Android提供的dumpsys工具可以用于查看感興趣的系統服務信息與狀態，手機連接電腦后可以直接命令行執行adb shell dumpsys 查看所有支持的Service但是這樣輸出的太多，可以通過dumpsys | grep "DUMP OF SERVICE" 僅顯示主要的Service的信息

一、列出dumpsys所有支持命令

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12	> adb shell?$ dumpsys |?grep "DUMP OF SERVICE"

以下是在三星S3手機上的輸出信息
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C:\Windows\System32>adb shell?shell@m:/ $ dumpsys |?grep "DUMP OF SERVICE"?dumpsys |?grep "DUMP OF SERVICE"?DUMP OF SERVICE AtCmdFwd:?DUMP OF SERVICE CustomFrequencyManagerService:?DUMP OF SERVICE DirEncryptService:?DUMP OF SERVICE Exynos.HWCService:?DUMP OF SERVICE Exynos.IPService:?DUMP OF SERVICE FMPlayer:?DUMP OF SERVICE LEDService:?DUMP OF SERVICE SecTVOutService:?DUMP OF SERVICE SurfaceFlinger:?DUMP OF SERVICE TvoutService_C:?DUMP OF SERVICE accessibility:?DUMP OF SERVICE account:?DUMP OF SERVICE activity:?DUMP OF SERVICE alarm:?DUMP OF SERVICE android.security.keystore:?DUMP OF SERVICE application_policy:?DUMP OF SERVICE appops:?DUMP OF SERVICE appwidget:?DUMP OF SERVICE audio:?DUMP OF SERVICE backup:?DUMP OF SERVICE battery:?DUMP OF SERVICE batteryinfo:?DUMP OF SERVICE bluetooth_manager:?DUMP OF SERVICE bluetooth_secure_mode_manager:?DUMP OF SERVICE clipboard:?DUMP OF SERVICE clipboardEx:?DUMP OF SERVICE commontime_management:?DUMP OF SERVICE connectivity:?DUMP OF SERVICE container_service:?DUMP OF SERVICE content:?DUMP OF SERVICE country_detector:?DUMP OF SERVICE cpuinfo:?DUMP OF SERVICE dbinfo:?DUMP OF SERVICE device_policy:?DUMP OF SERVICE devicestoragemonitor:?DUMP OF SERVICE diskstats:?DUMP OF SERVICE display:?DUMP OF SERVICE dreams:?DUMP OF SERVICE drm.drmManager:?DUMP OF SERVICE dropbox:?DUMP OF SERVICE edmnativehelper:?DUMP OF SERVICE enterprise_license_policy:?DUMP OF SERVICE enterprise_policy:?DUMP OF SERVICE entropy:?DUMP OF SERVICE gfxinfo:?DUMP OF SERVICE hardware:?DUMP OF SERVICE harmony_eas_service:?DUMP OF SERVICE input:?DUMP OF SERVICE input_method:?DUMP OF SERVICE iphonesubinfo:?DUMP OF SERVICE isms:?DUMP OF SERVICE license_log_service:?DUMP OF SERVICE location:?DUMP OF SERVICE lock_settings:?DUMP OF SERVICE log_manager_service:?DUMP OF SERVICE mdm.remotedesktop:?DUMP OF SERVICE media.audio_flinger:?DUMP OF SERVICE media.audio_policy:?DUMP OF SERVICE media.camera:?DUMP OF SERVICE media.player:?DUMP OF SERVICE meminfo:?DUMP OF SERVICE motion_recognition:?DUMP OF SERVICE?mount:?DUMP OF SERVICE multiwindow:?DUMP OF SERVICE netpolicy:?DUMP OF SERVICE netstats:?DUMP OF SERVICE network_management:?DUMP OF SERVICE nfc:?DUMP OF SERVICE nfccontroller:?DUMP OF SERVICE notification:?DUMP OF SERVICE package:?DUMP OF SERVICE permission:?DUMP OF SERVICE phone:?DUMP OF SERVICE phone_restriction_policy:?DUMP OF SERVICE phoneext:?DUMP OF SERVICE power:?DUMP OF SERVICE remoteinjection:?DUMP OF SERVICE samplingprofiler:?DUMP OF SERVICE samsung.smartfaceservice:?DUMP OF SERVICE scheduling_policy:?DUMP OF SERVICE search:?DUMP OF SERVICE sec_analytics:?DUMP OF SERVICE secontroller:?DUMP OF SERVICE sensorservice:?DUMP OF SERVICE serial:?DUMP OF SERVICE servicediscovery:?DUMP OF SERVICE simphonebook:?DUMP OF SERVICE sip:?DUMP OF SERVICE statusbar:?DUMP OF SERVICE telephony.registry:?DUMP OF SERVICE textservices:?DUMP OF SERVICE tvoutservice:?DUMP OF SERVICE uimode:?DUMP OF SERVICE updatelock:?DUMP OF SERVICE usagestats:?DUMP OF SERVICE usb:?DUMP OF SERVICE user:?DUMP OF SERVICE vibrator:?DUMP OF SERVICE voip:?DUMP OF SERVICE wallpaper:?DUMP OF SERVICE wfd:?DUMP OF SERVICE wifi:?DUMP OF SERVICE wifi_policy:?DUMP OF SERVICE wifip2p:?DUMP OF SERVICE window:

二、具體命令如何查看幫助

從上面可以看出Service非常多，“DUMP OF SERVICE”關鍵字后面的單詞都可以直接通過 dumpsys + 單詞 查看相關信息，具體每一個如何使用有一種通用的查看幫助的辦法。
查看每一個命令的使用幫助，以下以meminfo 為例演示：
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shell@m:/ $ dumpsys meminfo -h?dumpsys meminfo -h?meminfo dump options: [-a] [--oom] [process]???-a: include all available information?for each process.???--oom: only show processes organized by oom adj.?If [process] is specified it can be the name or?pid of a specific process to dump.

三、一些關鍵命令解釋

名字	功能
account?	顯示accounts信息
activity?	顯示所有的activities的信息
cpuinfo	顯示CPU信息
window	顯示鍵盤，窗口和它們的關系
wifi?	顯示wifi信息
batteryinfo $package_name	電量信息及CPU 使用時長
package packagename	獲取安裝包信息
usagestats	每個界面啟動的時間
statusbar	顯示狀態欄相關的信息
meminfo	內存信息（meminfo $package_name or $pid?使用程序的包名或者進程id顯示內存信息）
diskstats?	磁盤相關信息
battery?	電池信息
alarm	顯示Alarm信息
?	?

activity ?-?使用adb shell dumpsys檢測Android的Activity任務棧window -?通過adb shell dumpsys命令獲取當前應用的component
statusbar -?找出廣告通知屬于哪個應用

? ? dumpsys statusbar | grep notification=Notification?

也可以單獨列出某個系統服務的，比如battery，命令：dumpsys battery，如果想知道具體可以做哪些操作可：dumpsys battery -h來查看，比如我們想設置電量百分比，可以

dumpsys battery set level 5。

總結

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