问题
Is there anyway to get the battery usage info per application per second in API, adb shell, ...?
回答1:
Other than the battery usage screen in Settings, there is no API or command-line way to get this information.
回答2:
just try to read http://grepcode.com/file/repository.grepcode.com/java/ext/com.google.android/android-apps/1.6_r2/com/android/settings/fuelgauge/PowerUsageSummary.java/ , then you can get the info shown in the battery usage screen. the key class are IBatteryStats and BatteryStatsImpl.
来源：https://stackoverflow.com/questions/5149121/android-battery-usage-of-each-application