How to get information about android battery usage by application

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The project isn’t complete by any stretch of the imagination, but I created an application framework (kinda…that was the goal, it’s not there yet) to do just this. Check out http://syspower.googlecode.com. You won’t be able to get the percentage by application unless you calculate the usage for all applications but you can get quantitative values for power consumption. You can obviously then use those numbers to calculate a percentage. Also, you should note that the power consumption API is private and in order to access it, I had to use a number of reflective calls to access private and hidden data members. Given that, it may or may not work with all Android versions (I’ve tested it with 1.6-2.1). I basically had to reverse engineer the FuelGuage app from the open source repository.

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