該命令用於打印出當前系統信息，默認打印出設備中所有service的信息，可以在命令後面加指定的service name.
有兩種方法可以查看service list:
- adb shell dumpsys
輸出信息的開始部分就是所有運行的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:
- adb shell service list
輸出結果如下：
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]
查詢到運行的system service後，就可以在dumpsys後面加上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（最後部分可以看到分辨率的信息）
有些service能夠接收額外的參數，我們可以使用-h查看幫助信息。
adb shell dumpsys package -h
adb shell dumpsys activity -h
本文轉載自：https://blog.csdn.net/g19920917/article/details/38032413#commentBox