adb shell dumpsys的使用

该命令用于打印出当前系统信息，默认打印出设备中所有service的信息，可以在命令后面加指定的service name.

有两种方法可以查看service list:

1. adb shell dumpsys

输出信息的开始部分就是所有运行的service，如下：

Currently running services:

SurfaceFlinger:

accessibility:

account:

activity:

alarm:

appwidget:

audio:

backup:

battery:

batteryinfo:

clipboard:

connectivity:

content:

cpuinfo:

device_policy:

devicestoragemonitor:

diskstats:

dropbox:

entropy:

hardware:

input_method:

iphonesubinfo:

isms:

location:

media.audio_flinger:

media.audio_policy:

media.camera:

media.player:

meminfo:

mount:

netstat:

network_management:

notification:

package:

permission:

phone:

power:

search:

sensorservice:

simphonebook:

statusbar:

telephony.registry:

throttle:

uimode:

usagestats:

vibrator:

wallpaper:

wifi:

window:

2. adb shell service list

输出结果如下：

Found 49 services:

0 phone: [com.android.internal.telephony.ITelephony]

1 iphonesubinfo: [com.android.internal.telephony.IPhoneSubInfo]

2 simphonebook: [com.android.internal.telephony.IIccPhoneBook]

3 isms: [com.android.internal.telephony.ISms]

4 diskstats: []

5 appwidget: [com.android.internal.appwidget.IAppWidgetService]

6 backup: [android.app.backup.IBackupManager]

7 uimode: [android.app.IUiModeManager]

8 audio: [android.media.IAudioService]

9 wallpaper: [android.app.IWallpaperManager]

10 dropbox: [com.android.internal.os.IDropBoxManagerService]

11 search: [android.app.ISearchManager]

12 location: [android.location.ILocationManager]

13 devicestoragemonitor: []

14 notification: [android.app.INotificationManager]

15 mount: [IMountService]

16 accessibility: [android.view.accessibility.IAccessibilityManager]

17 throttle: [android.net.IThrottleManager]

18 connectivity: [android.net.IConnectivityManager]

19 wifi: [android.net.wifi.IWifiManager]

20 network_management: [android.os.INetworkManagementService]

21 netstat: [android.os.INetStatService]

22 input_method: [com.android.internal.view.IInputMethodManager]

23 clipboard: [android.text.IClipboard]

24 statusbar: [com.android.internal.statusbar.IStatusBarService]

25 device_policy: [android.app.admin.IDevicePolicyManager]

26 window: [android.view.IWindowManager]

27 alarm: [android.app.IAlarmManager]

28 vibrator: [android.os.IVibratorService]

29 hardware: [android.os.IHardwareService]

30 battery: []

31 content: [android.content.IContentService]

32 account: [android.accounts.IAccountManager]

33 permission: [android.os.IPermissionController]

34 cpuinfo: []

35 meminfo: []

36 activity: [android.app.IActivityManager]

37 package: [android.content.pm.IPackageManager]

38 telephony.registry: [com.android.internal.telephony.ITelephonyRegistry]

39 usagestats: [com.android.internal.app.IUsageStats]

40 batteryinfo: [com.android.internal.app.IBatteryStats]

41 power: [android.os.IPowerManager]

42 entropy: []

43 sensorservice: [android.gui.SensorServer]

44 SurfaceFlinger: [android.ui.ISurfaceComposer]

45 media.audio_policy: [android.media.IAudioPolicyService]

46 media.camera: [android.hardware.ICameraService]

47 media.player: [android.media.IMediaPlayerService]

48 media.audio_flinger: [android.media.IAudioFlinger]

查询到运行的system service后，就可以在dumpsys后面加上service的名字，查看指定的service信息。

adb shell dumpsys activity

adb shell dumpsys cpuinfo

adb shell dumpsys battery

adb shell dumpsys window（最后部分可以看到分辨率的信息）

有些service能够接收额外的参数，我们可以使用-h查看帮助信息。

adb shell dumpsys package -h

adb shell dumpsys activity -h