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androidbatterybatterylevel

How to determine time since last charge

How can I determine programmatically the last time I charged my phone? What I'm looking for is something that in a TextView called time shows me:

Last time on charge: 3h ago

and of course if is charging will be

Last time on charge: 0h ago

or something like this. I think I have to register an AlarmManager but I'm nit sure. I just want to create this estimate nothing more. How can do it?

Solution

  • I don't think android straight away provides an API for the last-charge time.

    Alternatively, you could register for Broadcasts e.g. 

    ACTION_POWER_DISCONNECTED/ACTION_POWER_CONNECTED

    and save the time whenever the charger is disconnected and use that in your app.