How to see if Mac is charging in Swift

All I need is a simple bool: charging - true/false.

Do you mean:

• Is connected to an external power adapter?

• Is actively charging the battery?

These are different things. You can get the former with:

import IOKit.ps

let isPowerAdapterConnected = IOPSCopyExternalPowerAdapterDetails()?.takeRetainedValue() != nil

The latter is more complex. You can iterate through all the power sources looking at the

kIOPSIsChargingKey

guard let blob = IOPSCopyPowerSourcesInfo()?.takeRetainedValue() else {
    return
}
guard let sources = IOPSCopyPowerSourcesList(blob)?.takeRetainedValue() as [CFTypeRef]? else {
    return
}
for source in sources {
    guard let sourceInfo = IOPSGetPowerSourceDescription(blob, source)?.takeRetainedValue() as? [String:Any] else {
        continue
    }
    guard let isCharging = sourceInfo[kIOPSIsChargingKey] as? Bool else {
        continue
    }
    print(isCharging)
}

but you’ll need to handle various edge cases (Macs without a battery; Macs with an external battery, aka a UPS; and so on).

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