BP Display about carekit

[umerkhan-apple]

@md0u80c9 I think you are referring to the charts in the Health app. Unfortunately, that chart is not available for CareKit. One possible solution could be to use ORKDiscreteGraphChartView from ResearchKit. The approach would be to create a subclass of OCKChart and return ORKDiscreteGraphCartView for the chartView method override in your OCKChart subclass.

[akshay-yadav-apple]

Hey! @md0u80c9

Do you need any further assistance with this issue?

[md0u80c9]

Hi,

I haven't managed to progress wth this any further (been busy with the HL7 CDA submission). I still think it would be useful in CareKit - blood pressure is obviously a fairly major measure.

[dukemike]

@akshay-yadav-apple, I thought it would be as simple as subclassing OCKChart, and returning the ORK chart for chartView like I did in this gist, but I always get No Data. What am I doing wrong?

Thanks!

[akshay-yadav-apple]

Hey @dukemike
Try setting the height anchor on the chartView.

Could you also upload the screenshot of what you're seeing?

Thanks!

[ninoguba]

@akshay-yadav-apple if Apple or someone who's done it successfully already could provide us examples on how to achieve showing ResearchKit-based charts onto CareKit's Insights, this would be tremendously helpful to the community.

[damer]

I came across this issue too and noticed that "No Data" was coming from the ORKLineGraphChartView object and not something that the OCKInsightItem object was doing. (I could set the noDataText property on the ORKLineGraphChartView and it would show up in the Insights View Controller).

The solution that worked for me was to declare the LineGraphDataSource as an optional and instantiate it within the chartView function and then connect it to the OCKLineGraphChartView.datasource.

Im no expert at Swift/ObjC/Cocoa so I really cant say why @dukemike 's gist doesn't work -- seems to me that it should.

[dukemike]

@damer, did you implement copy? I have something along the lines of:

    override func copy(with zone: NSZone? = nil) -> Any {
        let chart: SampleORKChart = super.copy(with: zone) as! SampleORKChart
        // copy any class-specific attributes...
        return chart
   }

where SampleORKChart is my custom chart type.

[damer]

@dukemike - Yes I implemented copy similarly (it works correctly).

[kelseydedoshka-apple]

@md0u80c9, @dukemike, @ninoguba, @damer - apologies its been a while here. We love the idea of being able to use ResearchKit charts in CareKit. Unfortunately we don't have an existing solution that we can share with you at this time however it seems as though @damer and @dukemike may have implementations here that have worked for them. Would you both mind sharing some additional information here or even sharing some code for others to take a look at?

[dukemike]

This code works for me, using RK's PieChartDataSource (eg, copy it into your project or into OCKSample.) If you're using OCKSample to try this, you can change BuildInsightsOperation:createBackPainInsight to return MyChart() instead.

import UIKit
import CareKit
import ResearchKit

class MyChart: OCKChart {

    override func chartView() -> UIView {
        let chart = ORKPieChartView()
        let dataSource = PieChartDataSource()
        chart.dataSource = dataSource

        chart.heightAnchor.constraint(equalToConstant: 200).isActive = true
        return chart
    }
    
    override func copy(with zone: NSZone? = nil) -> Any {
        let chart: MyChart = super.copy(with: zone) as! MyChart
        return chart
    }
}

[kelseydedoshka-apple]

@dukemike - really appreciate the additional information and code snippet here!

[ninoguba]

Yes the examples from @djknowles on #117 and @dukemike helped me a lot. Would just be nice if the example was included in OCKSample so others can find it easier.

[kelseydedoshka-apple]

@ninoguba great to hear and good suggestion for the sample app!

[erik-apple]

We will continue tracking this request under the proposal for new chart type #285.