|3),(Type|3),(Component|3)
根据上面这个定义我们就知道event log的tag-values这个值的含义了，放在一起对比下： am_proc_start (User|1|5),(PID|1|5),(UID|1|5),(Process Name|3),(Type|3),(Component|3) am_proc_start: [0,4394,1000,com.android.usbsecurity,broadcast,com.android.usbsecurity/.UsbSecurityReceiver]
含义： 进程启动: pid=4394,uid=1000, 进程名=com.android.usbsecurity, 类型broadcast,相应组件=com.android.usbsecurity/.UsbSecurityReceiver
1 Android Ecent log 常用tag说明 adb logcat -b events > eventlog 1.1 查看前台的activity adb logcat -b events -s am_on_resume_called Android R 11 screen_toggled：屏幕电源状态信息 其中 0 表示屏幕关闭，1 表示屏幕打开，2 表示已锁屏。 10-18 15:05:04.383 992 992 I screen_toggled: 1 10-18 15:05:07.010 992 992 I screen_toggled: 0 10-18 15:23:15.063 992 992 I screen_toggled: 1 10-18 15:23:25.684 992 992 I screen_toggled: 0 10-18 15:36:31.623 992 992 I screen_toggled: 1 10-18 15:36:37.660 3283 3283 I screen_toggled: 2 状态栏没有下拉： 04-27 15:20:57.639 1098 6137 I notification_panel_hidden: 下拉状态栏完全展开： 04-27 15:21:45.970 1098 11208 I notification_panel_revealed: 5 Back按键： KEYCODE_BACK = 4 04-27 15:28:23.540 1393 1393 I sysui_multi_action: [757,931,758,4,759,4,932,0,933,0] // 最后的0是按下 04-27 15:28:23.542 1098 5988 I sysui_multi_action: [757,803,799,key_back_down,802,1] // 按下 04-27 15:28:23.600 1393 1393 I sysui_multi_action: [757,931,758,4,759,4,932,0,933,1] // 最后的1是抬起 04-27 15:28:23.605 1098 5988 I sysui_multi_action: [757,803,799,key_back_up,802,1] // 抬起 HOME按键： KEYCODE_BACK = 3 04-27 15:24:04.764 1393 1393 I sysui_multi_action: [757,931,758,4,759,3,932,0,933,0] // 按下 04-27 15:24:04.853 1393 1393 I sysui_multi_action: [757,931,758,4,759,3,932,0,933,1] // 抬起 Power按键： 04-27 21:27:05.063 1098 1315 I intercept_power: [ACTION_DOWN,1,0] // 按下 04-27 21:27:05.081 1098 1098 I screen_toggled: 1 // 屏幕打开 04-27 21:27:05.164 1098 1315 I intercept_power: [ACTION_UP,1,0] // 抬起 2 Notification Event Log解析
notification_enqueue notification_cancel notification_canceled notification_cancel_all notification_panel_revealed notification_panel_hidden notification_visibility_changed notification_expansion notification_clicked notification_action_clicked notification_visibility notification_alert notification_autogrouped notification_unautogrouped Notification cancellation reasons Notification_Importance 链接如下：Notification EventLog解析常用如下 Notification Event Log介绍 1.1 最常用Notification Event Log介绍 notification_enqueue /** 2750 notification_enqueue (uid|1|5),(pid|1|5),(pkg|3),(id|1|5),(tag|3),(userid|1|5),(notification|3),(status|1) / public static final int NOTIFICATION_ENQUEUE = 2750; e.g.12-02 19:29:24.709 1000 24263 24263 I notification_enqueue: [10179,26715,com.tencent.mm,2141405575,NULL,0,Notification(channel=null pri=2 contentView=null vibrate=null sound=null tick defaults=0x0 flags=0x101 color=0x00000000 category=msg actions=2 vis=PRIVATE),0] notification_canceled /* 2751 notification_cancel (uid|1|5),(pid|1|5),(pkg|3),(id|1|5),(tag|3),(userid|1|5),(required_flags|1),(forbidden_flags|1),(reason|1|5),(listener|3) */ public static final int NOTIFICATION_CANCEL = 2751;
56186:11-13 22:11:50.769 1000 2030 2030 I notification_cancel: [10103,12098,com.google.android.gm,-539083030,gig:2140555145:^sq_ig_i_personal,0,0,0,12,NULL]
notification_visibility /** 27531 notification_visibility (key|3),(visibile|1),(lifespan|1),(freshness|1),(exposure|1),(rank|1) */ public static final int NOTIFICATION_VISIBILITY = 27531;
e.g.11-20 20:49:31.607 1000 1891 2452 I notification_visibility: [0|com.facebook.orca|20001|null|10169,1,221395,220539,0,2] visibile : 当前notification是否可见 1 可见 0 不可见 lifespan : System.currentTimeMillis() - mCreationTimeMs freshness : System.currentTimeMillis() - mUpdateTimeMs exposure : 曝光时间 rank : 排序 0位于顶部第一， 不同notification 相同rank则为折叠/更新了
notification_alert /** 27532 notification_alert (key|3),(buzz|1),(beep|1),(blink|1) */ public static final int NOTIFICATION_ALERT = 27532;
01-03 11:43:09.552 1355 1398 I notification_alert: [0|com.tencent.tim|121|null|10159,1,0,1]
notification_panel_revealed /** 27500 notification_panel_revealed (items|1) */ public static final int NOTIFICATION_PANEL_REVEALED = 27500;
11-20 20:49:31.105 1000 1891 3313 I notification_panel_revealed: 3 当前通知面板/浮动通知面板显示有几个Notification 更新/折叠算一个 浮动通知面板通常==1 notification_panel_hidden /** 27501 notification_panel_hidden */ public static final int NOTIFICATION_PANEL_HIDDEN = 27501;
01-03 11:26:11.262 1355 4180 I notification_panel_hidden: 通知面板/浮动通知面板 收起 wm_create_activity wm_pause_activity wm_on_restart_called 3 Android EventLog 带你看看Android手机对应的日志 3.1 Acrivity Manager 2719 configuration_changed (config mask|1|5) 2721 cpu (total|1|6),(user|1|6),(system|1|6),(iowait|1|6),(irq|1|6),(softirq|1|6)
ActivityManagerService.systemReady() starts: 3040 boot_progress_ams_ready (time|2|3)
ActivityManagerService calls enableScreenAfterBoot(): 3050 boot_progress_enable_screen (time|2|3)
Do not change these names without updating the checkin_events setting in google3/googledata/wireless/android/provisioning/gservices.config !! An activity is being finished: 30001 am_finish_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3),(Reason|3)
A task is being brought to the front of the screen: 30002 am_task_to_front (User|1|5),(Task|1|5)
An existing activity is being given a new intent: 30003 am_new_intent (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3),(Action|3),(MIME Type|3),(URI|3),(Flags|1|5)
A new task is being created: 30004 am_create_task (User|1|5),(Task ID|1|5)
A new activity is being created in an existing task: 30005 am_create_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3),(Action|3),(MIME Type|3),(URI|3),(Flags|1|5)
An activity has been resumed into the foreground but was not already running: 30006 am_restart_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3)
An activity has been resumed and is now in the foreground: 30007 am_resume_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3)
Application Not Responding 30008 am_anr (User|1|5),(pid|1|5),(Package Name|3),(Flags|1|5),(reason|3)
Activity launch time 30009 am_activity_launch_time (User|1|5),(Token|1|5),(Component Name|3),(time|2|3)
Application process bound to work 30010 am_proc_bound (User|1|5),(PID|1|5),(Process Name|3)
Application process died 30011 am_proc_died (User|1|5),(PID|1|5),(Process Name|3),(OomAdj|1|5),(ProcState|1|5)
The Activity Manager failed to pause the given activity. 30012 am_failed_to_pause (User|1|5),(Token|1|5),(Wanting to pause|3),(Currently pausing|3)
Attempting to pause the current activity 30013 am_pause_activity (User|1|5),(Token|1|5),(Component Name|3),(User Leaving|3)
Application process has been started 30014 am_proc_start (User|1|5),(PID|1|5),(UID|1|5),(Process Name|3),(Type|3),(Component|3)
An application process has been marked as bad 30015 am_proc_bad (User|1|5),(UID|1|5),(Process Name|3)
An application process that was bad is now marked as good 30016 am_proc_good (User|1|5),(UID|1|5),(Process Name|3)
Reporting to applications that memory is low 30017 am_low_memory (Num Processes|1|1)
An activity is being destroyed: 30018 am_destroy_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3),(Reason|3)
An activity has been relaunched, resumed, and is now in the foreground: 30019 am_relaunch_resume_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3)
An activity has been relaunched: 30020 am_relaunch_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3)
The activity’s onPause has been called. 30021 am_on_paused_called (User|1|5),(Component Name|3),(Reason|3)
The activity’s onResume has been called. 30022 am_on_resume_called (User|1|5),(Component Name|3),(Reason|3)
Kill a process to reclaim memory. 30023 am_kill (User|1|5),(PID|1|5),(Process Name|3),(OomAdj|1|5),(Reason|3)
Discard an undelivered serialized broadcast (timeout/ANR/crash) 30024 am_broadcast_discard_filter (User|1|5),(Broadcast|1|5),(Action|3),(Receiver Number|1|1),(BroadcastFilter|1|5) 30025 am_broadcast_discard_app (User|1|5),(Broadcast|1|5),(Action|3),(Receiver Number|1|1),(App|3)
A service is being created 30030 am_create_service (User|1|5),(Service Record|1|5),(Name|3),(UID|1|5),(PID|1|5)
A service is being destroyed 30031 am_destroy_service (User|1|5),(Service Record|1|5),(PID|1|5)
A process has crashed too many times, it is being cleared 30032 am_process_crashed_too_much (User|1|5),(Name|3),(PID|1|5)
An unknown process is trying to attach to the activity manager 30033 am_drop_process (PID|1|5)
A service has crashed too many times, it is being stopped 30034 am_service_crashed_too_much (User|1|5),(Crash Count|1|1),(Component Name|3),(PID|1|5)
A service is going to be restarted after its process went away 30035 am_schedule_service_restart (User|1|5),(Component Name|3),(Time|2|3)
A client was waiting for a content provider, but its process was lost 30036 am_provider_lost_process (User|1|5),(Package Name|3),(UID|1|5),(Name|3)
The activity manager gave up on a new process taking too long to start 30037 am_process_start_timeout (User|1|5),(PID|1|5),(UID|1|5),(Process Name|3)
Unhandled exception 30039 am_crash (User|1|5),(PID|1|5),(Process Name|3),(Flags|1|5),(Exception|3),(Message|3),(File|3),(Line|1|5)
Log.wtf() called 30040 am_wtf (User|1|5),(PID|1|5),(Process Name|3),(Flags|1|5),(Tag|3),(Message|3)
User switched 30041 am_switch_user (id|1|5)
Activity set to resumed 30043 am_set_resumed_activity (User|1|5),(Component Name|3),(Reason|3)
Stack focus 30044 am_focused_stack (User|1|5),(Display Id|1|5),(Focused Stack Id|1|5),(Last Focused Stack Id|1|5),(Reason|3)
Running pre boot receiver 30045 am_pre_boot (User|1|5),(Package|3)
Report collection of global memory state 30046 am_meminfo (Cached|2|2),(Free|2|2),(Zram|2|2),(Kernel|2|2),(Native|2|2)
Report collection of memory used by a process 30047 am_pss (Pid|1|5),(UID|1|5),(Process Name|3),(Pss|2|2),(Uss|2|2),(SwapPss|2|2),(Rss|2|2),(StatType|1|5),(ProcState|1|5),(TimeToCollect|2|2)
Attempting to stop an activity 30048 am_stop_activity (User|1|5),(Token|1|5),(Component Name|3)
The activity’s onStop has been called. 30049 am_on_stop_called (User|1|5),(Component Name|3),(Reason|3)
Report changing memory conditions (Values are ProcessStats.ADJ_MEM_FACTOR* constants) 30050 am_mem_factor (Current|1|5),(Previous|1|5)
UserState has changed 30051 am_user_state_changed (id|1|5),(state|1|5)
Note when any processes of a uid have started running 30052 am_uid_running (UID|1|5)
Note when all processes of a uid have stopped. 30053 am_uid_stopped (UID|1|5)
Note when the state of a uid has become active. 30054 am_uid_active (UID|1|5)
Note when the state of a uid has become idle (background check enforced). 30055 am_uid_idle (UID|1|5)
Note when a service is being forcibly stopped because its app went idle. 30056 am_stop_idle_service (UID|1|5),(Component Name|3)
The activity’s onCreate has been called. 30057 am_on_create_called (User|1|5),(Component Name|3),(Reason|3)
The activity’s onRestart has been called. 30058 am_on_restart_called (User|1|5),(Component Name|3),(Reason|3)
The activity’s onStart has been called. 30059 am_on_start_called (User|1|5),(Component Name|3),(Reason|3)
The activity’s onDestroy has been called. 30060 am_on_destroy_called (User|1|5),(Component Name|3),(Reason|3)
The activity’s onActivityResult has been called. 30062 am_on_activity_result_called (User|1|5),(Component Name|3),(Reason|3)
The task is being removed from its parent stack 30061 am_remove_task (Task ID|1|5), (Stack ID|1|5)
The task is being compacted 30063 am_compact (Pid|1|5),(Process Name|3),(Action|3),(BeforeRssTotal|2|2),(BeforeRssFile|2|2),(BeforeRssAnon|2|2),(BeforeRssSwap|2|2),(DeltaRssTotal|2|2),(DeltaRssFile|2|2),(DeltaRssAnon|2|2),(DeltaRssSwap|2|2),(Time|2|3),(LastAction|1|2),(LastActionTimestamp|2|3),(setAdj|1|2),(procState|1|2),(BeforeZRAMFree|2|2),(DeltaZRAMFree|2|2)
The activity’s onTopResumedActivityChanged(true) has been called. 30064 am_on_top_resumed_gained_called (User|1|5),(Component Name|3),(Reason|3)
The activity’s onTopResumedActivityChanged(false) has been called. 30065 am_on_top_resumed_lost_called (User|1|5),(Component Name|3),(Reason|3)
An activity been add into stopping list 30066 am_add_to_stopping (User|1|5),(Token|1|5),(Component Name|3),(Reason|3)
下面列举tag可能使用的部分场景：
am_low_memory：位于AMS.killAllBackgroundProcesses或者AMS.appDiedLocked，记录当前Lru进程队列长度。 am_pss：位于AMS.recordPssSampleLocked( am_meminfo：位于AMS.dumpApplicationMemoryUsage am_proc_start:位于AMS.startProcessLocked，启动进程 am_proc_bound:位于AMS.attachApplicationLocked am_kill: 位于ProcessRecord.kill，杀掉进程 am_anr: 位于AMS.appNotResponding am_crash:位于AMS.handleApplicationCrashInner am_wtf:位于AMS.handleApplicationWtf am_activity_launch_time：位于ActivityRecord.reportLaunchTimeLocked()，后面两个参数分别是thisTime和 totalTime. am_activity_fully_drawn_time:位于ActivityRecord.reportFullyDrawnLocked, 后面两个参数分别是thisTime和 totalTime am_broadcast_discard_filter:位于BroadcastQueue.logBroadcastReceiverDiscardLocked am_broadcast_discard_app:位于BroadcastQueue.logBroadcastReceiverDiscardLocked Activity生命周期相关的方法: am_on_resume_called: 位于AT.performResumeActivity am_on_paused_called: 位于AT.performPauseActivity, performDestroyActivity am_resume_activity: 位于AS.resumeTopActivityInnerLocked am_pause_activity: 位于AS.startPausingLocked am_finish_activity: 位于AS.finishActivityLocked, removeHistoryRecordsForAppLocked am_destroy_activity: 位于AS.destroyActivityLocked am_focused_activity: 位于AMS.setFocusedActivityLocked, clearFocusedActivity am_restart_activity: 位于ASS.realStartActivityLocked am_create_activity: 位于ASS.startActivityUncheckedLocked am_new_intent: 位于ASS.startActivityUncheckedLocked am_task_to_front: 位于AS.moveTaskToFrontLocked 3.2 Power & Battery
6# BatteryService.java 7# --------------------------- 82722 battery_level (level|1|6),(voltage|1|1),(temperature|1|1) 92723 battery_status (status|1|5),(health|1|5),(present|1|5),(plugged|1|5),(technology|3) 10# This is logged when battery goes from discharging to charging. 11# It lets us count the total amount of time between charges and the discharge level 122730 battery_discharge (duration|2|3),(minLevel|1|6),(maxLevel|1|6) 13 14 15# --------------------------- 16# PowerManagerService.java 17# --------------------------- 18# This is logged when the device is being forced to sleep (typically by 19# the user pressing the power button). 202724 power_sleep_requested (wakeLocksCleared|1|1) 21# This is logged when the screen on broadcast has completed 222725 power_screen_broadcast_send (wakelockCount|1|1) 23# This is logged when the screen broadcast has completed 242726 power_screen_broadcast_done (on|1|5),(broadcastDuration|2|3),(wakelockCount|1|1) 25# This is logged when the screen on broadcast has completed 262727 power_screen_broadcast_stop (which|1|5),(wakelockCount|1|1) 27# This is logged when the screen is turned on or off. 282728 power_screen_state (offOrOn|1|5),(becauseOfUser|1|5),(totalTouchDownTime|2|3),(touchCycles|1|1),(latency|1|3) 29# This is logged when the partial wake lock (keeping the device awake 30# regardless of whether the screen is off) is acquired or released. 312729 power_partial_wake_state (releasedorAcquired|1|5),(tag|3) 32# The device is being asked to go into a soft sleep (typically by the ungaze gesture). 33# It logs the time remaining before the device would’ve normally gone to sleep without the request. 342731 power_soft_sleep_requested (savedwaketimems|2) 35 36# 37# Leave IDs through 2739 for more power logs (2730 used by battery_discharge above)
部分含义：
battery_level: [19,3660,352] //剩余电量19%, 电池电压3.66v, 电池温度35.2℃ power_screen_state: [0,3,0,0] // 灭屏状态(0), 屏幕超时(3). 当然还有其他设备管理策略(1),其他理由都为用户行为(2) power_screen_state: [1,0,0,0] // 亮屏状态(1) 下面列举tag可能使用的部分场景： power_sleep_requested: 位于PMS.goToSleepNoUpdateLocked power_screen_state:位于Notifer.handleEarlyInteractiveChange, handleLateInteractiveChange 3.3 更多含义
42# DeviceStorageMonitorService.java 43# --------------------------- 44# File on cache partition was deleted 452748 cache_file_deleted (path|3) 46# Storage volume state and usable space in bytes 472749 storage_state (uuid|3),(old_state|1),(new_state|1),(usable|2),(total|2) 48 49 50# --------------------------- 51# NotificationManagerService.java 52# --------------------------- 53# when a NotificationManager.notify is called. status: 0=post, 1=update, 2=ignored 542750 notification_enqueue (uid|1|5),(pid|1|5),(pkg|3),(id|1|5),(tag|3),(userid|1|5),(notification|3),(status|1) 55# when someone tries to cancel a notification, the notification manager sometimes 56# calls this with flags too 572751 notification_cancel (uid|1|5),(pid|1|5),(pkg|3),(id|1|5),(tag|3),(userid|1|5),(required_flags|1),(forbidden_flags|1),(reason|1|5),(listener|3) 58# when someone tries to cancel all of the notifications for a particular package 592752 notification_cancel_all (uid|1|5),(pid|1|5),(pkg|3),(userid|1|5),(required_flags|1),(forbidden_flags|1),(reason|1|5),(listener|3) 60# when the notification panel is shown 61# Note: New tag range starts here since 2753+ have been used below. 6227500 notification_panel_revealed (items|1) 63# when the notification panel is hidden 6427501 notification_panel_hidden 65# when notifications are newly displayed on screen, or disappear from screen 6627510 notification_visibility_changed (newlyVisibleKeys|3),(noLongerVisibleKeys|3) 67# when notifications are expanded, or contracted 6827511 notification_expansion (key|3),(user_action|1),(expanded|1),(lifespan|1),(freshness|1),(exposure|1) 69# when a notification has been clicked 7027520 notification_clicked (key|3),(lifespan|1),(freshness|1),(exposure|1) 71# when a notification action button has been clicked 7227521 notification_action_clicked (key|3),(action_index|1),(lifespan|1),(freshness|1),(exposure|1) 73# when a notification has been canceled 7427530 notification_canceled (key|3),(reason|1),(lifespan|1),(freshness|1),(exposure|1),(listener|3) 75# replaces 27510 with a row per notification 7627531 notification_visibility (key|3),(visibile|1),(lifespan|1),(freshness|1),(exposure|1),(rank|1) 77# a notification emited noise, vibration, or light 7827532 notification_alert (key|3),(buzz|1),(beep|1),(blink|1) 79# a notification was added to a autogroup 8027533 notification_autogrouped (key|3) 81# notification was removed from an autogroup 82275534 notification_unautogrouped (key|3) 83 84# --------------------------- 85# Watchdog.java 86# --------------------------- 872802 watchdog (Service|3) 882803 watchdog_proc_pss (Process|3),(Pid|1|5),(Pss|1|2) 892804 watchdog_soft_reset (Process|3),(Pid|1|5),(MaxPss|1|2),(Pss|1|2),(Skip|3) 902805 watchdog_hard_reset (Process|3),(Pid|1|5),(MaxPss|1|2),(Pss|1|2) 912806 watchdog_pss_stats (EmptyPss|1|2),(EmptyCount|1|1),(BackgroundPss|1|2),(BackgroundCount|1|1),(ServicePss|1|2),(ServiceCount|1|1),(VisiblePss|1|2),(VisibleCount|1|1),(ForegroundPss|1|2),(ForegroundCount|1|1),(NoPssCount|1|1) 922807 watchdog_proc_stats (DeathsInOne|1|1),(DeathsInTwo|1|1),(DeathsInThree|1|1),(DeathsInFour|1|1),(DeathsInFive|1|1) 932808 watchdog_scheduled_reboot (Now|2|1),(Interval|1|3),(StartTime|1|3),(Window|1|3),(Skip|3) 942809 watchdog_meminfo (MemFree|1|2),(Buffers|1|2),(Cached|1|2),(Active|1|2),(Inactive|1|2),(AnonPages|1|2),(Mapped|1|2),(Slab|1|2),(SReclaimable|1|2),(SUnreclaim|1|2),(PageTables|1|2) 952810 watchdog_vmstat (runtime|2|3),(pgfree|1|1),(pgactivate|1|1),(pgdeactivate|1|1),(pgfault|1|1),(pgmajfault|1|1) 962811 watchdog_requested_reboot (NoWait|1|1),(ScheduleInterval|1|3),(RecheckInterval|1|3),(StartTime|1|3),(Window|1|3),(MinScreenOff|1|3),(MinNextAlarm|1|3) 97 98# --------------------------- 99# RescueParty.java 100# --------------------------- 1012900 rescue_note (uid|1),(count|1),(window|2) 1022901 rescue_level (level|1),(trigger_uid|1) 1032902 rescue_success (level|1) 1042903 rescue_failure (level|1),(msg|3) 105 106# --------------------------- 107# BackupManagerService.java 108# --------------------------- 1092820 backup_data_changed (Package|3) 1102821 backup_start (Transport|3) 1112822 backup_transport_failure (Package|3) 1122823 backup_agent_failure (Package|3),(Message|3) 1132824 backup_package (Package|3),(Size|1|2) 1142825 backup_success (Packages|1|1),(Time|1|3) 1152826 backup_reset (Transport|3) 1162827 backup_initialize 1172828 backup_requested (Total|1|1),(Key-Value|1|1),(Full|1|1) 1182829 backup_quota_exceeded (Package|3) 1192830 restore_start (Transport|3),(Source|2|5) 1202831 restore_transport_failure 1212832 restore_agent_failure (Package|3),(Message|3) 1222833 restore_package (Package|3),(Size|1|2) 1232834 restore_success (Packages|1|1),(Time|1|3) 124 1252840 full_backup_package (Package|3) 1262841 full_backup_agent_failure (Package|3),(Message|3) 1272842 full_backup_transport_failure 1282843 full_backup_success (Package|3) 1292844 full_restore_package (Package|3) 1302845 full_backup_quota_exceeded (Package|3) 1312846 full_backup_cancelled (Package|3),(Message|3) 132 1332850 backup_transport_lifecycle (Transport|3),(Bound|1|1) 134 135 136# --------------------------- 137# SystemServer.java 138# --------------------------- 139# SystemServer.run() starts: 1403010 boot_progress_system_run (time|2|3) 141 142 143# --------------------------- 144# PackageManagerService.java 145# --------------------------- 146# Package Manager starts: 1473060 boot_progress_pms_start (time|2|3) 148# Package Manager .apk scan starts: 1493070 boot_progress_pms_system_scan_start (time|2|3) 150# Package Manager .apk scan starts: 1513080 boot_progress_pms_data_scan_start (time|2|3) 152# Package Manager .apk scan ends: 1533090 boot_progress_pms_scan_end (time|2|3) 154# Package Manager ready: 1553100 boot_progress_pms_ready (time|2|3) 156# + check activity_launch_time for Home app 157# Value of “unknown sources” setting at app install time 1583110 unknown_sources_enabled (value|1) 159# Package Manager critical info 1603120 pm_critical_info (msg|3) 161# Disk usage stats for verifying quota correctness 1623121 pm_package_stats (manual_time|2|3),(quota_time|2|3),(manual_data|2|2),(quota_data|2|2),(manual_cache|2|2),(quota_cache|2|2) 163 164# --------------------------- 165# WindowManagerService.java 166# --------------------------- 167# Out of memory for surfaces. 16831000 wm_no_surface_memory (Window|3),(PID|1|5),(Operation|3) 169# Task created. 17031001 wm_task_created (TaskId|1|5),(StackId|1|5) 171# Task moved to top (1) or bottom (0). 17231002 wm_task_moved (TaskId|1|5),(ToTop|1),(Index|1) 173# Task removed with source explanation. 17431003 wm_task_removed (TaskId|1|5),(Reason|3) 175# Stack created. 17631004 wm_stack_created (StackId|1|5) 177# Home stack moved to top (1) or bottom (0). 17831005 wm_home_stack_moved (ToTop|1) 179# Stack removed. 18031006 wm_stack_removed (StackId|1|5) 181# bootanim finished: 18231007 wm_boot_animation_done (time|2|3) 183 184 185# --------------------------- 186# InputMethodManagerService.java 187# --------------------------- 188# Re-connecting to input method service because we haven’t received its interface 18932000 imf_force_reconnect_ime (IME|4),(Time Since Connect|2|3),(Showing|1|1) 190 191 192# --------------------------- 193# WallpaperManagerService.java 194# --------------------------- 19533000 wp_wallpaper_crashed (component|3) 196 197# --------------------------- 198# Device idle 199# --------------------------- 20034000 device_idle (state|1|5), (reason|3) 20134001 device_idle_step 20234002 device_idle_wake_from_idle (is_idle|1|5), (reason|3) 20334003 device_idle_on_start 20434004 device_idle_on_phase (what|3) 20534005 device_idle_on_complete 20634006 device_idle_off_start (reason|3) 20734007 device_idle_off_phase (what|3) 20834008 device_idle_off_complete 20934009 device_idle_light (state|1|5), (reason|3) 21034010 device_idle_light_step 211 212# --------------------------- 213# DisplayManagerService.java 214# --------------------------- 215# Auto-brightness adjustments by the user. 21635000 auto_brightness_adj (old_adj|5),(old_lux|5),(old_brightness|5),(old_gamma|5),(new_adj|5),(new_lux|5),(new_brightness|5),(new_gamma|5) 217 218# --------------------------- 219# ConnectivityService.java 220# --------------------------- 221# Connectivity state changed 22250020 connectivity_state_changed (type|1),(subtype|1),(state|1) 223 224 225# --------------------------- 226# NetworkStatsService.java 227# --------------------------- 22851100 netstats_mobile_sample (dev_rx_bytes|2|2),(dev_tx_bytes|2|2),(dev_rx_pkts|2|1),(dev_tx_pkts|2|1),(xt_rx_bytes|2|2),(xt_tx_bytes|2|2),(xt_rx_pkts|2|1),(xt_tx_pkts|2|1),(uid_rx_bytes|2|2),(uid_tx_bytes|2|2),(uid_rx_pkts|2|1),(uid_tx_pkts|2|1),(trusted_time|2|3) 22951101 netstats_wifi_sample (dev_rx_bytes|2|2),(dev_tx_bytes|2|2),(dev_rx_pkts|2|1),(dev_tx_pkts|2|1),(xt_rx_bytes|2|2),(xt_tx_bytes|2|2),(xt_rx_pkts|2|1),(xt_tx_pkts|2|1),(uid_rx_bytes|2|2),(uid_tx_bytes|2|2),(uid_rx_pkts|2|1),(uid_tx_pkts|2|1),(trusted_time|2|3) 230 231 232# --------------------------- 233# LockdownVpnTracker.java 234# --------------------------- 23551200 lockdown_vpn_connecting (egress_net|1) 23651201 lockdown_vpn_connected (egress_net|1) 23751202 lockdown_vpn_error (egress_net|1) 238 239# --------------------------- 240# ConfigUpdateInstallReceiver.java 241# --------------------------- 24251300 config_install_failed (dir|3) 243 244# --------------------------- 245# IntentFirewall.java 246# --------------------------- 24751400 ifw_intent_matched (Intent Type|1|5),(Component Name|3),(Caller Uid|1|5),(Caller Pkg Count|1|1),(Caller Pkgs|3),(Action|3),(MIME Type|3),(URI|3),(Flags|1|5) 248 249# --------------------------- 250# IdleMaintenanceService.java 251# --------------------------- 25251500 idle_maintenance_window_start (time|2|3), (lastUserActivity|2|3), (batteryLevel|1|6), (batteryCharging|1|5) 25351501 idle_maintenance_window_finish (time|2|3), (lastUserActivity|2|3), (batteryLevel|1|6), (batteryCharging|1|5) 254 255# --------------------------- 256# StorageManagerService.java 257# --------------------------- 2582755 fstrim_start (time|2|3) 2592756 fstrim_finish (time|2|3) 260 261# --------------------------- 262# AudioService.java 263# --------------------------- 26440000 volume_changed (stream|1), (prev_level|1), (level|1), (max_level|1), (caller|3) 26540001 stream_devices_changed (stream|1), (prev_devices|1), (devices|1) 266 267# --------------------------- 268# GestureLauncherService.java 269# --------------------------- 27040100 camera_gesture_triggered (gesture_on_time|2|3), (sensor1_on_time|2|3), (sensor2_on_time|2|3), (event_extra|1|1) 271 272# --------------------------- 273# timezone/RulesManagerService.java 274# --------------------------- 27551600 timezone_trigger_check (token|3) 27651610 timezone_request_install (token|3) 27751611 timezone_install_started (token|3) 27851612 timezone_install_complete (token|3), (result|1) 27951620 timezone_request_uninstall (token|3) 28051621 timezone_uninstall_started (token|3) 28151622 timezone_uninstall_complete (token|3), (result|1) 28251630 timezone_request_nothing (token|3) 28351631 timezone_nothing_complete (token|3)
3.4. EventLog完整语义分析 以am_proc_start分析log中的信息 30014 am_proc_start (User|1|5),(PID|1|5),(UID|1|5),(Process Name|3), (Type|3),(Component|3)
am_proc_start之后紧跟着的几个括号，其中括号里的内容如下： |data type[|data unit]) (<名字>|数据类型[|数据单位])
那么(User|1|5) ==> 名字为User, 数据类型为1，数据单位为5，下面再来看看数据类型和数据单位： 数据类型
1: int 2: long 3: string 4: list 数据单位 1: Number of objects(对象个数) 2: Number of bytes(字节数) 3: Number of milliseconds(毫秒) 4: Number of allocations(分配个数) 5: Id 6: Percent(百分比) am_proc_start: [0,2703,10011,com.google.android.onetimeinitializer, broadcast,com.google.android.onetimeinitializer/.OneTimeInitializerReceiver] 进程启动: UserId=0, pid=2703, uid=10011, ProcessName=com.google.android.onetimeinitializer, 数据类型=broadcast, 组件=com.google.android.onetimeinitializer/.OneTimeInitializerReceiver ————————————————
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