android detect amperage from charger

Question

I am trying to detect (if it is possible) the amperage coming from the charger/usb. is getting the intent extra - EXTRA_VOLTAGE will help me achieve that? sometimes the USB produces different amperage - 1000mA and sometimes less. How can I know the amperage?

Thanks!

Answer 1

Yes, ACTION_BATTERY_CHANGED is a sticky broadcast

this.registerReceiver(this.batReceiver,     
    new IntentFilter(Intent.ACTION_BATTERY_CHANGED));

private BroadcastReceiver batReceiver = new BroadcastReceiver(){

    @Override

    public void onReceive(Context arg0, Intent intent) {
    int voltage = intent.getIntExtra(BatteryManager.EXTRA_VOLTAGE, 0);

    int source = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0);     

    }    
  };

It seems you want the charger source use EXTRA_PLUGGED 0 for battery, 1 for AC and 2 for USB