DeviceActivityMonitor startMonitoring error

Question

Created Jul ’21

Replies 2

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I created my Device Activity Monitor extension, and then attempted to start monitoring using the code example from the video:

let schedule = DeviceActivitySchedule(
    intervalStart: DateComponents(hour: 0, minute: 0),
    intervalEnd: DateComponents(hour: 23, minute: 59),
    repeats: true
)

let center = DeviceActivityCenter()

do {
     try center.startMonitoring(.daily, during: schedule)
} catch {
     print(error)
}

The startMonitoring call always fails for me with the same error:

[monitor] Failed to create UsageTrackingAgent proxy: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service on pid 0 named com.apple.UsageTrackingAgent was invalidated." UserInfo={NSDebugDescription=The connection to service on pid 0 named com.apple.UsageTrackingAgent was invalidated.}

Setting up the extension is a very manual process, so I likely missed a step somewhere, but any ideas on what this error might be indicating?

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Answer 1

jda-blue OP

Jul ’21

It looks like it's an issue with the extension not activating. I removed the extension target, which also removed the embedded .appex from my main app target, and I get the exact same result. It seems like it can't find the extension.

0

Answer 2

eternity1st OP

Jul ’21

How did you create the Device Activity Monitor extension? There is no such extension type in Xcode 13 beta 3.

0