Getting Only stationary activityType from most recent TimelineItem

[avinashamanjha251]

Hi Matt,
I'm trying to fetch most recent "TimelineItem" and I'm getting it... but every time I'm getting activityType either stationary or nil. Please help me on this. Thanks in advance.

if let mostRecentItem = self.store.mostRecentItem {
printDebug("=========================================")
printDebug("item (mostRecentItem)")
printDebug("item modeMovingActivityType (String(describing: mostRecentItem.modeMovingActivityType))")
printDebug("item activityType (String(describing: mostRecentItem.activityType))")
printDebug("item modeActivityType (String(describing: mostRecentItem.modeActivityType))")
printDebug("item startDate (String(describing: mostRecentItem.startDate))")
printDebug("item endDate (String(describing: mostRecentItem.endDate))")
printDebug("item duration (mostRecentItem.duration)")
printDebug("item stepCount (String(describing: mostRecentItem.stepCount))")
}

[sobri909]

Hi @avinashamanjha251!

The first thing I'd check is whether samples are being classified at recording time. The item.activityType getter relies on either cached classifierResults or on the classifiedType of each sample within the item. So if you haven't explicitly touched item.classifierResults to trigger full classifier results for the item, then item.activityType won't do so either, and will fall back to modeMovingActivityType/ modeActivityType. Those two rely on the individual samples already having been classified, typically at time of recording.

As long as the TimelineRecorder was initialised with a classifier, eg let recorder = TimelineRecorder(store: store, classifier: UserTimelineClassifier.highlander), and the device has an internet connection and valid LocoKit API key, the recorder will be classifying each sample at recording time.

Though item.classifierResults also relies on the recorder having a valid classifier assigned, so that would be the second thing to check: whether you get sensible results by going direct to item.classifierResults.

It'd also be worth printing the sample.classifiedType of each sample within the item. eg for sample in path.samples { print("sample.classifiedType: \(sample.classifiedType)") }. The results of that should give better insight into what's going on with modeMovingActivityType / modeActivityType.

Let me know you get on!

[avinashamanjha251]

@sobri909 .. actually I'm not using classifier

lazy var recorder :TimelineRecorder = {
let recorder = TimelineRecorder(store: store)
return recorder
} ()

[sobri909]

Ah, without a classifier, samples and items won't have a activity types. That'll be the problem 😉