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Tools do not show energy use: it is empty

I followed Apple's steps to get the level of use of my application from my device using Energy Diagnostics tools (https://developer.apple.com/library/ios/#documentation/DeveloperTools/Conceptual/InstrumentsUserGuide/Built-InInstruments/Built- InInstruments.html # // apple_ref / DOC / UID / TP40004652-CH6-SW63).

I tried to use my application and several applications from the AppStore, and I always get all the information expected (including time flags), except for information about energy usage. It’s just that the power consumption panel does not show a graph (it shows the operating time), and the energy consumption table (detailed view) is always empty.

I am using iPodTouch4 and Xcode 4.2. What could be the problem? Do I need to do anything other than Apple steps?

Thanks in advance.

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3 answers

I am very new to iOS Energy Diagnostics, so I could be wrong here ...

The only time I got empty power consumption is when the device is plugged in. Unplug the device and start it for a while, then connect it to the tools and reimport to your logs.

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I found that Energy Diagnostics has lackluster accuracy, which is why my company made Powergremlin , which is simple but much more accurate in our tests. It is open source, so just download and create it in Xcode.

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You need to make the snap track look like it matches your energy consumption. Then go to where the flag is on the battery, and you will use the energy using the statistics screen.

Now I am also new to this and therefore do not understand how to interpret the data. If anyone could clarify that the answer would be better :)

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