adb shell dumpsys用法

dumpsys用于打印系统信息

adb shell dumpsys打印所有service信息，可以加入以下filter

1 SurfaceFlinger
2 accessibility
3 account
4 activity
5 alarm
6 appwidget
7 audio
8 backup
9 battery
10 batteryinfo
11 bluetooth
12 bluetooth_a2dp
13 clipboard
14 connectivity
15 content
16 cpuinfo
17 device_policy
18 devicestoragemonitor
19 diskstats
20 dropbox
21 entropy
22 ethernet
23 hardware
24 input_method
25 iphonesubinfo
26 isms
27 keybar
28 location
29 media.audio_flinger
30 media.audio_policy
31 media.camera
32 media.player
33 meminfo
34 mount
35 netstat
36 network_management
37 notification
38 package
39 permission
40 phone
41 power
42 search
43 sensorservice
44 simphonebook
45 statusbar
46 telephony.registry
47 throttle
48 uimode
49 usagestats
50 vibrator
51 wallpaper
52 wifi
53 window

adb shell dumpsys power 打印关于power相关信息

可以使用管道命令

adb shell dumpsys | more

adb shell dumsys | grep "xxx"

dumpsys的代码在mydroid/frameworks/base/cmds/dumpsys/dumpsys.cpp