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系统根据log类型，分为main,radio,events,system,crash
frameworks/base/core/java/android/util/Log.java //用于记录main log
frameworks/base/core/java/android/util/Slog.java //用于记录framework log
frameworks/base/telephony/java/android/telephony/Rlog.java //用于记录radio log
frameworks/base/core/java/com/android/internal/os/RuntimeInit.java //内部记录了crash log
adb logcat -b main
adb logcat -b radio
adb logcat -b system
EventLog 标签主要是存放在解释
1、frameworks/base/services/core/java/com/android/server/am/EventLogTags.logtags文件中
2、system/core/logcat/Event.logtags
# An activity is being finished: 1730001 am_finish_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3),(Reason|3) 18# A task is being brought to the front of the screen: 1930002 am_task_to_front (User|1|5),(Task|1|5) 20# An existing activity is being given a new intent: 2130003 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) 22# A new task is being created: 2330004 am_create_task (User|1|5),(Task ID|1|5) 24# A new activity is being created in an existing task: 2530005 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) 26# An activity has been resumed into the foreground but was not already running: 2730006 am_restart_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3) 28# An activity has been resumed and is now in the foreground: 2930007 am_resume_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3) 30# Application Not Responding 3130008 am_anr (User|1|5),(pid|1|5),(Package Name|3),(Flags|1|5),(reason|3) 32# Activity launch time 3330009 am_activity_launch_time (User|1|5),(Token|1|5),(Component Name|3),(time|2|3) 34# Application process bound to work 3530010 am_proc_bound (User|1|5),(PID|1|5),(Process Name|3) 36# Application process died 3730011 am_proc_died (User|1|5),(PID|1|5),(Process Name|3) 38# The Activity Manager failed to pause the given activity. 3930012 am_failed_to_pause (User|1|5),(Token|1|5),(Wanting to pause|3),(Currently pausing|3) 40# Attempting to pause the current activity 4130013 am_pause_activity (User|1|5),(Token|1|5),(Component Name|3) 42# Application process has been started 4330014 am_proc_start (User|1|5),(PID|1|5),(UID|1|5),(Process Name|3),(Type|3),(Component|3) 44# An application process has been marked as bad 4530015 am_proc_bad (User|1|5),(UID|1|5),(Process Name|3) 46# An application process that was bad is now marked as good 4730016 am_proc_good (User|1|5),(UID|1|5),(Process Name|3) 48# Reporting to applications that memory is low 4930017 am_low_memory (Num Processes|1|1) 50# An activity is being destroyed: 5130018 am_destroy_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3),(Reason|3) 52# An activity has been relaunched, resumed, and is now in the foreground: 5330019 am_relaunch_resume_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3) 54# An activity has been relaunched: 5530020 am_relaunch_activity (User|1|5),(Token|1|5),(Task ID|1|5),(Component Name|3) 56# The activity's onPause has been called. 5730021 am_on_paused_called (User|1|5),(Component Name|3) 58# The activity's onResume has been called. 5930022 am_on_resume_called (User|1|5),(Component Name|3) 60# Kill a process to reclaim memory. 6130023 am_kill (User|1|5),(PID|1|5),(Process Name|3),(OomAdj|1|5),(Reason|3) 62# Discard an undelivered serialized broadcast (timeout/ANR/crash) 6330024 am_broadcast_discard_filter (User|1|5),(Broadcast|1|5),(Action|3),(Receiver Number|1|1),(BroadcastFilter|1|5) 6430025 am_broadcast_discard_app (User|1|5),(Broadcast|1|5),(Action|3),(Receiver Number|1|1),(App|3) 65# A service is being created 6630030 am_create_service (User|1|5),(Service Record|1|5),(Name|3),(UID|1|5),(PID|1|5) 67# A service is being destroyed 6830031 am_destroy_service (User|1|5),(Service Record|1|5),(PID|1|5) 69# A process has crashed too many times, it is being cleared 7030032 am_process_crashed_too_much (User|1|5),(Name|3),(PID|1|5) 71# An unknown process is trying to attach to the activity manager 7230033 am_drop_process (PID|1|5) 73# A service has crashed too many times, it is being stopped 7430034 am_service_crashed_too_much (User|1|5),(Crash Count|1|1),(Component Name|3),(PID|1|5) 75# A service is going to be restarted after its process went away 7630035 am_schedule_service_restart (User|1|5),(Component Name|3),(Time|2|3) 77# A client was waiting for a content provider, but its process was lost 7830036 am_provider_lost_process (User|1|5),(Package Name|3),(UID|1|5),(Name|3) 79# The activity manager gave up on a new process taking too long to start 8030037 am_process_start_timeout (User|1|5),(PID|1|5),(UID|1|5),(Process Name|3) 81 82# Unhandled exception 8330039 am_crash (User|1|5),(PID|1|5),(Process Name|3),(Flags|1|5),(Exception|3),(Message|3),(File|3),(Line|1|5) 84# Log.wtf() called 8530040 am_wtf (User|1|5),(PID|1|5),(Process Name|3),(Flags|1|5),(Tag|3),(Message|3) 86 87# User switched 8830041 am_switch_user (id|1|5) 89 90# Activity fully drawn time 9130042 am_activity_fully_drawn_time (User|1|5),(Token|1|5),(Component Name|3),(time|2|3) 92 93# Activity focused 9430043 am_focused_activity (User|1|5),(Component Name|3) 95 96# Home Stack brought to front or rear 9730044 am_home_stack_moved (User|1|5),(To Front|1|5),(Top Stack Id|1|5),(Focused Stack Id|1|5),(Reason|3) 98 99# Running pre boot receiver 10030045 am_pre_boot (User|1|5),(Package|3) 101 102# Report collection of global memory state 10330046 am_meminfo (CachedKb|2|2),(FreeKb|2|2),(ZramKb|2|2),(KernelKb|2|2),(NativeKb|2|2) 104# Report collection of memory used by a process 10530047 am_pss (Pid|1|5),(UID|1|5),(Process Name|3),(PssKb|2|2),(UssKb|2|2) 106
152# Out of memory for surfaces. 15331000 wm_no_surface_memory (Window|3),(PID|1|5),(Operation|3) 154# Task created. 15531001 wm_task_created (TaskId|1|5),(StackId|1|5) 156# Task moved to top (1) or bottom (0). 15731002 wm_task_moved (TaskId|1|5),(ToTop|1),(Index|1) 158# Task removed with source explanation. 15931003 wm_task_removed (TaskId|1|5),(Reason|3) 160# Stack created. 16131004 wm_stack_created (StackId|1|5),(RelativeBoxId|1|5),(Position|1),(Weight|1|6) 162# Home stack moved to top (1) or bottom (0). 16331005 wm_home_stack_moved (ToTop|1) 164# Stack removed. 16531006 wm_stack_removed (StackId|1|5)
5# interaction logs 6524287 sysui_view_visibility (category|1|5),(visible|1|6) 7524288 sysui_action (category|1|5),(pkg|3) 8524290 sysui_count (name|3),(increment|1) 9524291 sysui_histogram (name|3),(bucket|1)