【转】adb shell dumpsys

adb shell dumpsys

dumpsys是用来打印系统中指定服务的信息

Also you can apply filters to running services:

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

Some examples:

adb shell dumpsys wifi

adb shell dumpsys cpuinfo

 dump方法的重写：

       dumpsys的代码在mydroid/frameworks/base/cmds/dumpsys/dumpsys.cpp
    所有的dump信息都是由重载了Binder中的dump函数的类来完成：
        @Override
        protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
            ...
        }

      比如DiskStatsService，重写dump方法，利用 pw自带的pw.print("")函数，就能用dumpsys来进行shell打印了。

      public class DiskStatsService extands Binder

转自：http://quanminchaoren.iteye.com/category/130059